7th Edition by Barbara J Aehlert
Chapters 1 - 10
,ECGs Made Easy 7th Edition by Barbara Aehlert Test Bank
Table of Contents:
Chapter 1. Anatomy & Physiology
Chapter 2. Basic Electrophysiology
Chapter 3. Sinus Mechanisms
Chapter 4. Atrial Rhythms
Chapter 5. Junctional Rhythms
Chapter 6. Ventricular Rhythms
Chapter 7. Atrioventricular Blocks
Chapter 8. Pacemaker Rhythms
Chapter 9. Introduction to the 12-Lead ECG
Chapter 10. Post-Test
,Chapter 01: Anatomy and Physiology
Aehlert: ECGs Made Easy, 7th Edition
MULTIPLE CHOICE
1. The apex of the heart is formed by the .
a. tip of the left ventricle
b. tip of the right atrium
c. right atrium and right ventricle
d. left atrium and left ventricle
ANSWER: A
The heart’s apex, or lower portion, is formed by the tip of the left ventricle. The apex lies
justabove the diaphragm, between the fifth and sixth ribs, in the midclavicular line.
OBJ: Identify the surfaces of the heart.
2. The left atrium receives blood from the .
a. pulmonary veins
b. aorta
c. pulmonary arteries
d. inferior vena cava
ANSWER: A
The left atrium receives freshly oxygenated blood from the lungs via the right and
leftpulmonary veins.
OBJ: Identify and describe the chambers of the heart and the vessels that enter or leave each.
3. The anterior surface of the heart consists primarily of the .
a. left atrium
b. right atrium
c. left ventricle
d. right ventricle
ANSWER: D
The front (anterior) surface of the heart lies behind the sternum and costal cartilages. It is
formed by portions of the right atrium and the left and right ventricles. However, because
the heart is tilted slightly toward the left in the chest, the right ventricle is the area of the
heart thatlies most directly behind the sternum.
OBJ: Identify the surfaces of the heart.
4. Blood pressure is determined by multiplied by .
a. stroke volume; heart rate
b. heart rate; cardiac output
c. cardiac output; peripheral vascular resistance
d. stroke volume; peripheral vascular resistance
ANSWER: C
Blood pressure is equal to cardiac output multiplied by peripheral vascular resistance.
, OBJ: s Identify sand sexplain sthe scomponents sof sblood spressure sand scardiac soutput.
5. The sright satrium sreceives svenous sblood sfrom sthe shead, sneck, sand sthorax svia sthe ,
sfromsthe sremainder sof sthe sbody svia sthe , sand sfrom sthe
sheart svia sthe .
a. coronary ssinus; ssuperior svena scava; sinferior svena scava
b. superior svena scava; scoronary ssinus; sinferior svena scava
c. inferior svena scava; ssuperior svena scava; scoronary ssinus
d. superior svena scava; sinferior svena scava; scoronary ssinus
ANSWER: s D
The sright satrium sreceives sblood slow sin soxygen sfrom sthe ssuperior svena scava, swhich
scarries sblood sfrom sthe shead sand supper sextremities; sthe sinferior svena scava, swhich
scarries sblood sfromsthe slower sbody; sand sthe scoronary ssinus, swhich sis sthe slargest svein
sthat sdrains sthe sheart.
OBJ: s Identify sand sdescribe sthe schambers sof sthe sheart sand sthe svessels sthat senter sor sleave
seach.
6. The sheart sis sdivided sinto chambers sbut sfunctions sas sa -sided spump.
a. two; sfour
b. three; stwo
c. four; stwo
d. four; sthree
ANSWER: s C
The sheart shas sfour schambers: stwo satria sand stwo sventricles. sThe sright sand sleft ssides sof
sthe sheartsare sseparated sby san sinternal swall sof sconnective stissue scalled sa sseptum. sThe
sinteratrial sseptum sseparates sthe sright sand sleft satria. sThe sinterventricular sseptum
sseparates sthe sright sand sleft sventricles. sThe ssepta sseparate sthe sheart sinto stwo
sfunctional spumps. sThe sright satrium sand sright sventricle smake sup sone spump. sThe sleft
satrium sand sleft sventricle smake sup sthe sother.
OBJ: s Identify sand sdescribe sthe schambers sof sthe sheart sand sthe svessels sthat senter sor sleave seach.
7. Stimulation sof salpha1 sreceptors sresults sin .
a. increased sheart srate
b. peripheral svasoconstriction
c. constriction sof sbronchial ssmooth smuscle
d. increased sforce sof smyocardial scontraction
ANSWER: s B
Alpha1 sreceptors sare sfound sin sthe seyes, sblood svessels, sbladder, sand smale sreproductive
sorgans.sStimulation sof salpha1 sreceptor ssites sresults sin sconstriction.
OBJ: s Compare sand scontrast sthe seffects sof ssympathetic sand sparasympathetic sstimulation sof sthe
sheart.
8. Which sside sof sthe sheart sis sa slow-pressure ssystem sthat spumps svenous sblood sto sthe
slungs?
a. Left
b. Right
ANSWER: s B