Exam 4 - Overview & Hemodynamics

Question 1

What are the 2 primary functions of the CV system?

Answer 1

transport and delivery

Question 2

What does the CVS deliver?

Answer 2

Nutrients and other substances such as O2, glucose, AAs, FAs, H2O, electrolytes, hormones.

Question 3

What does the CVS remove?

Answer 3

Wastes such as CO2, lactic acid, nitrogenous wastes, heat

Question 4

At what rate must removal of wastes occur?

Answer 4

At an adequate rate

Question 5

What 4 things are necessary to provide what the body’s tissues require?

Answer 5

1. Transport medium (blood)
2. Efficient transport system (vessels)
3. Pump (heart)
4. Regulatory system (ANS, hormones)

Question 6

What 3 things do the blood vessels do and what type of vessel does each?

Answer 6

1. Delivery (arteries)
2. Distribution (capillaries)
3. Return (veins)

Question 7

What 2 things does the pump (heart) do?

Answer 7

1. Provides energy to drive blood flow

2. Perfusion pressure

Question 8

What is bulk flow?

Answer 8

Blood flow through vessels that is rapid (seconds) and over a long distance.

Question 9

What provides the energy needed for bulk flow?

Answer 9

Perfusion pressure

Question 10

What is perfusion pressure?

Answer 10

Hydrostatic pressure difference from beginning to end of circuit.

Question 11

What generates perfusion pressure?

Answer 11

heart’s pumping activity

Question 12

Are perfusion P and transmural P the same/

Answer 12

No

Question 13

What is another name for transmural P?

Answer 13

distending P

Question 14

What is diffusion?

Answer 14

Primary way dissolved substances move across vessel (capillary) walls from blood to interstitial fluid and vv.

Question 15

Diffusion is a _____ and _____ process.

Answer 15

Passive, slow

Question 16

What is the driving force of diffusion?

Answer 16

[ ] difference

Question 17

Which way do substances move?

Answer 17

higher to lower [ ]