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Human Physiology PB > Test 2 Chapter 9 Cardiovascular System Pt. 2 > Flashcards

Test 2 Chapter 9 Cardiovascular System Pt. 2 Flashcards

1
Q

Describe the heart?
-Muscle

  • Electrically excitable?
  • Mechanically Excitable?
A

Myocardium

-Yes Yes

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2
Q

What is an EKG?

A

A collection of all of the action potentials of every myocardial cell in the heart

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3
Q

Compare the twitch timing in muscle types

A

Skeletal 100ms

Cardiac 300ms

Smooth 3000ms

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4
Q

In the heart

Electrical event?

Mechanical Event?

A

Electrical Event= EKG

Mechanical Event=Twitch=Beat

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5
Q

In the heart 1 AP results in

A

1 twitch/beat of myocardium

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Human Physiology PB (9 decks)

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