Respiratory system- Respiration And Circulation

Question 1

Gas exchange at alveoli

Answer 1

Oxygen has been removed by working muscles so concentration of blood is low (low partial pressure)

Question 2

Gaseous exchange at the muscles

Answer 2

Oxygen diffuses from the blood capillary to muscle cells- high to low concentration

Question 3

Risks of smoking

Answer 3

Cancers
Leukaemia
Gum disease
Heart disease

Question 4

Benefits of stopping smoking

Answer 4

• Chances of getting cancers are reduced massively

- peripheral artery disease decreases after quitting

Question 5

What is cilia?

Answer 5

Found in the lungs, they are microscopic hair like projections that help to sweep away fluids and particles

Question 6

What is Chronic obstructive pulmonary disease (COPD)?

Answer 6

a group of lung conditions that cause breathing difficulties. It includes: emphysema – damage to the air sacs in the lungs. chronic bronchitis – long-term inflammation of the airways.

Question 7

What is the main cause of Chronic obstructive pulmonary disease (COPD) ?

Answer 7

Smoking, progressive disease of lungs which causes shortness of breathe

Question 8

Impact of smoking on the respiratory system?

Answer 8

Reduces lung infection and increases shortness of breath caused by swelling and narrowing of the lung airways

Question 9

What happens to levels of oxygen and co2 during gaseous exchange?

Answer 9

• You inspire more oxygen at rest than when you expire at rest
• You expire less air during exercise than when at rest by 2.4%
• You expire more co2 at rest than you do inspire at rest
• during exercise is when you expire the most co2