musch 2 Flashcards
1
Q
what is the ~width of a capillary?
A
6 microns
2
Q
what are the regulators of flow and constriction?
A
arterioles
3
Q
where is the largest pressure drop in the cardiovascular system?
A
in the capillaries
4
Q
where is resistance greatest?
A
in the arterioles
5
Q
alpha-1 receptors are where?
A
large arterioles
6
Q
alpha-2 receptors are where?
A
small arterioles
7
Q
Fick Equation
A
VO2 = Q x avO2
8
Q
what does Q = ?
A
HR x SV
9
Q
what does avO2 = ?
A
CaO2 - CvO2
10
Q
where is CaO2 taken from?
A
any systemic artery
11
Q
where is CvO2 taken from?
A
only from the pulmonary artery
12
Q
what does reduction in arterial radius produce?
A
a reduction in flow
