Intro To CVR Flashcards Preview

Pharmacology II Exam 2 (Lauren) > Intro To CVR > Flashcards

Flashcards in Intro To CVR Deck (6)
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1
Q

What happens to the release of Norepinephrine if you stimulate a2 receptor

A

Inhibit the release of NE

2
Q

What happens if you block a2 receptors

A

You increase NE release! (Yohimbine does this)

3
Q

What happens when baroreceptors detect stretch (increased BP)

A

They fire MORE onto the inhibitory interneurons in the brain stem

=decreased SNS output and lower HR

4
Q

What happens if baroreceptors in the carotid detect less stretch (low BP)

A

They fire LESS on the inhibitory interneurons so MORE sympathetic signal gets through = increased HR

5
Q

Which is used for short term regulation: baroreflex or RAAS system

A

Baroreflex. Happens in about 3-5 heart beats

6
Q

What effect do beta blockers have on reflex tachycardia

A

BLOCK it