Test 2 Cards 3

Question 1

The function of the circulatory system is to carry what?

Answer 1

blood or hemolymph

Question 2

what is the main pump for blood in the body.

Answer 2

a heart

Question 3

arteries are what?

Answer 3

tough thick-walled vessels that carry blood away from the heart under high pressure

Question 4

what are the capillaries?

Answer 4

vessels whose walls are just one cell layer thick allowing gasses and other molecules to diffuse efficiently with tissues in networks calle dthe capillary beds

Question 5

Veins are what?

Answer 5

vesses that return blood to the heart under low pressure

Question 6

T/F your organs are attatched to muscles in your body?

Answer 6

False they are floating in a bunch of hemolymph

Question 7

in open circulation blood flows through what?

Answer 7

a vessel with muscular thickenings that act as a pump

Question 8

blood leaves the arteries with what kind of flow rate?

Answer 8

a HIGH flow rate

Question 9

resistance is proportional to what flow rate?

Answer 9

1/r^4

Question 10

what is a sphincter?

Answer 10

a pipe that can close and open

Question 11

what is a capillary?

Answer 11

the smallest, thinnest, vessels. walls that are one cell layer thick.

Question 12

what are veins?

Answer 12

pipes that carry deoxygenated blood back to the heart

Question 13

fish ahve what kind of heart?

Answer 13

a 1 circuit, 2 chambered heart.

Question 14

apmphibians have what kind of heart

Answer 14

a two circuit, 3 chambered heart. with mixed pulmonary and systemic circulation

Question 15

birds and mammals have what kind of heart?

Answer 15

a two circuit, 4 chambered heart with separate pulmonary and systemic circulations

Question 16

the left atrium in the heart does what?

Answer 16

contracts, selding oxygenated blood through th eleft AV valve into the left ventricle

Question 17

left ventricle does what?

Answer 17

contracts, sending oxygenated blood throughthe aortic valve into the aorta and systemic circulation circuit