Question 1

Which definition best describes ischemia?&#10;A) impaired blood flow and oxygen deprivation&#10;B) cardiovascular decline&#10;C) myocardial infarction&#10;D) low blood pressure

Accepted Answer

Ischemia means insufficient blood supply to a tissue or an organ. The ischemic tissue is deprived of oxygen and nutrients.

Question 2

If your blood pressure is 116/72, what would your pulse pressure be?&#10;A) 40 mm Hg&#10;B) 42 mm Hg&#10;C) 44 mm Hg&#10;D) 46 mm Hg

Accepted Answer

Your pulse pressure is the difference between the systolic and the diastolic pressures (44 mmHg or 116 minus 72).

Question 3

Unless otherwise stated, the term blood pressure refers to the blood pressure in which of the following vessels?&#10;A) aorta&#10;B) large arteries&#10;C) veins&#10;D) left ventricle

Accepted Answer

Blood pressure is highest in the large arteries and lowest in the veins, accounting for the flow of blood from arteries to veins.

Question 4

This instrument has two basic components: a dial indicated the pressure and an inflatable cuff.&#10;A) barometer&#10;B) sphygmomanometer&#10;C) speedometer&#10;D) stethoscope

Accepted Answer

The sphygmomanometer two basic components: a dial indicated the pressure and an inflatable cuff.

Question 5

Blood pressure in the veins can be very low. Three other mechanisms come to the rescue. Which of the following is not one of those helping mechanisms?&#10;A) skeletal muscle action&#10;B) respiratory movements&#10;C) exchange vessels&#10;D) constriction of the veins

Accepted Answer

Constriction of the veins is not a helping mechanism.

Question 6

Which of the following best describes postural hypotension?&#10;A) blood that has pooled in the veins while a patient is in the supine position resulting in dizziness when the patient attempts to stand&#10;B) stiff lower back muscles&#10;C) aching muscles from sitting in one place for too long a period of time&#10;D) hormonal imbalance that causes dizziness upon lying down

Accepted Answer

The water-filled balloon illustrates venodilation and pooling when the position of the balloon changes from a lying (horizontal) to standing (vertical) position.

Question 7

Three characteristics make the capillaries good exchange vessels. Which of the following is not one of those characteristics?&#10;A) quickly metabolized enzymes&#10;B) thin capillary walls&#10;C) millions of capillaries&#10;D) slow blood flow through the capillaries

Accepted Answer

Three characteristics make the capillaries good exchange vessels: thin capillary walls, large numbers of capillaries, and slow blood flow through the capillaries.

Question 8

A patient who is experiencing heart failure usually retains water. The excess water remains in the interstitium, causing which of the following?&#10;A) kidney disease&#10;B) edema&#10;C) low blood pressure&#10;D) nephrotic syndrome

Accepted Answer

The excess filtration of water exceeds the ability of the capillaries to reabsorb water. Thus, the excess water remains in the interstitium, causing edema.

Question 9

The circulatory system does all but which of the following?&#10;A) It acts as a delivery system.&#10;B) It regulates blood pressure.&#10;C) It helps regulate body temperature.&#10;D) It converts insulin for use in the body.

Accepted Answer

The circulatory system does more than run around in circles. It acts as a delivery system, regulates blood pressure, engages in the exchange of nutrients and waste, redistributes blood in response to changing body needs, and helps in the regulation of body temperature.

Question 10

In addition to cardiac output, this determines blood pressure.&#10;A) diastolic pressure&#10;B) pulse pressure&#10;C) systemic vascular resistance&#10;D) mean arterial blood pressure

Accepted Answer

Blood pressure is determined by the heart (cardiac output) and the blood vessels (systemic vascular resistance).

Deck 19: Functions of the Blood Vessels