Exchange And Transport

Question 1

Why is a specialized system for gas exchange needed?

Answer 1

To get oxygen for respiration, remove co2 and increase diffusion rate

Question 2

Why is co2 bad in the blood

Answer 2

Changed ph of blood so proteins denature

Question 3

Factors that effect rate of diffision in human gas exchange

Answer 3

Blood supply ( creating steep conc gradient) ventilation, moist surfaces

Question 4

What is the pleura

Answer 4

Space between the double membrane, filled with pleura fluid which lubicates lungs

Question 5

Nasal cavity role in gas exchange

Answer 5

Blood warms air, mucus traps particles, humidifies air to protect more delicate structures in lungs

Question 6

Trachea role in gas exchange

Answer 6

Funnels inhaled air to lungs and exhaled air out if body

Question 7

External intercostal muscles during inspiration

Answer 7

Contract

Question 8

External intercostal muscles during expiration

Answer 8

Relaxing (passive)

Question 9

Internal intercostal muscles during inspiration

Answer 9

Relaxing

Question 10

Internal inter costal muscles during expiration

Answer 10

Contracting

Question 11

Diaphragm during inspiration

Answer 11

Contracts ( flattens)

Question 12

Diaphragm during expiration

Answer 12

Relaxes ( curves )

Question 13

Air pressure in lungs during inspiration

Answer 13

Decrease

Question 14

Air pressure in lungs during expiration

Answer 14

Increases

Question 15

Air movement along pressure gradient during inspiration

Answer 15

Into lungs (high to low)

Question 16

Air movement along pressure gradient during expiration

Answer 16

Out of lungs (low to high)

Question 17

Lung volume during inspiration

Answer 17

Increases

Question 18

Lung volume during expiration

Answer 18

Decreases