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Exam 20: Cardiovascular System: Vessels and Circulation

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Question 71

Multiple Choice

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In arteries,the thickest layer of the wall is the

A) tunica externa.
B) tunica media.
C) tunica intima.
D) tunica adventitia.
E) None of the answers are correct because all the layers are of the same dimension.

F) A) and D)
G) A) and E)

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Question 72

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An increase in blood flow that follows a temporary disruption of blood flow is known as reactive _________.

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Question 73

Multiple Choice

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-In the figure showing the veins of the lower extremity,which number indicates the great saphenous vein

Aldosterone and atrial natriuretic peptide have ________ effects on blood pressure.

Several esophageal branches emerge off of which of the following vessels

High carbon dioxide levels and low pH in blood of the carotid arteries will stimulate

If someone were to have abnormally low levels of protein in their blood,then net filtration pressure would

The arteries that anastomose and form the two arterial arches in the palm are the _____ and _____ arteries.

The driving force propelling blood through the circulatory system is the difference in blood pressure from the beginning of a blood vessel to its end.This difference is known as the blood pressure _________.

Among the advantages of the cerebral arterial circle is the presence of collateral channels of blood flow to the brain should a supply artery become blocked.

The respiratory pump assists blood movement within the veins of the trunk,because as a person inspires,

Give the formula for net filtration pressure;then include typical values (at the arterial end of a capillary bed)for all variables and include units.

The aorta contains specialized sensory nerve endings that respond to stretch of the vessel wall.These pressure-sensitive structures are called aortic arch _________.

Renin converts

During a dangerous situation,the sympathetic nervous system causes widespread vasoconstriction,raising systemic blood pressure.This is an example of the myogenic response.In this example,systemic blood pressure is changing.In contrast,the myogenic response controls local blood flow to a specific tissue.

Increases in angiotensin II levels cause decreases in blood pressure.