Blood In the Body

Question 1

Gaseous exchange

Answer 1

The movement of oxygen from the air into the blood, and carbon dioxide from blood into the air

Question 2

Diffusion

Answer 2

the net movement of molecules from an area of high concentration to an area of low concentration along a pressure gradient

Question 3

cardiovascular drift

Answer 3

Increases heart rate - decreases stroke volume - occurs after 10 min (in warm conditions) - caused by thickening of blood/loss of water through sweat - reduced venous return - maintain/increase cardiac output - aims to cool the body

Question 4

Veins

Answer 4

Carry blood to the heart

Question 5

Arteries

Answer 5

carry blood away from the heart

Question 6

Capillaries

Answer 6

The smallest blood vessels, and the site of exchange of chemicals and water between the blood and the tissues

Question 7

Systole

Answer 7

contraction of heart

Question 8

Diastole

Answer 8

Relaxation of Heart

Question 9

Pocket Valves

Answer 9

ensures blood flows in 1 direction & prevents back flow

Question 10

Myoglobin

Answer 10

stores oxygen in the muscles