Medical Quiz

The Cardiovascular System: Blood Vessels and Hemodynamics Quiz


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Which type of blood vessels plays a key role in regulating blood flow from arteries into capillaries.

A. Arteries

B. Arteriole

C. Capillaries

D. Venules


If the blood pressure reading on patients is 142/95, the diastolic pressure is_________

A. 47 mmHg

B. 74 mmHg

C. 95 mm Hg

D. 142 mmHg


Aldosterone affects blood pressure by

A. increasing heart rate.

B. increasing vasoconstriction of arterioles.

C. reducing blood volume.

D. increasing reabsorption of sodium ions and water by the kidneys.


Exchanges of substances between the blood and body tissue cells occur as blood flows through the________

A. Arteries

B. Arteriole

C. Capillaries

D. Venules


Cardiogenic shock is most likely to result from __________.

A. a severe bacterial infection

B. a systemic allergic reaction

C. multiple heart attacks

D. large-scale blood loss


The hepatic portal system collects blood from the __________ and then routes it to the __________.

A. GI tract; liver

B. liver; kidneys

C. kidneys; liver

D. liver; GI tract


All the following are vascular resistance EXCEPT

A. Size of the lumen

B. Blood viscosity

C. Total blood vessel length

D. Volume of blood


Blood vessels form a closed system of tubes that carries blood away from the heart are called.

A. Arteries

B. Arteriole

C. Capillaries

D. Venules


During systemic circulation, blood leaves the __________.

A. right ventricle and goes directly to the aorta

B. lungs and moves to the left atrium

C. right atrium and goes directly to the lungs

D. left ventricle and goes directly to the aorta


Which of the following veins is the longest in the body?

A. superior vena cava

B. inferior vena cava

C. great saphenous vein

D. femoral vein


Which of the followining vessels bring blood to the inferior vena cava?

A. coronary sinus and subclavian veins.

B. external jagular and carotid artery.

C. radial and brachial vein.

D. renal and common iliac veins


Which of the following is the correct sequence of layers in the vessel wall from outside to inside?

A. tunica externa, tunica media, tunica interna

B. tunica interna, tunica media, tunica externa

C. tunica media, tunica externa, tunica interna

D. tunica media, tunica interna, tunica externa


Which of the following arteries branches to form the common hepatic artery, left gastric artery, and splenic artery?

A. superior mesenteric artery

B. inferior mesenteric artery

C. gonadal arteries

D. celiac trunk


If blood pressure drops,a negative feedback mechanism causes.

A. activation of the venous reservoirs.

B. increase capillary blood flow.

C. increase heart rate, stroke volume, and vasoconstriction.

D. vasodilation of systemic arterioles.


The two most important baroreceptor reflexes are the ________

A. carotid sinus reflex and the aortic reflex

B. cardiac accelerator nerves and aortic reflex

C. vasomotor nerves and cardiac accelerator nerves

D. vasomotor nerves and carotid sinus reflex


Stimulation of baroreceptors in large arteries of the head and neck, triggers sympathetic stimulation of vascular smooth muscle, resulting in______

A. decrease in blood pressure

B. decrease in heart rate.

C. vasoconstriction.

D. vasodilation


Which of the following acts on the kidneys and blood vessels to raise blood pressure?

A. angiotensin II

B. epinephrine

C. antidiuretic hormone

D. atrial natriuretic peptide


Blood flows through the blood vessels because of the _________

A. establishment of a concentration gradient.

B. elastic recoil of the veins.

C. establishment of a pressure gradient.

D. viscosity of the blood.


Which of the following represents pulmonary circulation as the blood flows from the right ventricle?

A. pulmonary trunk -pulmonary veins- pulmonary capillaries-pulmonary arteries

B. pulmonary arteries- pulmonary capillaries- pulmonary trunk- pulmonary veins

C. pulmonary capillaries- pulmonary trunk-pulmonary arteries-pulmonary veins.

D. pulmonary trunk- pulmonary arteries-pulmonary capillaries- pulmonary veins.


The exchange of nutrients and waste products takes place through the walls of_______

A. arterioles

B. arteries

C. capillaries.

D. venules




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