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Flashcards in last minute facts Deck (33)
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1

muscle type that uses gap junctions

cardiac and smooth

2

side effect of prazosin

orthostatic hypotension

3

preload and after load do not affect

vmax

4

what affects vmax

ATPase activity

5

channels responsible for propagation of action potential in sk muscle

Na

6

channels responsible for initiation of action potential in sk muscle

Ca

7

Cardiac output =

SV x HR

8

each little box on EKG represents

0.04 s

9

each big box on EKG represents

.2 s

10

depolarization of SA node causes infux of

Ca. ( not Na like most tissues )

11

phase 4 of SA node is due to

T type Ca channels

12

phase 0 of SA node is due to

funny channel closing, L type Ca channels open. Influx of Ca

13

membrane potential at phase 0 of SA node

-40

14

phase 3 of SA node

K channels open and Ca channels close

15

cutting vagus nerve to the heart would result in

tachycardia (100bpm)

16

P-R interval time

.12 s

17

QRS time

.12 s

18

ventricular systole happens where on EKG

Q-T interval

19

P-R interval longer than .2s

1st degree AV block

20

gradual lengthening of P-R interval until QRS vanishes

mobitz 1/ 2nd degree AV block

21

P-R interval is constant but every #th QRS is missing

mobitz 2

22

Adenosine dilates everywhere except

Renal

23

Capillary flux equation

J=k[(Pc-Pi)-(pc-pi)]

24

SV=

EDV-ESV

25

EF=

SV/EDV

26

volume of distribution

dose/dose free in plasma

27

Crescendo-decresendo murmur

Aortic stenosis or pulmonary stenosis

28

Mid ejection click murmur

Mitral prolapse

29

Early diastolic decrease do

Aortic or pulmonic regurge

30

Opening snap and mid diastolic rumble

Mitral stenosis