Lecture 4 Content

Question 1

What are the major functions of the circulatory system?

Answer 1

• transporting nutrients and hormones to all tissues
• transportinf waste products away from tissues
• maintain constant temperature across body
• maintain homeostasis of all tissues

Question 2

Blood flows in a circut at a rate of ___

Answer 2

~5L/min

Question 3

Most of the blood in the body is in ____ circulation

Answer 3

Systemic ~85%

Question 4

Blood flow is controlled in reation to ____

Answer 4

Tissue needs

Question 5

Cardiac output is controlled by____

Answer 5

Artery and vein contraction

Question 6

The ____ and pump blood to all organs

Answer 6

aorta and large arteries

Question 7

Arterioles and Capillaries are located ____

Answer 7

within organs

Question 8

Blood flow is the:

Answer 8

quantity of blood that passes a given point in the cirulation in a given period of time

Question 9

blood flow to organs relates to its ______

Answer 9

metabolic needs, not its mass

Question 10

What determined blood flow ?

Answer 10

Ohms Law:
1. the pressure difference
2. the resistence of the vessel