venous hemodynamics Flashcards
1
Q
the weight of a column of blood
A
hydrostatic pressure
2
Q
pressure when supine
A
15mmHg
3
Q
pressure when standing
A
110mmhg
4
Q
pressure when walking
A
25mmhg
5
Q
difference between intraluminal and intersitital pressures
A
transmural
6
Q
determines cross sectional shape of vein
A
transmural pressure
7
Q
what happens to diaphragm with inspiration and expiration
A
goes down with insp, up with exp
8
Q
on inspiration, intra abdominal pressure…
A
increases
9
Q
on inspiration, intrathoracic pressure..
A
decreases
10
Q
how much pressure is generated with a calf pump
A
200mmHg
11
Q
perforating. veins direct flow from….
A
superficial to deep veins
12
Q
which angle detects no doppler shift
A
angle of 90
