GAS EXCHANGE

Question 1

What is the circulatory system responsible for?

Answer 1

Transports nutrients and gases through the body

Question 2

How is the circulatory system functionally linked in most animals?

Answer 2

Linked to the exchange of gases with the environment and with body cells

Question 3

What does the circulatory system transport in vertebrates?

Answer 3

Transports gases between the lungs and the rest of the body

Question 4

What parts does the circulatory system have?

Answer 4

1. A circulatory fluid
2. Interconnecting vessels
3. A muscular pump (heart)

Question 5

What is the circulating fluid in open circulatory systems?

Answer 5

Hemolymph (mixture of blood and interstitial fluid)

Question 6

What happens when the heart contracts in an OPEN circulatory system?

Answer 6

Pumps the hemolymph through vessels into sinuses

Question 7

What happens when the heart relaxes in an OPEN circulatory system?

Answer 7

Draws the hemolymph back in through pores

Question 8

What is the fluid in a closed circulatory system?

Answer 8

Blood ONLY (confined to vessels)

Question 9

What costs more energy: an OPEN circulatory system or a CLOSED circulatory system?

Answer 9

a CLOSED circulatory system

Question 10

True or False: a closed circulatory system produces a lower blood pressure

Answer 10

FALSE

Question 11

How does a closed circulatory system allow for larger/more active animals to move?

Answer 11

Regulates distribution of blood to different animals

Question 12

What is it?

This part carries oxygenated blood from the heart to the organs throughout the body.

Answer 12

Arteries

Question 13

What is it?

Arteries then branch into ?

Answer 13

Arterioles