Body - Aerobic

Question 1

What is needed for respiration in the human body?

Answer 1

• Glucose and Oxygen which is carried around the body and into tissues by blood

Question 2

What must blood also carry?

Answer 2

• Away from the body, waste CD away from respiring cells

Question 3

How do these cells move?

Answer 3

• Between respiring cells and tiny blood cells called capilaries by a process called diffusion

Question 4

When does diffusion occur?

Answer 4

• When particles of a substance spread out, moving from an area where they are in a higher concentration to an area where they are in lower concentration

Question 5

Where do the particles diffuse?

Answer 5

• Down a concentration gradient

Question 6

How does the process of Gas Exchange begin?

Answer 6

• Lung tissue which is spongy and full of tiny air sacs (alveoli),
• These sacs are surrounded by capilaries, and oxygen that enters the body through the lungs moves into the body by diffusion

Question 7

How does Carbon Dioxide leave the body? (GE)

Answer 7

• By diffusion into the air spaces. As one gas is entering the blood stream another is leaving it.
• This is the process of GE