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Pathophysiology Unit4-6 > Ch29 QUIZ > Flashcards

Ch29 QUIZ Flashcards

0
Q
  1. Which of the following is NOT a function of pericardium?
    a. prevents displacement of heart during gravitational acceleration & deceleration
    b. physical barrier that protects heart against infection & inflammation
    c. contains pain receptors & mechanoreceptors that affect BP
    d. lining that is continuous w/ arteries, veins, & capillaries of the body
A

d. lining that is continuous w/ arteries, veins, & capillaries of the body

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1
Q
  1. Which of the four chambers has thickest wall?
    a. left atrium
    b. right atrium
    c. left ventricle
    d. right ventricle
A

c. left ventricle

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2
Q
  1. Which of the following is an ACCURATE statement regarding blood flow through the heart?
    a. blood flows from left atrium through tricuspid valve to left ventricle
    b. blood flows from right atrium through aortic valve to right ventricle
    c. blood flows from right ventricle through pulmonic semilunar valve
    d. blood flows from left ventricle through bicuspid valve
A

c. blood flows from right ventricle through pulmonic semilunar valve

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3
Q
  1. Which of the following is CORRECT description of A wave
    a. generated by atrial contraction
    b. early diastolic peak caused by filling of atrium
    c. produced d/t descent of tricuspid valve ring
    d. reflects rapid flow from the great veins & right atrium into right ventricle
A

a. generated by atrial contraction

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4
Q
  1. Which of the following arteries travels in coronary sulcus btw left atrium & left ventricle?
    a. left anterior descending
    b. circumflex
    c. right coronary
    d. left coronary
A

b. circumflex

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5
Q
  1. Which part of heart is responsible for electrical stimulation?
    a. AV node
    b. sinus node
    c. bundle of his
    d. right bundle branch
A

b. sinus node

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6
Q
  1. Which of the following represents the measure of time from the onset of atrial activation to onset of ventricular activation?
    a. PR interval
    b. QRS complex
    c. ST interval
    d. QT interval
A

a. PR interval

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7
Q
  1. Which of the following is a DIFFERENCE btw cardiac & skeletal muscle fibers?
    a. cardiac fibers only have one nucleus & skeletal muscle fibers have many nuclei
    b. cardiac fibers have a slower transmission than skeletal muscle fibers
    c. cardiac fibers are arranged in parallel
    d. cardiac fibers have fewer mitochondria than muscle fibers
A

a. cardiac fibers only have one nucleus & skeletal muscle fibers have many nuclei

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8
Q
  1. What is the APPROPRIATE term for thick filament of myosin that constitute a central dark band?
    a. A band
    b. I band
    c. Z line
    d. M line
A

b. I band

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9
Q
  1. Which drugs have a major effect in decreasing strength of cardiac contraction?
    a. Ca channel blockers
    b. Narcotics (morphine)
    c. adenosine
    d. aspirin
A

a. Ca channel blockers

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10
Q
  1. Which 2 items are r/in Frank-Starling law of heart
    a. resting sarcomere length to tension generation
    b. resting sarcomere length to end-diastolic volume
    c. tension generation & left ventricle pressure
    d. tension generation & diastolic filling pressure
A

a. resting sarcomere length to tension generation

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11
Q
  1. Which of the following is CORRECT definition of preload?
    a. impedance to ejection of blood from left ventricle
    b. wall tension that is r/t internal blood vessel radius
    c. lower tension curve than normal
    d. pressure generated by the end-diastolic volume
A

d. pressure generated by the end-diastolic volume

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12
Q
  1. Which of the following is cardioinhibitory center
    a. sympathetic excitation
    b. parasympathetic excitation
    c. bainbridge reflex
    d. baroreceptor reflex
A

b. parasympathetic excitation

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13
Q
  1. Which of the following hormones is released from atrial tissue in response to increase in blood volume
    a. epinephrine
    b. norepinephrine
    c. thyroid hormone
    d. atrial natriuretic peptide
A

d. atrial natriuretic peptide

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14
Q
  1. What are the 2 factors that determine cardiac output
    a. parasympathetic & sympathetic activity
    b. preload & afterload
    c. HR & stroke volume
    d. rt & lt atrial pressure
A

c. HR & stroke volume

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15
Q
  1. Which of the following is the source of nutrients for the blood vessels
    a. tunica intima
    b. tunica media
    c. adventitia
    d. vas vasorum
A

d. vas vasorum

16
Q
  1. Which of the following is the APPROPRIATE equation for mean arterial pressure
    a. MAP=diastolic + 1/3 (systolic-diastolic)
    b. MAP=VAP
    c. MAP=(P1-P2)/resistance
    d. MAP=pressure x radius/wall thickness
A

a. MAP=diastolic + 1/3 (systolic-diastolic)

17
Q
  1. Which of the following actions does NOT cause a release of renin
    a. increase in BP at renal artery
    b. decrease in amt of Na delivered to kidney
    c. B-adregenic stimuli
    d. low K concentration
A

a. increase in BP at renal artery

18
Q
  1. What is the effect of angiotensin II
    a. vasodilation
    b. vasoconstriction
    c. inhibition of aldosterone
    d. excretion of Na at kidney
A

b. vasoconstriction

19
Q
  1. Which of the following peptides has function of regulation of Na & H2O balance
    a. atrial natriuretic peptide (ANP)
    b. brain natriuretic peptide (BNP)
    c. C-type natriuretic peptide (CNP)
    d. urodilatin
A

d. urodilatin

20
Q
  1. Which of the following is NOT correct regarding autoregulation
    a. blood vessels regulate their own blood flow
    b in coronary circulation, pressure is btw 60-180 mmHg
    c. mechanism is well documented & is r/t sympathetic system
    d. autoregulation ensures constant coronary blood flow
A

c. mechanism is well documented & is r/t sympathetic system

21
Q
  1. Which of the following is TRUE regarding thoracic duct
    a. major source of venous return to heart
    b. receives lymph from most of the body
    c. receives lymph from right arm, head, & thorax
    d. dumps blood into right atrium
A

b. receives lymph from most of the body

Pathophysiology Unit4-6 (21 decks)

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