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Exam (elaborations)

MEDCA EKG 2019 Exam Questions with Correct Answers

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  • MEDCA EKG

MEDCA EKG 2019 Exam Questions with Correct Answers 3 major veins attached to heart - Answer-pulmonary vein, superior vena cava, inferior (posterior) vena cava Pulmonary vein carries oxygen-enriched blood from - Answer-lungs to left atrium Superior & inferior vena cava carries oxygen-deprived...

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  • August 22, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • MEDCA EKG
  • MEDCA EKG
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MEDCA EKG 2019 Exam Questions
with Correct Answers
3 major veins attached to heart - Answer-pulmonary vein, superior vena cava, inferior
(posterior) vena cava

Pulmonary vein carries oxygen-enriched blood from - Answer-lungs to left atrium

Superior & inferior vena cava carries oxygen-deprived blood from - Answer-body to
heart

Heart has two nodes - Answer-sinoatrial (SA) node & atrioventricular (AV) node

Sinoatrial (SA) Node location - Answer-upper wall of right atrium

Atrioventricular (AV) Node location - Answer-right side of part separating left & right
atria

"Natural pacemaker" of heart - Answer-SA node

Sinoatrial (SA) Node coordinates heart contractions by - Answer-generating electrical
impulses, causing the left & right atria to contract

1/10th of a second delay of impulses from SA node to AV node allow - Answer-left &
right atria to contract, emptying
blood into the ventricles

AV node sends the impulses down the - Answer-atrioventricular bundle of His

Atrioventricular bundle branches off into two bundles which carry - Answer-impulses
down the left and right ventricles

Neurological pathways connect the heart with - Answer-medulla of the brain

Medulla of the brain, controls autonomic functions such as - Answer-breathing, heart
function, & blood vessel function

Gas exchange occurs - Answer-within the lungs' alveoli (air sacs)

3 major functions of the cardiovascular system - Answer-transport, protection, &
regulation

Augustus D. Waller publishes first human electrocardiogram in - Answer-1887

, One cardiac impulse and the recharging of cells usually take - Answer-0.5 seconds

EKG rest usually takes about - Answer-5 to 10 minutes

Electrodes should always be attached - Answer-BEFORE entering patient information

3 standard leads - Answer-Lead I, Lead II, Lead III

3 augmented leads - Answer-aVF, aVR, aVL (aV stands for augmented voltage)

Lead II, Lead III, and Lead aVF look at - Answer-inferior part of heart

Lead aVR looks at - Answer-right side of the heart

Leads I, II, and III are - Answer-electrically equidistant from the heart's electrical activity

Lead I and Lead aVL look at - Answer-left lateral part of heart

aVF placed on - Answer-left foot or left lower abdomen

aVR placed on - Answer-right wrist or shoulder

aVL placed on - Answer-left wrist or shoulder

Lead | - Answer-positive (+) electrode: left arm
negative (-) electrode: right arm

Lead | records the difference between - Answer-left & right arms

Lead || - Answer-positive (+) electrode: left leg
negative (-) electrode: right arm

Lead || records the difference between - Answer-left leg & right arm

Lead ||| - Answer-positive (+) electrode: left leg
negative (-) electrode: left arm

Holter monitoring - Answer-records cardiac rhythm for a time period of 24 to 48 hours
stress testing

Stress testing - Answer-records and monitors cardiac rhythm during exercise

Phonocardiograph Technicians - Answer-operate equipment used to record abnormal
heart sounds

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