Cardiovascular Homeostasis

Question 1

Describe the relationship with MRAP and CO?

Answer 1

…

Question 2

Describe the relationship between MRAP and Venous Return

Answer 2

……..

Question 3

2 points of significance on Venous return graph

Answer 3

at this point MRAP becomes equal to the extravascular pressure and the veins collapse within the thoracic cavity limiting any further increase in venous return

Question 4

Venoconstriction/Blood transfusion

Answer 4

13L/min

Question 5

Inotropic state/decreased after load?

Answer 5

8L/min

Question 6

Exercise

Answer 6

Vascular function and cardiac function change in an integrated fashion so that a 5 to 6 fold increase in cardiac output can be achieved with no change, or even a slight drop, in MRAP

Question 7

Components of the cardiovascular control system

Answer 7

..

Question 8

Renin released in response to?

Answer 8

sympathetic stimulation
decreased P in afferent arterioles
reduced Na at macula densa

Question 9

Effects of angiotensin 2

Answer 9

• ↑ sympathetic
• ↑ aldosterone
• ↑ ADH secretion
• vasoconstriction

Question 10

Where natriuretic peptides made?

Answer 10

..

Question 11

released in response to?

Answer 11

Atrial distension
Angiotensin II
Sympatheic stim

Question 12

effects?

Answer 12

Counter-regulatory system to RAAS

lower BP, BV AND CO
Vasodilation