Chapter 12: The Peripheral Vascular System

Question 1

The arteries contain 3 concentric layers of tissue:

Answer 1

the intima
the media
the adventitia
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Question 2

Capillaries have an endothelial cell lining, but no…

Answer 2

…media, facilitating rapid diffusion of oxygen and carbon dioxide.
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Question 3

The popliteal artery branches into..

Answer 3

…dorsalis pedis artery and posterior tibial artery.

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Question 4

Only the superficial lymph nodes are accessible to physical examination. These include…

Answer 4

…the cervical nodes, the axillary nodes, and nodes in the arms and legs.
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Question 5

Where are the epitrochlear nodes located?

Answer 5

on the medial surface of the arm, about 3 cm above the elbow

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Question 6

Hydrostatic pressure within the capillary bed, especially near the arteriolar end…

This movement is aided by the relatively weak…

Answer 6

…forces fluid out into the tissue spaces.

…osmotic attraction of proteins within the tissues (called interstitial colloid oncotic pressure) and is opposed by the hydrostatic pressure of the tissues.
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Question 7

As blood continues through the capillary bed toward the venous end, its hydrostatic pressure falls, and another force gains dominance. This is called the…

Answer 7

…colloid oncotic pressure of plasma proteins, which pulls fluid back into the vascular tree.
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Question 8

The prevalence of abdominal aortic aneurysms (AAAs) in first degree relatives is…

Answer 8

…15% - 28%

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Question 9

What is the leading cause of sudden death?

Answer 9

AAA rupture.

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Question 10

It is important to note that an inguinal mass suspicious for an incarcerated hernia is often diagnosed…

Answer 10

…as AAA at surgery.

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