Tunica media is the layer of blood vessels responsible for vasodilation and vasoconstriction as a result of sympathetic activation.
What effect does tunica media have on blood pressure?
The cardiovascular system includes tubular organs called blood vessels that move blood across the body. The organ that provides the pressure required to force the blood through the vessels is the heart. In contrast to veins, which carry blood back to the heart, arteries carry blood away from the heart. The vascular wall of arteries and veins has three layers. The innermost layer of the tunic is called the tunica intima, followed by the middle layer, the tunica media, and the outer layer, the tunica adventitia.
Smooth muscle and elastic connective tissue make up the tunica media. When it comes to the upkeep of blood pressure, this layer is the most important of the three. As blood is forced out of the heart, the elastic fibers in this layer can withstand the strain applied to the blood artery. The elastic fibers apply the force back onto the blood when the heart relaxes, keeping blood pressure and flow during diastole.
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What is the most common explanation for circadian rhythm dysregulation in modern society?
Answer choices:
We live in a society
Blue light from device screens
CLOCK gene mutations from plastics
The sun
The most common explanation for dysregulation of circadian rhythm in modern society is blue light from device screens
Blue light from device screensWhat happens if the circadian rhythm is dysregulated?The most frequent symptoms are insomnia and drowsiness, decreased vitality and performance, which may increase the risk of accidents at work, increased rate of breast, colorectal and prostate cancer, increased blood pressure, increased gastrointestinal disorders and problems reproductive.
What are the effects caused by blue light?Using electronics that emit blue light for more than 6 hours a day can cause headaches, eye strain and premature retinal aging. There are two types of blue light: turquoise and violet.
With this information, we can conclude that Circadian rhythms are physical, mental, and behavioral changes that follow a 24-hour cycle.
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Describe how ADH affects the kidney tubules to bring about the relationship
The Antidiuretic hormone ( ADH ) affects the kidney tubules tp bring about the reabsorption of water in the glomerular filtrate.
Thus, the Antidiuretic hormone ( ADH ) also play a vital role in the kidney in homeostasis
What is homeostasis?Homeostasis can simply be defined as the steady maintenance of the internal environment of an organism. Living organisms usually find a way to balance any low or high concentration of substances in the internal environment
Below are what makes up the internal environment of an organism:
BloodLymphIntercellular fluidsSo therefore, cell structures involved releases glucagon to raises the blood glucose levels when the glucose levels in the blood is low
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What three key observations allowed darwin to deduce that natural selection is a primary driver of evolution?
What three key observations allowed darwin to deduce that natural selection is a primary driver of evolution?
Populations of organisms vary, more offspring are produced than can survive, and the relative frequency of favourable mutations rises with time.
What is natural selection?Natural selection is the variation in individual survival and procreation brought on by phenotypic variances. The evolution of a population's heritable features across generations is a fundamental mechanism of evolution. By contrasting it with artificial selection, which in his opinion is intentional and natural selection is not, Charles Darwin popularized the phrase "natural ."
Every population of organisms contains variation. This happens in part because an organism's genome might experience random mutations, which its descendants may inherit. Individuals' genetics and environments interact throughout their lifetimes to produce different phenotypes.
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Which hormone released by the highlighted structure inhibits the secretion of fsh only inhibin?
Inhibin hormone released by the highlighted structure inhibits the secretion of FSH only.
What is inhibin hormone?A protein called inhibin is secreted by the granulosa cells in women and the Sertoli cells in men. It decreases the amount of LH-releasing hormone in the hypothalamus and prevents the pituitary gland from producing and releasing follicle-stimulating hormone.Inhibin is a factor in the feedback control of FSH secretion in both males and females going through puberty. Follistatin suppresses FSH-subunit expression like inhibin, whereas activin enhances it, which in turn influences FSH production and secretion.Inhibin A is secreted by the corpora lutea and dominant ovarian follicles in women, which helps to explain why levels are so high during the late follicular and luteal stages. During the late luteal and early follicular phases of the menstrual cycle, inhibin B is reciprocally raised.Learn more about inhibin here:
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Question: Which hormone released by the highlighted structure inhibits the secretion of FSH only?
Researchers isolated peptidoglycan from a eukaryotic cell. The best explanation for this would be that?
Studies have shown that the peptidoglycan in eukaryotes is essential for their cell division and tumor cell formation.
Commonly, peptidoglycan (PG) is the component of the cell wall of prokaryotes, especially bacteria.
Recent discovery of endogenous synthesis of peptidoglycan in eukaryotes stated that the amount of PG difference between animals and bacteria becomes quantitative and no longer qualitative.
Some propose that bacterial surface components, whose synthesis is encoded in genes inherited by the eukaryotes from the ancestors of the organelles, may play a role in inter and intracellular communication.
This is the reason that PG synthesis can be correlated to two of the most fundamental processes in higher organisms, i.e. cell division, Aging and tumor formation.
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What is a religious custom
When a custom contains a religious component and includes the communal expression of religious life outside of the Church's formal liturgy, it is referred to as a religious custom.
A custom is an action that is typically repeated in the same way on related occasions and is influenced by local tradition.
When it contains religious meaning and includes the community expression of religious life outside of the Church's formal liturgy, it is referred to as a religious custom.
It demonstrates how the objective salvific event permeates peoples' subjective experiences in various ways according to their age, country, and region.
Subjective piety is produced by those who have mystical religious tendencies.
Sermons, remembering a god or gods' deeds, sacrifices, festivals, feasts, trance, rituals, liturgies, ceremonies, worship, initiations, funerals, marriages, mediation, invocation, mediumship, music, art, dance, community service, or other aspects of human culture can all be included in a religion's practice.
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Ethical dilemmas raised by dna technology and knowledge of the human genome include?
Ethical dilemmas raised by DNA technology and knowledge of the human genome include the potential for interfering in evolution, the safety of GM foods and the potential discrimination against people predisposed to certain diseases.
What about DNA?Recombinant DNA technology raises safety concerns such as "gene pollution" of the environment leading to "superweeds" and antibiotic-resistant microorganisms. Health impacts of GMO-containing food. Effectiveness of medicinal substances created using DNA technology, allergenicity, and adverse immunological reactions.Basic human mistake and bias, accusing the innocent of crimes, privacy rights, and an increase in racial inequities are some of these problems. Researchers Itiel Dror and Greg Hampikian discovered in their widely cited study from 2011 that forensic professionals and lab technicians had quite different perspectives on how to analyze DNA.Germline genome editing raises a number of bioethical concerns, including the possibility of unintended modifications to the genome, who should provide informed consent, how to do so, and the breeding of the human species (eugenics).Learn more about DNA here:
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Question: Ethical dilemmas raised by DNA technology and knowledge of the human genome include ______.
A. the potential for interfering in evolution
B. the safety of GM foods
C. the potential discrimination against people predisposed to certain diseases
D. all of the above
Features that result from wave deposition include
Select one:
a.
groins
b.
barrier islands
c.
sea walls
d.
sea stacks
Answer:
b.barrier islands
Explanation:
What organism began to grow in large numbers in lake washington as a result of the relaase of effluent from sewage treatment plans?
Cyanobacteria (blue-green algae) began to grow in large numbers in lake Washington as a result of the release of effluent from sewage treatment plans. Human activities have a big impact on water quality, but other, more subtle biological processes are also quite important.
An intriguing illustration of how anthropogenic factors and biological processes can change water quality is Lake Washington. The late Dr. W.T. Edmondson, spent many years researching the biology and chemistry of Lake Washington.Between 1941 and 1963, the lake received growing amounts of secondary processed sewage, which led to eutrophication and a decrease in the lake's water quality. From 1955 to 1973, cyanobacteria dominated the planktonic algae community.
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Good sources of riboflavin include:______
a) milk, meats, and green vegetables.
b) refined grains and pork.
c) citrus fruits and berries.
d) potatoes, carrots, and bananas.
Good sources of riboflavin includes is milk , meats, and green vegetables.Riboflavin is a dietary supplement which is also called as vitamin B2, found in food.
It is essential for proper development of the skin, lining of digestive tract, blood cells, and brain function. Its involved in many function in human body. Riboflavin used to prevent deficiency for migraine and high levels of homo-cysteine in the blood.
Deficiency Riboflavin caused fatigue, swollen,throat,blurred vision, and depression. It can be affect skin which caused skin crack , itching and around the mouth dermatitis.Vitamin B2 helps human body to build red blood cells and supportive functions which gives energy.
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What characteristic of b. anthracis allows the bacterium to survive without water or nutrition?
Bacillus anthracis can survive in the absence of adequate nutrition due to its capacity to produce spores, which makes it dormant and non-motile.
Describe is the biology of Bacillus anthracis?The bacterium B. anthracis is a Gram-positive, rod-shaped, facultatively anaerobic, sporulating, and capsuled organism. It has a width of 1-1.2 m and a length of 3-5 m. It appears as a chain-like structure under a microscope. Despite being an aerobic organism, B. anthracis has the ability to sporulate, which allows it to exist in anaerobic conditions. In fact, it can persist as spores for a number of years in water, air, and soil. Spores are immune to the hostile environment and unaffected by high temperatures, pressure, chemicals, UV rays, and a lack of nutrients.Learn more about Bacillus antharcis here:
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Which process is used to remove bacteria, necrotic tissue, and organic debris from the root canal?
Debridement is the process used to remove bacteria, necrotic tissue, and organic debris from the root canal; option C.
What is the role of a dentist in tooth and gum care?A dentist is a professional who specializes in the care of the tooth and the gum.
Dentists are important healthcare professionals as they can perform several forms of surgeries to bring relief to patients with several dental issues.
Several branches of dentistry exists, one of which is endodontics.
Endodontics is the branch of dentistry that is concerned with the dental pulp and tissues surrounding the roots of a tooth.
One of the processes employed in endodontics is debridement.
Debridement involves the surgical removal of bacteria, necrotic tissue, and organic debris from the root canal.
In conclusion, dentists are concerned with dental health of individuals.
Endodontists are dentists who treat issues of the dental pulp and tissues surrounding the roots of a tooth.
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The complete question is:
Which process is used to remove bacteria, necrotic tissue, and organic debris from the root canal?
A. Obturation
B. Opening the canal
C. Debridement
D. Shaping
5. What does basal metabolic rate mean?
A. You do not exercise and have a low muscle to fat ratio
B. Slow chemical reactions in the cells.
C. You body does not burn calories.
D. The rate the body uses energy when at rest.
According to the research, the correct option is D. Basal metabolic rate is the rate the body uses energy when at rest.
What is basal metabolic rate?It is a rate that indicates the minimum amount of energy (quantity of calories) in the resting state that the body needs for the correct functioning of the organism these vital functions include those that do not stop consciously, such as cardiovascular activity , respiratory, others.
In other words, it is a parameter that is used to estimate the basic energy expenditure for the body to cover its vital metabolic functions as breathing even if it is completely at rest under conditions of thermoneutrality.
Therefore, we can conclude that according to the research, the correct option is D. Basal metabolic rate is the rate the body uses energy when at rest.
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Which type of selection acts to eliminate individuals which are intermediate on a phenotypic range?
Disruptive selection acts to eliminate individuals which are intermediate on a phenotypic range.
What is disruptive selection?Extreme values of a trait are preferred above intermediate values in population genetic alterations known as disruptive selection, also known as diversifying selection. In this situation, the trait's variation rises and the population is split into two clearly defined groups.A population that has two extreme variants of a trait as the dominant phenotype is the result of disruptive selection. For instance, disruptive selection would be in play if both short and tall species, but not medium-sized organisms, were favored.A type of natural selection in which traits with extreme values are preferred over those with moderate values.A type of natural selection known as stabilizing selection is one in which genetic diversity declines as the population stabilizes on a particular trait value.Natural selection that discriminates against the typical person in a population is known as disruptive selection. This kind of population would consist primarily of phenotypes (individuals having sets of features) at either extreme and very few individuals in the middle.Learn more about disruptive selection here:
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When a shockable rhythm is present during cardiac arrest and a biphasic manual defibrillator is available, the initial energy level selected should be:________
When shockable rhythm is present during cardiac arrest and biphasic manual defibrillator is available, the initial energy selected should be between 120 - 200J
If a person goes into cardiac arrest immediately start CPR and also provide oxygen and connect a defibrillator if available. Continue CPR for 5 cycles and check for shockable rhythm.
If a shockable rhythm is observed, use the biphasic manual defibrillator for the initial shock at 120 - 200 J based on the device. Then check for a pulse. If a pulse is present, begin the post resuscitation care.
If there is no pulse or asystolic, then start the CPR cycle again until the shockable rhythm is observed. Then shock at 200J using a biphasic manual defibrillator.
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The type of growth that a population may show when food and habitat are limitless is called?
A type of growth that a population may show when food and habitat are limitless is exponential population growth.
What is exponential population growth?The case in which resources are limitless a population can experience exponential population growth where the size increases at a greater rate.
Exponential growth occurs when there is large quantity of resources are present and few individuals are there to utilize it
When number of individuals increases the resources will depleted and growth rate will slow down.
Therefore, exponential population growth is the type of growth in which resources are plenty in comparison of population.
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How is most of the motor activity in the somatic nervous system coordinated? a. voluntarily b. consciously c. reflexively d. subconsciously e. sequentially
Answer:
D. Subconsciously
Explanation:
What might happen if a substance that is not a substrate molecule binds to an enzyme's active site?
If a substance which is not a substrate happens to bind to the active site of an enzyme, it will result in the reduction of the activity of the enzyme.
For an enzyme to catalyze a reaction, a substrate has to come and bind to the active site which is present on the enzyme. As the substrates binds, some modifications occur resulting in a change of shape of the active site and results in the grasping of the substrate more tightly and thereby catalyzing the reaction.
If a substance which is not a substrate comes and takes the place of the substrate on the active site, the rate of the reaction will slow down as the active site will now not be able to bind to the target molecule.
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What are the chemical changes that occur in your blood that will potentially stimulate an increase in ventilation during and shortly after exercise?
More CO2 and H+ is generated, enhancing oxygen unloading in the muscles in the process.
When you exercise and your muscles work harder, your body uses more oxygen and produces more carbon dioxide. To cope with this extra demand, your breathing has to increase from about 15 times a minute when you are resting, up to about 40–60 times a minute during exercise.
The gas exchange requirements of the lung increase due to an increased oxygen consumption and increased carbon dioxide production. In addition, both the respiratory rate and tidal volume increase, hence alveolar ventilation also increases. This increases the rate of gas exchange and minute volume.
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What was the name of a wealthy Saudi who quickly rose to leadership
within the mujahideen?
The scientist whose work provided the foundation for later understandings of genetics was:____.
a. john ray.
b. charles darwin.
c. gregor mendel.
d. robert hooke.
The scientist whose work provided the foundation for later understandings of genetics was Gregor Mendel (option c).
Who was Gregor Mendel?Gregor Mendel was an Hungarian scientist who worked by making genetic crosses in pea plants and thus discovered two fundamental laws in genetics.
Mendel laws include the principle of independent segregation between alleles (genetic factors) and dominance of one allele on another, which are known as dominant allele and recessive allele, respectively.
In conclusion, the scientist whose work provided the foundation for later understandings of genetics field was Gregor Mendel (option c).
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The muscle that aids in drawing the head back and elevating the shoulder blades is known as the?
The muscle that aids in drawing the head back and elevating the shoulder blades is known as the trapezius.
Trapezius Muscle:
The trapezius is a large muscle in your back. It forms a trapezoid shape at the back of your head and neck, continues across your shoulders, and to the center of your back.
The trapezius muscles also referred to as the "traps," are crucial for good posture. They protect the neck and spine, shift the shoulders, and lift the arms out to the sides. When you shrug or draw your shoulders back, we employ them.
Trapezius issues are uncommon but can happen. Any lesion to the cranial nerve XI, the spinal accessory nerve, can weaken or paralyze the trapezius muscle. Trapezius muscle tension occurs when the trapezius muscle is overextended. The muscle may rip under some circumstances.
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An abnormal accumulation of fluid in the intercellular spaces of the body that is localized or diffused is referred to as ___________.
An abnormal accumulation of fluid in the intercellular spaces of the body that is localized or diffused is referred to as Edema.
The medical term for swelling brought on by fluid becoming trapped in your body's tissues is edema. Edema can affect your face, hands, abdomen, and legs, but it most frequently affects your feet, ankles, and legs. Edema will make some body parts enlarge (swell), which can make it difficult for you to carry out your usual activities.
If you were sitting or standing for a long time, elevating the swollen area of your body or moving about will assist reduce swelling and make you feel better. Edema grading is a measure that's used to gauge how serious of an edoema diagnosis you have and how much fluid has accumulated in your tissues.
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Which organelle modifies the contents within vesicles and then repackages them for export?
Golgi apparatus is the organelle which modifies the contents within vesicles and then repackages them for export.
The structure of the Golgi apparatus or Golgi complex is flattened, layered, sac-like organelle that looks like a stack of pancakes. It helps to move materials, which are proteins and other molecules, from one part of a cell to another.
Although it intercepts ER vesicles, modify the content for export, and repackage the material in a Golgi vesicle, which can be fuse with plasma membrane. This apparatus even receives proteins and lipids from the rough endoplasmic reticulum. It is because, it helps in transporting protein within or outside the cell.
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Based on your understanding of fruit fly phenotypes, which tobacco plant phenotype would be considered the wild type phenotype?
Based on the understanding of fruit fly phenotypes, the wild type phenotype of tobacco plant shows following characteristics:-
The stem is thick and not much branched.The leaves of the plant are lanceolate, tapering on both the ends, yellowish-green above and paler beneath.The plant has sticky hair on all of its parts.And the flowers are lavender-blue with yellow stamens, in compact clusters at ends of branches.A wild type phenotype is the one that predominates in a natural population of organisms in contrast to that of laboratory mutant forms. For example-the physical appearance of wild type flies includes red eyes, yellow-brown body color, as well as transverse black rings across their abdomen.
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What gas is required for optimum production of adenosine triphosphate (atp)?
a. argon
b. carbon dioxide
c. nitrous oxide
d. oxygen
In the stomach, _______ participate in the chemical digestion of protein. gastric lipase and intrinsic factor hydrochloric acid and pepsin mucus and cholecystokinin all of the above
How many different genes are coordinately regulated by the gal4 transcriptional activator?.
Answer:
Four
(For the extra words limit)
The psychoanalytic theory purports that gender typing occurs: _____
a) before birth.
b) because of biology.
c) unconsciously.
d) in response to rewards and punishment of imitation behavior
Answer:
C
Explanation:
The correct answer is C. unconsciously.
One advantage of branched sugar polymers is the availability of more ends for chemical reaction.
a. true
b. false
The one advantage of branched sugar polymers is the availability of more ends for chemical reactions. So, the statement is true.
What are branched sugar polymers?Polysaccharides are simply the monomers of thousands of monosaccharides units. The kind of polysaccharide formed will be based on the kind of monosaccharide units involved.
The branching of monomers helps in the formation of polysaccharides. Branching of glucose monomers in the formation of different polysaccharides. These are starch and cellulose present in plants and glycogen in animals.
These kinds of polysaccharides are made of a lot of monomers and that is caused by the branching. This kind of branching can also help in the addition of more monomeric units to make a longer polysaccharide chain.
Therefore, an advantage of branched sugar polymers is the availability of more ends for chemical reactions.
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