Chapter 19: Functions Of The Blood Vessels
You may know already that the blood vessels are the thin, lengthy tubes within your body through which blood is pumped by the heart so that you can get the blood you need from head to toe at all times, but do you know the exact functions? Take this quiz and we’ll see how much you know.
- 1.A sphygmomanometer measures
- A.
Blood flow.
- B.
Hematocrit.
- C.
Blood pressure.
- D.
Oxygen saturation.
- 2.Blood pressure is lowest in the
- A.
Inferior vena cava.
- B.
Aorta.
- C.
Circle of Willis.
- D.
Femoral artery.
- 3.The characteristic of the arteriole that allows it to function as a resistance vessel is its
- A.
Thin membrane.
- B.
Porous membrane.
- C.
Valves.
- D.
Smooth muscle.
- 4.Which condition is characterized by poor skin turgor?
- A.
Expanded blood volume
- B.
Pulmonary edema
- C.
Varicose veins
- D.
Dehydration
- 5.Which artery is most oftern used to measure the blood pressure?
- A.
Carotid artery
- B.
Brachial artery
- C.
Femoral artery
- D.
Circle of Willis
- 6.Which of the following best indicates why a person who is taking antihypertensive drugs should not drink alcohol or sit in a hot tub?
- A.
Hypokalemia (low potassium) and flabby muscles
- B.
Hypertensive crisis and stroke
- C.
Vasodilation and hypotension
- D.
Hemolysis and jaundice
- 7.Which of the following is true?
- A.
CO= HR*SV*PULSE PRESSURE
- B.
BP=CO*SV*R
- C.
BP=SV*PULSE PRESSURE
- D.
BP=SV*HR*R
- 8.Plasma oncotic pressure is due primarily to
- A.
Blood pressure
- B.
Plasma proteins, especially albumin
- C.
Lymph
- D.
Electrolytes such as sodium and chloride
- 9.Which of the following is most likely to induce a reflex bradycardia?
- A.
Development of hypovolemic (low blood volume) shock, as in hemorrage
- B.
Exertion of pressure over the carotid sinus (tight collar)
- C.
Administration of nitroglycerine (a vasodilator drug)
- D.
Administration of a diuretic for hypertension
- 10.If capillary hydrostatic pressure (CHP) exceeds plasma oncotic pressure,
- A.
Fluid moves from the interstitium into the capillary
- B.
No net flux of water occurs
- C.
Blood volume expansion occurs
- D.
Fluid is filtred into the interstitium
- 11.If plasma oncotic pressure exceeds (CHP),
- A.
Fluid is filtred from the capillary into the interstitium
- B.
Fluid moves osmotically into the capillary from the interstitium
- C.
Plasma proteins diffuse from the capillary into the interstitium
- D.
Blood volume decreases
- 12.Which of the following is most related to the systolic reading, diastolic reading,a nd Korotkoff sounds?
- A.
Cardiac output
- B.
Blood pressure
- C.
The electrical activity of the heart
- D.
Coronary blood flow
- 13.What do the baroreceptors regulate?
- A.
Blood volume
- B.
Hematocrit
- C.
Blood pressure
- D.
Rate of capillary filtration
- 14.Which of the following increases vascular reisistance, stroke volume, and heart rate?
- A.
Stimulation of the vagus nerve
- B.
Stimulation of the parasympathetic nervous system
- C.
Administration of a sympatholytic drug
- D.
Stimulation of the sympathetic nervous system
- 15.Which of the following structures has the greatest effect on vascular resistance?
- A.
Veins
- B.
Arterioles
- C.
Heart
- D.
Capillaries
- 16.These blood vessels have very thin walls and are called the exchange vessels
- A.
Arterioles
- B.
Veins
- C.
Capillaries
- D.
Arteries
- 17.What is the pulse pressure when a person's blood pressure is 120/80 mm Hg?
- A.
120
- B.
80
- C.
40
- D.
Can't determine the pulse pressure from this info
- 18.Which of the following is most likely to develop if the pressure within the pulmonary capillaries increases?
- A.
Pedal edema
- B.
Pulsating jugular veins
- C.
Pulmonary edema
- D.
Varicose veins
- 19.What is the term that refers to the difference between the systolic and diastolic blood pressure reading?
- A.
Pulse deficit
- B.
Cardiac output
- C.
Stroke volume
- D.
Pulse pressure
- 20.Which of the following elevates blood pressure?
- A.
Diuretics
- B.
Vasodilators
- C.
Vasopressors
- D.
Antihypertensive drugs
- 21.Which term refers to drugs that cause vasodilation and reduce vascular resistance?
- A.
Diuretics
- B.
Antihypertensive drugs
- C.
Inotropic drugs
- D.
Sympathomimetic drugs
- 22.Which part of the brain participates in the baroreceptor reflex?
- A.
Cerebrum
- B.
Corpus callosum
- C.
Cerebellum
- D.
Medulla oblongata
- 23.Both epinephrine and norepinephrine are
- A.
Steroids
- B.
Secreted by the adrenal cortex
- C.
Vasopressors
- D.
Blood pressure-lowering hormones
- 24.A sudden rise in blood pressure is most likely to produce a baroreceptor-induced
- A.
(+) inotropic effect
- B.
Bradycardia
- C.
Narrowed pulse pressure
- D.
Increased heart rate
- 25.Which statement is not true about baroreceptors?
- A.
Can induce a reflex tachycardia
- B.
Located in the carotid sinus and aortic arch
- C.
Activated by hypoxemia
- D.
Activated by a hemorrahage-induced decline in blood pressure
Questions: 53 | Attempts: 5226 | Last updated: Jan 3, 2019
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