finials

Question 1

What are the main components of the circ sys.

Answer 1

Heart, Blood vessels, blood

Question 2

4 main functions of the circ sys.

Answer 2

Transport, Distributes heat, Maintain sustainable fluid level, Defense against invading orgs

Question 3

Arteries goes ___ from the heart

Answer 3

away

Question 4

Veins goes ___ the heart

Answer 4

towards

Question 5

Arteries branch into ____

Answer 5

arterioles

Question 6

Arterioles branch into ___

Answer 6

Capillaries

Question 7

Capillaries join to form ___

Answer 7

Venules

Question 8

Venules join to form ____

Answer 8

Veins

Question 9

Why do Arteries have thick layered walls?

Answer 9

They experience a lot of blood pressure

Question 10

What is a pulse?

Answer 10

Blood passing through the arteries

Question 11

What is the smallest red blood vessel?

Answer 11

Capillaries

Question 12

____ connects arterioles to venules

Answer 12

Capillaries

Question 13

The site of nutrients/oxygen exchange is called?

Answer 13

Capillaries

Question 14

Small veins are ___

Answer 14

Venules

Question 15

_____ _______ _______ helps push blood up in the veins

Answer 15

Skeletal muscle contractions

Question 16

3 functions of the heart

Answer 16

1. pumps blood through the circ. sys.
2. Separates oxygenated blood and deoxygenated blood
3. Ensures blood only flows one way (no backflow)

Question 17

what happens during stage 1 of the heart?

Answer 17

The heart is relaxed and heart valves are closed

Question 18

What happens during stage 2 of the heart?

Answer 18

Av valves are open and blood rushes into the ventricles

Question 19

what happens during stage 3 of the heart?

Answer 19

Ventricles contract, semilunar valves open, AV valves are closed and blood passes through the arteries

Question 20

what happens during stage 4 of the heart?

Answer 20

Heart is relaxed, the semilunar valves are closed and blood returns to the atria