BIO 242 EXAM 3 FINAL PAPER 2026
UPDATED QUESTIONS WITH COMPLETE
SOLUTIONS GUARANTEED PASS
◎ Resistance is lower in the pulmonary circuit than in the systemic circuit. ANSWER: - true
◎ The more proteins in blood, the higher the blood viscosity. ANSWER: - true
◎ The pressure gradient for blood flow through the systemic circuit is the mean arterial
pressure. ANSWER: - true
◎ Which of the following is NOT one of the structural components of blood vessels?
hemoglobin
smooth muscle and connective tissue
collagen
elastin ANSWER: - hemoglobin
◎ What is/are the component(s) of a blood vessel's extracellular matrix that provide(s) the
tensile strength required to withstand pressure? ANSWER: - collagen
◎ The lumen of every blood vessel is lined by a monolayer of what cell type? ANSWER: -
endothelial cells
◎ Define blood vessel compliance? ANSWER: - Compliance is the relative ease of which a blood
vessel expands or distends.
◎ Where are the arterial baroreceptors located? ANSWER: - aortic arch and carotid sinuses
(carotid arteries)
◎ What has the elastic recoil of its walls during diastole, causing a continuation of blood flow
throughout the cardiac cycle? ANSWER: - arteries
◎ The pulsatile nature of blood pressure is greatest in which blood vessels? ANSWER: - arteries
◎ Arteries have LOW compliance and LOW resistance to flow. ANSWER: - true
, ◎ What component of artery walls allows them to store energy that is later used to maintain
continuous blood flow through the circulatory system? ANSWER: - elastin
◎ Increases in angiotensin II levels in the blood will elevate total peripheral resistance.
ANSWER: - true
◎ There is a progressive decrease in pressure throughout the vasculature as blood moves down
its pressure gradient. ANSWER: - true
◎ Due to their diameter, capillaries have the greatest individual resistance, while the arteriole
networks have the greatest total resistance. ANSWER: - true
◎ What structures of the cardiovascular system are innervated by the sympathetic nervous
system, but are NOT by the parasympathetic nervous system? ANSWER: - ventricular
myocardium, arteriolar smooth muscle & venous smooth muscle
◎ Parasympathetic nervous activity has what effect on systemic arterioles? ANSWER: - neither
vasoconstriction and vasodilation
◎ Sympathetic nerves have what effect on systemic arterioles? ANSWER: - Vasoconstriction
◎ Carbon dioxide has what effect on systemic arterioles? ANSWER: - vasodilation
◎ Angiotensin II has what effect on systemic arterioles? ANSWER: - vasoconstriction
◎ The velocity of blood flow is greatest in the arteries and slowest in the capillaries. ANSWER: -
true
◎ Statements regarding capillary function... ANSWER: - Capillary exchange in the CNS is tightly
regulated.
Diffusion is the most common exchange mechanism.
Transcytosis of exchangeable proteins can occur.
◎ What is bulk flow of fluid from inside a capillary into interstitial fluid called? ANSWER: -
filtration
◎ Damage to capillary walls can cause edema? ANSWER: - true
UPDATED QUESTIONS WITH COMPLETE
SOLUTIONS GUARANTEED PASS
◎ Resistance is lower in the pulmonary circuit than in the systemic circuit. ANSWER: - true
◎ The more proteins in blood, the higher the blood viscosity. ANSWER: - true
◎ The pressure gradient for blood flow through the systemic circuit is the mean arterial
pressure. ANSWER: - true
◎ Which of the following is NOT one of the structural components of blood vessels?
hemoglobin
smooth muscle and connective tissue
collagen
elastin ANSWER: - hemoglobin
◎ What is/are the component(s) of a blood vessel's extracellular matrix that provide(s) the
tensile strength required to withstand pressure? ANSWER: - collagen
◎ The lumen of every blood vessel is lined by a monolayer of what cell type? ANSWER: -
endothelial cells
◎ Define blood vessel compliance? ANSWER: - Compliance is the relative ease of which a blood
vessel expands or distends.
◎ Where are the arterial baroreceptors located? ANSWER: - aortic arch and carotid sinuses
(carotid arteries)
◎ What has the elastic recoil of its walls during diastole, causing a continuation of blood flow
throughout the cardiac cycle? ANSWER: - arteries
◎ The pulsatile nature of blood pressure is greatest in which blood vessels? ANSWER: - arteries
◎ Arteries have LOW compliance and LOW resistance to flow. ANSWER: - true
, ◎ What component of artery walls allows them to store energy that is later used to maintain
continuous blood flow through the circulatory system? ANSWER: - elastin
◎ Increases in angiotensin II levels in the blood will elevate total peripheral resistance.
ANSWER: - true
◎ There is a progressive decrease in pressure throughout the vasculature as blood moves down
its pressure gradient. ANSWER: - true
◎ Due to their diameter, capillaries have the greatest individual resistance, while the arteriole
networks have the greatest total resistance. ANSWER: - true
◎ What structures of the cardiovascular system are innervated by the sympathetic nervous
system, but are NOT by the parasympathetic nervous system? ANSWER: - ventricular
myocardium, arteriolar smooth muscle & venous smooth muscle
◎ Parasympathetic nervous activity has what effect on systemic arterioles? ANSWER: - neither
vasoconstriction and vasodilation
◎ Sympathetic nerves have what effect on systemic arterioles? ANSWER: - Vasoconstriction
◎ Carbon dioxide has what effect on systemic arterioles? ANSWER: - vasodilation
◎ Angiotensin II has what effect on systemic arterioles? ANSWER: - vasoconstriction
◎ The velocity of blood flow is greatest in the arteries and slowest in the capillaries. ANSWER: -
true
◎ Statements regarding capillary function... ANSWER: - Capillary exchange in the CNS is tightly
regulated.
Diffusion is the most common exchange mechanism.
Transcytosis of exchangeable proteins can occur.
◎ What is bulk flow of fluid from inside a capillary into interstitial fluid called? ANSWER: -
filtration
◎ Damage to capillary walls can cause edema? ANSWER: - true
