Question 1

By using the answer code (options may be used more than once or not at all), indicate whether the following would
-increased vasomotor centre activity

Accepted Answer

Increased vasomotor centre activity would cause constriction of blood vessels, which would increase blood pressure.

Question 2

By using the answer code (options may be used more than once or not at all), indicate whether the following would
-adrenalin release

Accepted Answer

The answer of By using the answer code (options may...

Question 3

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all):
-parasympathetic discharge on skeletal muscle arterioles

Accepted Answer

Parasympathetic discharge does not affect arteriolar calibre in skeletal muscle arterioles.

Question 4

By using the answer code (options may be used more than once or not at all), indicate whether the following would
-facultative Na⁺ reabsorption

Accepted Answer

Facultative Na⁺ reabsorption refers to the selective reabsorption of Na⁺ ions in the distal tubules of nephrons in response to aldosterone. This leads to an increase in the total blood volume and ultimately increases blood pressure.

Question 5

By using the answer code (options may be used more than once or not at all), indicate whether the following would
-baroreceptors inhibited

Accepted Answer

CBaroreceptors are sensors located in blood vessels that help regulate blood pressure by sending signals to the brain to either increase or decrease heart rate and blood vessel dilation. When baroreceptors are inhibited, they cannot properly sense blood pressure changes, leading to a potential increase in blood pressure (A) because the body may not compensate for high blood pressure by dilating vessels or slowing heart rate. Additionally, inhibition can lead to an increase in heart rate (C) as the body attempts to maintain adequate blood pressure without the proper feedback from baroreceptors.

Question 6

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all):
-decreased O₂ in skeletal muscle

Accepted Answer

Decreased O₂ in skeletal muscle would produce arteriolar vasodilation in order to increase perfusion and oxygen delivery to the tissue. This is known as the "active hyperemia" response.

Question 7

By using the answer code (options may be used more than once or not at all), indicate whether the following would
-increased release of vasopressin

Accepted Answer

Vasopressin is a hormone that causes vasoconstriction, or narrowing of blood vessels, which leads to an increase in blood pressure. Therefore, increased release of vasopressin would result in an increase in blood pressure. It would not have any direct effect on heart rate.

Question 8

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all):
-increased stretch of arterioles supplying a particular tissue

Accepted Answer

Increased stretch of arterioles supplying a particular tissue would activate the myogenic mechanism, leading to arteriolar vasoconstriction to maintain constant perfusion pressure and protect against excessive stretch.

Question 9

Describe how blood pressure is regulated.

Accepted Answer

The answer of Describe how blood pressure is regulated....

Question 10

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all):
-occlusion of an artery supplying a particular tissue

Accepted Answer

Occlusion of an artery supplying a particular tissue would lead to a decrease in oxygen and nutrient supply to that tissue. In response, the affected tissue would release various metabolites and factors (such as adenosine, carbon dioxide, hydrogen ions, and potassium ions) that cause arteriolar vasodilation in an attempt to increase blood flow and compensate for the reduced supply. This vasodilation is a part of the autoregulatory mechanism of blood flow, aiming to maintain tissue perfusion under varying conditions.

Question 11

By using the answer code (options may be used more than once or not at all), indicate whether the following would
-increased release of aldosterone

Accepted Answer

An increase in aldosterone leads to an increase in sodium retention, which increases blood volume and therefore increases blood pressure.

Question 12

By using the answer code (options may be used more than once or not at all), indicate whether the following would
-chemoreceptors activated

Accepted Answer

The answer of By using the answer code (options may...

Question 13

Describe capillary filtration and reabsorption.

Accepted Answer

The answer of Describe capillary filtration and reabsorption....

Question 14

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all):
-application of ice to a sprained ankle

Accepted Answer

Application of ice to a sprained ankle would produce arteriolar vasoconstriction. This is because cold temperature causes constriction of blood vessels in order to decrease blood flow and limit swelling.

Question 15

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all):
-histamine release in an injured tissue

Accepted Answer

Histamine release in an injured tissue would produce arteriolar vasodilation. Histamine is a potent vasodilator and is released in response to tissue injury or inflammation. The dilation of arterioles in the area of injury allows for increased blood flow to the tissue, which promotes healing and helps to remove waste products.

Question 16

By using the answer code (options may be used more than once or not at all), indicate whether the following would
-stress

Accepted Answer

The answer of By using the answer code (options may...

Question 17

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all):
-norepinephrine on cerebral arterioles

Accepted Answer

The answer of Indicate whether arteriolar vasoconstriction or vasodilation would...

Question 18

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all):
-sympathetic stimulation of kidney arterioles

Accepted Answer

Sympathetic stimulation causes vasoconstriction in most arterioles, including the kidney arterioles, which would reduce blood flow to the kidney.

Question 19

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all):
-a hyperemic response in the heart

Accepted Answer

During a hyperemic response in the heart, there is an increase in metabolic demand and blood flow. This would lead to arteriolar vasodilation to increase the blood supply to the tissue.

Question 20

By using the answer code (options may be used more than once or not at all), indicate whether the following would
-release of renin

Accepted Answer

Renin is an enzyme produced and released by the kidneys in response to low blood pressure. Its main function is to activate the renin-angiotensin-aldosterone system, ultimately resulting in an increase in blood volume and vasoconstriction, leading to an increase in blood pressure. Therefore, release of renin would increase blood pressure. It does not have a direct effect on heart rate.

Quiz 8: Vascular Physiology

By using the answer code (options may be used more than once or not at all) , indicate whether the following would -increased vasomotor centre activity

By using the answer code (options may be used more than once or not at all) , indicate whether the following would -adrenalin release

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all) : -parasympathetic discharge on skeletal muscle arterioles

By using the answer code (options may be used more than once or not at all) , indicate whether the following would -facultative Na⁺ reabsorption

By using the answer code (options may be used more than once or not at all) , indicate whether the following would -baroreceptors inhibited

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all) : -decreased O₂ in skeletal muscle

By using the answer code (options may be used more than once or not at all) , indicate whether the following would -increased release of vasopressin

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all) : -increased stretch of arterioles supplying a particular tissue

Describe how blood pressure is regulated.

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all) : -occlusion of an artery supplying a particular tissue

By using the answer code (options may be used more than once or not at all) , indicate whether the following would -increased release of aldosterone

By using the answer code (options may be used more than once or not at all) , indicate whether the following would -chemoreceptors activated

Describe capillary filtration and reabsorption.

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all) : -application of ice to a sprained ankle

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all) : -histamine release in an injured tissue

By using the answer code (options may be used more than once or not at all) , indicate whether the following would -stress

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all) : -norepinephrine on cerebral arterioles

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all) : -sympathetic stimulation of kidney arterioles

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the answer code (options may be used more than once or not at all) : -a hyperemic response in the heart

By using the answer code (options may be used more than once or not at all) , indicate whether the following would -release of renin