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Anatomy & functional roles of the different types of blood vessels. Anatomy & functional roles of the different types of blood vessels.   -In the figure showing an anterior view of the arteries, which number indicates the left internal carotid artery? A)  1 B)  2 C)  3 D)  4 E)  5 -In the figure showing an anterior view of the arteries, which number indicates the left internal carotid artery?


A) 1
B) 2
C) 3
D) 4
E) 5

F) A) and B)
G) All of the above

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Which are found in the capillary wall? A: Endothelium B: Subendothelial layer C: Internal elastic lamina D: Intercellular clefts E: External elastic lamina F: Basement membrane


A) a, d, f
B) a, b, d, f
C) a, b, d, e, f
D) a, c, d, e, f
E) b, d, e, f

F) A) and B)
G) A) and E)

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The anterior communicating artery of the cerebral arterial circle connects the


A) posterior cerebral arteries.
B) anterior cerebral arteries.
C) vertebral arteries.
D) basilar artery and the internal carotid artery.
E) posterior communicating artery and the middle cerebral artery.

F) None of the above
G) A) and E)

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


A) baroreceptors to activate the vasomotor center.
B) chemoreceptors to activate the vasomotor center.
C) baroreceptors to activate the cardioinhibitory center and inhibit the cardioacceleratory center.
D) chemoreceptors to inhibit the vasomotor center.
E) baroreceptors and chemoreceptors to activate the cardioinhibitory center and inhibit the vasomotor center.

F) A) and B)
G) C) and D)

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Which of the following supplies blood to the medial thigh muscles?


A) Superior vesical artery
B) Superior gluteal artery
C) Middle rectal artery
D) Obturator artery

E) A) and D)
F) A) and C)

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Pulmonary arteries are wider than systemic arteries. Therefore, pulmonary circuit blood pressure is


A) high and blood flows very rapidly through pulmonary capillaries, maximizing gas exchange.
B) high and blood flows very slowly through pulmonary capillaries, maximizing gas exchange.
C) low and blood flows very rapidly through pulmonary capillaries, maximizing gas exchange.
D) low and blood flows very slowly through pulmonary capillaries, maximizing gas exchange.

E) All of the above
F) None of the above

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The force per unit area that blood places on the inside wall of a blood vessel


A) is called the pulse.
B) is called the blood pressure.
C) increases the further the vessel is from the heart.
D) is greater during diastole.
E) is greater in the inferior vena cava than in the common iliac vein.

F) None of the above
G) C) and D)

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The radial and ulnar veins fuse to form ________ veins; all of these veins are ________ veins.


A) brachial; deep
B) brachial; superficial
C) cephalic; deep
D) cephalic; superficial

E) A) and D)
F) B) and C)

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A network of small arteries called the ________ provides a blood supply to the tunica externa of very large vessels.


A) vasa vasorum
B) companion vessels
C) distributing arteries
D) fenestrated arteries
E) thoroughfare channels

F) B) and C)
G) B) and D)

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Some large molecules, such as fatty acids, are transported between capillaries and tissues by vesicular transport.

A) True
B) False

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The brachiocephalic veins are formed by the A: Internal jugular veins B: Right sigmoid sinus C: Left sigmoid sinus D: Subclavian veins E: Straight sinus


A) a, b, e
B) a, c, d
C) b, c, e
D) a, d
E) b, d, e

F) C) and D)
G) B) and C)

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Blood flow is


A) directly related to both the pressure gradient and the resistance.
B) directly related to the pressure gradient but inversely related to the resistance.
C) inversely related to both the pressure gradient and the resistance.
D) inversely related to the pressure gradient but directly related to the resistance.

E) None of the above
F) B) and C)

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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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What causes closure of the foramen ovale at birth?


A) Higher pressure in the left atrium, which causes interatrial septum flaps to close
B) Rapid myocardial tissue growth stimulated by pregnancy hormones
C) A rise in fetal oxygen levels, which triggers growth of the epithelial lining
D) An increase in endothelial mucous production, which forms a plug
E) Migration of connective tissue from the right atrioventricular valve

F) A) and B)
G) All of the above

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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.

A) True
B) False

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Renin converts


A) antiotensin I to antiotensin II.
B) angiotensin II to angiotensin I.
C) angiotensinogen to angiotensin I.
D) antidiuretic hormone to angiotensin.
E) antidiuretic hormone to angiotensinogen.

F) A) and C)
G) A) and E)

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The ________ vein runs alongside the lateral aspect of the upper limb and eventually drains into the axillary vein.

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The internal thoracic artery will become the ________, which carries blood to the superior abdominal wall.


A) superior epigastric artery
B) inferior epigastric artery
C) anterior intercostal arteries
D) musculophrenic artery
E) None of the answers is correct.

F) D) and E)
G) B) and C)

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The hepatic ________ system is a venous network that drains the GI tract and delivers blood to the liver.

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Oxygen and carbon dioxide are transported between the blood and interstitial fluid by way of


A) exocytosis and endocytosis by endothelial cells.
B) pinocytosis using fluid-filled vesicles.
C) diffusion from areas of higher concentration to lower concentration.
D) active transport (using ATP) by protein carriers of endothelial cells.

E) None of the above
F) B) and C)

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