External&internal Respiration

Question 1

Where does external respiration take place?

Answer 1

Lungs

Question 2

What are involved in external respiration?

Answer 2

Alveoli and blood

Question 3

Where does oxygen and carbon dioxide move from and to during external respiration?

Answer 3

O2-from alveoli to blood

CO2-from blood to alveoli

Question 4

How does CO2 move?

Answer 4

There is a higher ppCO2 in the blood than alveoli, so CO2 travels down the diffusion gradient to the alveoli

Question 5

How does O2 move?

Answer 5

There is a higher ppO2 in the alveoli than blood, so the O2 travels down the diffusion gradient into the blood

Question 6

Where does internal respiration occur?

Answer 6

In the muscles

Question 7

What are involved in internal respiration?

Answer 7

Muscles and blood

Question 8

Where does O2 and CO2 move from and to in internal respiration?

Answer 8

O2-blood to muscles

CO2-muscles to blood

Question 9

How does O2 move in internal respiration?

Answer 9

There is a higher ppO2 in the blood than muscles, so O2 travels down the diffusion gradient into the muscles

Question 10

How does CO2 move in internal respiration?

Answer 10

There is a higher CO2 in the misled than blood, so CO2 travels down the diffusion gradient to the blood

Question 11

Define Gaseous Exchange

Answer 11

The movement of oxygen and carbon dioxide at the lungs and at the muscles by the process of diffusion

Question 12

What is diffusion?

Answer 12

The move my of a gas down a diffusion gradient from an area of high partial pressure to low partial pressure

Question 13

What is diffusion gradient?

Answer 13

The difference between the areas of high pressure and low pressure

Question 14

What is partial pressure (pp)?

Answer 14

The pressure a gas exerts within a mixture of gases