A&P II - FINAL EXAM 2025 ACTUAL EXAM
WITH 220 QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED GRADED A+
A Correct Answer The vessels that permit exchange of materials
between the blood and the surrounding interstitial fluid are termed
A) capillaries.
B) arterioles.
C) arteries.
D) venules
C Correct Answer Which vessel type typically has an internal
diameter of about 30 μm and has a tunica media comprised of 1-2
layers of smooth muscle cells?
A) capillaries
B) muscular arteries
C) arterioles
D) venules
A Correct Answer Which condition is described as the formation
of lipid deposits in the tunica media associated with damage to
the endothelial lining?
A) atherosclerosis
B) phlebitis
C) thrombus
D) aneurysm
D Correct Answer Blood flowing out of a capillary bed first enters
structures called ________.
,A) arterial anastomoses
B) venous valves
C) arteriovenous anastomoses
D) venules
A Correct Answer Which vessel type typically lacks a tunica
media when its diameter is less than 50 μm?
A) venules
B) veins
C) arterioles
D) arteries
A Correct Answer In general, for a vessel of a given size, a
typical artery ________ compared to a typical vein.
A) is more elastic
B) has less smooth muscle in its tunica media
C) has no endothelium
D) has thinner walls
A Correct Answer Which blood vessels are able to absorb the
pressure changes that occur during the cardiac cycle?
A) elastic arteries
B) arterioles
C) muscular arteries
D) arterial anastomoses
D Correct Answer Regarding the typical structure of blood vessel
walls, those that have only a tunica intima are the
A) arteries.
B) arterioles.
C) veins.
D) capillaries.
,B Correct Answer In a process called autoregulation, ________
in response to a decline in dissolved oxygen levels within a tissue.
A) blood flow to the area decreases
B) the precapillary sphincters relax
C) vasomotion is not a factor
D) the diameter of the supplying capillaries' entrance narrows
D Correct Answer Why do veins have relatively thin walls?
A) It allows a typical vein to change the diameter of its lumen.
B) It allows a typical vein to be stretched as its diameter increases
during ventricular systole.
C) A typical vein's wall allows exchange to occur quickly by
diffusion across endothelial cells or through gaps between
adjacent endothelial cells.
D) A typical vein does not need to withstand much pressure
B Correct Answer What is the advantage of the small diameter of
capillaries?
A) It dampens the rise in pressure during ventricular systole.
B) It slows blood flow, allowing sufficient time for exchange of
materials across capillary walls to occur.
C) It absorbs the pressure changes that occur during the cardiac
cycle.
D) It allows the vessels to overcome the force of gravity.
D Correct Answer Choose the correct description of a typical
medium-sized vein.
A) In these vessels, the thin tunica media is surrounded by a thick
tunica externa composed of elastic and collagen fibers.
B) Ranging from 2 mm to 9 mm in diameter, its thin tunica media
consists of one to two layers of smooth muscle cells.
C) It has a diameter of approximately 0.4 cm and has more
smooth muscle cells and fewer elastic fibers.
, D) Ranging from 2 mm to 9 mm in diameter, its tunica media
contains several smooth muscle layers, and the relatively thick
tunica externa has longitudinal bundles of elastic and collagen
fibers.
D Correct Answer Which of the following is defined as a force
exerted against a liquid?
A) osmotic pressure
B) peripheral resistance
C) turbulence
D) hydrostatic pressure
B Correct Answer Which of the following is a transport
mechanism used to move materials across capillary walls?
A) pinocytosis
B) filtration
C) venoconstriction
D) endocytosis
D Correct Answer Edema is defined as a (n)
A) trauma to the blood.
B) constriction of vessels.
C) release of bone fragments.
D) abnormal accumulation of interstitial fluid in the tissues.
B Correct Answer The difference between the systolic and
diastolic pressures is the
A) capillary pressure.
B) pulse pressure.
C) arterial pressure.
D) venous pressure
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