intro to phys Flashcards
1
Q
heart fibers directionality
A
circular, longitudinal, oblique (wring out the heart)
2
Q
Co=
A
HR*SV
3
Q
SV def
A
blood amount ejected per beat
4
Q
Q=
A
deltaP/R
5
Q
TRP def
A
frictional R to blood flow (hard to calculate (series and parallel)
6
Q
MAP def
A
average systolic/ diastolic = mean arterial pressur
7
Q
MAP =
A
DP + (Sp-Dp)/3
8
Q
R=
A
8nl/pir^4
9
Q
main factor in R calc
A
radius!! increase radius, decrease R
10
Q
flow/velocity
A
faster in smaller tubes, slowest with largest cross sectional area,
11
Q
flow changes across system
A
IT DOESNT, IT’S CONSTANT
12
Q
how does dopler work?
A
measure cardiac output, glow, bounce sound waves off RBC
13
Q
what does doppler give you
A
cardiac output-coronary circulation
14
Q
pressure drop is largest in
A
arteriole
15
Q
T=
A
Pr
16
Q
why can smaller r handle higher P?
A
tension equation
