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Physiological Systems > Heart > Flashcards

Heart Flashcards

1
Q

SA BLOCK

A
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2
Q

AV Blcoock

A
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3
Q

2:1 Atrioventricular block

A
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4
Q
A

Effects of Sympathetic Activity on SA Nodal Cells

Sympathetic stimulation releases norepinephrine and initiates a cyclic AMP 2nd-messenger system which binds to If channels so they remain open longer. More rapid ion entry speeds up rate of the pacemaker depolarization causing cell to reach threshold faster leading to rate of AP

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5
Q
A

Effects of Parasympathetic Activity
on SA Nodal Cells

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6
Q
A

Myopotential Oversensing

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7
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Physiological Systems (24 decks)

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