D3-D4 Flashcards
1
Q
Where is velocity lowest to allow better diffusion?
A
capillaries
2
Q
What factors affect dilation and constriction of blood vessels during blood flow?
A
chemical signals
neural and humoral mechanisms
3
Q
How much blood is in the arteries and capillaries?
A
16%
4
Q
How much blood is in the heart?
A
12%
5
Q
How much blood is in pulmonary circulation?
A
18%
6
Q
How much blood is in venous circulation?
A
54%
7
Q
What 2 things happen in a capillary bed?
A
- the RBCs and plasma are slowed down
- the capillaries are physically close to the tissues they influence
8
Q
What do lymphatics do?
A
help drain tissue back into the subclavian veins and can remove proteins from the interstitial space
9
Q
What is hemodynamics?
A
principles governing the flow of blood through the cardiovascular system
10
Q
What is conductance?
A
how well the blood moves through a vessel
