Animals (6)- Function of respiration

Question 1

Four stages in human respiration

Answer 1

Breathing, external respiration, internal respiration, cellular respiration

Question 2

Two main req. for respiration

Answer 2

respiratory surface and ventilation

Question 3

respiratory surface

Answer 3

must be large enough for the exchange of o2 and co2 to occur quickly enough for the bodies needs

Question 4

ventilation

Answer 4

moving an oxygen containing medium (water or air) over the respiratory surface (gills, trachea, lungs)

Question 5

3 types of resp in animals

Answer 5

outer skin, gills, tracheal system

Question 6

outer skin resp

Answer 6

use entire outer skin to diffuese oxygen into thin walled cappillaries below the skin

Question 7

gills

Answer 7

oxygen from water diffuse across the gill surfaces into capillaries.

Question 8

tracheal system

Answer 8

internal system of branching respiratory tubes called tracheae. connect body cells directly to the environment for oxygen to diffuse into spiracles

Question 9

3 steps of ventilation in humans

Answer 9

brain= respiratory control centre. diaphragm=changes air pressure. Intercostal muscles = found in between ribs, lift and pull ribcage outward.

Question 10

tidal volume

Answer 10

volume of air inhaled and exhaled in a normal breath at rest

Question 11

inspiritory reserve volume

Answer 11

additional volume of air that can be taken into lungs beyond tidal breath

Question 12

expiratory reserve volume

Answer 12

additional volume of air that can be forced out of lungs

Question 13

vital capacity

Answer 13

total lung capacity. tidal volume + inspirtory reserve +expiratory reserve

Question 14

residual volume

Answer 14

amount of gas that remains in the resp system even after exhale.