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|| 7th Edition by Barbara J Aehlert
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|| Chapters 1 - 10 || || ||
,ECGs Made Easy 7th Edition by Barbara Aehlert Test Bank
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Table of Contents:
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Chapter 1. Anatomy & Physiology
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Chapter 2. Basic Electrophysiology
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Chapter 3. Sinus Mechanisms
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Chapter 4. Atrial Rhythms
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Chapter 5. Junctional Rhythms
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Chapter 6. Ventricular Rhythms
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Chapter 7. Atrioventricular Blocks
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Chapter 8. Pacemaker Rhythms
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Chapter 9. Introduction to the 12-Lead ECG
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Chapter 10. Post-Test
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,Chapter 01: Anatomy and Physiology
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Aehlert: ECGs Made Easy, 7th Edition
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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 |t he ||left ||ventricle. |The ||apex ||lies ||just
||above ||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 |o xygenated ||blood ||from ||t he ||lungs ||via ||the ||right ||and ||left
||pulmonary ||veins.
OBJ: || Identify |and |describe |the ||chambers ||of ||the ||heart ||a nd ||the ||vessels ||that ||enter ||or ||leave ||each.
3. The ||anterior ||surface ||o f ||t he ||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 |t oward ||t he ||left ||in ||the ||chest, ||the ||r ight ||ventricle ||is ||the ||area ||o f ||t he ||heart ||t hat
||lies ||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: | | Identify |a nd |explain ||the ||components ||of ||blood ||pressure ||a nd ||cardiac ||output.
5. The ||right ||atrium ||receives ||venous ||blood ||from ||the ||head, ||neck, ||and ||thorax ||via ||the ,|from
the ||remainder ||of ||the ||body ||via ||the
|| , ||and ||from ||the ||heart ||via ||the .
a. coronary|sinus; ||superior ||vena ||cava; ||inferior ||vena ||cava
b. superior ||vena ||cava; ||coronary|sinus; ||inferior ||vena ||cava
c. inferior |vena ||cava; ||superior ||vena ||cava; ||coronary|sinus
d. superior |vena ||cava; ||inferior ||vena ||cava; ||coronary|sinus
ANSWER: | | D
The ||right ||atrium ||receives ||blood ||low ||in ||oxygen ||from ||the ||superior ||vena ||cava, ||which ||carries
||blood ||from ||t he ||head ||and ||upper ||e xtremities; ||t he ||inferior |vena ||cava, ||which ||carries ||blood ||from
||the ||lower ||body; ||and ||the ||coronary ||sinus, ||which ||is ||the || largest ||vein ||that ||drains ||the ||heart.
OBJ: | | Identify |and |describe ||the |chambers ||of |the ||heart ||a nd ||the ||vessels ||that |enter ||or ||leave ||each.
6. The ||heart ||is ||divided ||into chambers ||but ||functions ||as ||a -sided ||pump.
a. two; ||four
b. three; |two
c. four; ||two
d. four; ||three
ANSWER: | | C
The ||heart ||has ||four ||chambers: ||two ||atria ||and ||two ||ventricles. |The ||right ||and ||left ||sides ||of ||the ||heart
||are ||separated ||by ||an ||internal ||wall ||of ||connective ||tissue ||called ||a ||septum. ||The || interatrial ||septum
||separates ||the ||right ||and ||left ||atria. ||The || interventricular ||septum ||separates ||the ||right ||and ||left
||ventricles. ||The ||septa ||separate ||the ||heart ||into ||two ||functional ||pumps. ||The ||right ||atrium ||and ||right
||ventricle || make ||up ||one ||pump. ||The ||left ||atrium ||and ||left ||ventricle || make ||up ||the ||other.
OBJ: || Identify |and |describe |the ||chambers ||of ||the ||heart ||a nd ||the ||vessels ||that ||enter ||or ||leave ||each.
7. Stimulation ||o f ||alpha1 ||receptors ||results ||in .
a. increased |heart |rate
b. peripheral ||vasoconstriction
c. constriction ||o f ||bronchial ||smooth ||muscle
d. increased |force ||o f |myocardial ||contraction
ANSWER: | | B
Alpha1 |receptors ||are |found ||in |t he |eyes, ||blood ||vessels, ||bladder, |and ||male |reproductive |organs.
||Stimulation ||of ||alpha1 ||receptor ||sites ||results ||in ||constriction.
OBJ: ||Compare |a nd |contrast |the |effects |of |sympathetic |a nd ||parasympathetic |stimulation ||of ||the |heart.
8. Which |side ||of ||the ||heart ||is ||a ||low-pressure ||system ||that ||pumps ||venous ||blood ||to ||the ||lungs?
a. Left
b. Right
ANSWER: | | B
The ||job ||of ||the ||right ||side ||of ||the ||heart ||is ||to ||pump ||unoxygenated ||blood ||to ||and ||through ||the ||lungs
||to |t he ||left ||side |o f ||t he ||heart. |This ||is ||called ||t he |pulmonary ||circulation. |The ||r ight ||side ||o f |t he ||heart
||is ||a ||low-pressure ||system.