A&P EXAM 2 2024/2025 NEWEST!!! COMPLETE ACTUAL EXAM
QUESTIONS AND CORRECT ANSWERS (VERIFIED ANSWERS )
GUARANTEED PASS.
Which layer of the typical blood vessel is constructed from simple
squamous epithelium?
tunica intima tunica externa tunica
media - ANSWER-tunica intima
Which of these features is found only in arteries?
elastic membranes lumen vasa vasorum valves
- ANSWER-elastic membranes
What type of vessel has a relatively large amount of smooth muscle
compared to its elastic tissue?
elastic artery capillary arteriole muscular
artery - ANSWER-muscular artery
Arteries always carry oxygenated blood away from the heart.
True
False - ANSWER-False
Large diameter, thick-walled arteries that are close to the heart and
act as pressure reservoirs would be __________.
arterioles veins elastic arteries muscular
arteries - ANSWER-elastic arteries
,Due to the branching of arteries the type of arteries that would be
most numerous would be ________.
muscular arteries elastic arteries
arterioles pulmonary arteries -
ANSWER-arterioles
Which of the choices below explains why the arterioles are known as
resistance vessels?
The contraction and relaxation of the smooth muscle in their walls
can change their diameter.
They distribute blood to various parts of the body.
They contain a large quantity of elastic tissue.
Their prime function is the exchange of nutrients and wastes between
the blood and tissue cells. - ANSWER-The contraction and relaxation
of the smooth muscle in their walls can change their diameter.
Which statement best describes arteries?
All carry blood away from the heart.
All contain valves to prevent the backflow of blood.
Only large arteries are lined with endothelium.
All carry oxygenated blood to the heart. - ANSWER-All carry blood
away from the heart.
,In red bone marrow newly formed blood cells enter the circulation.
You would expect to see many ________ type of capillaries in red
bone marrow.
has the same effect as decreasing blood vessel radius has the same
effect as decreasing blood vessel radius and increases resistance to
flow increases resistance to flow
has the same effect as increasing blood vessel radius and increases
resistance to flow has the same effect as increasing blood vessel
radius - ANSWER-has the same effect as decreasing blood vessel
radius and increases resistance to flow
Which flow tube length had the greatest flow rate?
, 10 mm
40 mm
30 mm
20 mm
All flow tube lengths had the same flow rate. - ANSWER-10 mm
Which of the following has the greatest effect on blood flow?
Blood vessel radius, viscosity and blood vessel length all have an
equal effect. blood vessel radius viscosity blood vessel length -
ANSWER-blood vessel radius
Which of the following describes why the body might need to
increase vessel length?
to accommodate weight gain and height changes to
accommodate height changes
to accommodate weight gain to accommodate weight loss -
ANSWER-to accommodate weight gain and height changes
When blood vessel length increases, _______.
surface area increases resistance to flow decreases friction
decreases surface area increases and resistance to flow decreases
– ANSWER-surface area increases
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