Types Of Respiration

Question 1

What is external respiration?

Answer 1

Exchange of gases between the blood and lungs (air)

Involves ‘pulmonary capillaries’ carrying blood around alveoli and includes inhalation and exhalation, known as ‘ventilation’.

Question 2

What is the role of pulmonary capillaries in external respiration?

Answer 2

They carry blood around alveoli

This process facilitates the exchange of gases between blood and air in the lungs.

Question 3

What is internal respiration?

Answer 3

Exchange of gases between blood and cells

This process occurs at the systemic capillaries.

Question 4

What is cellular respiration?

Answer 4

energy (ATP) is obtained by metabolising carbohydrates, fats, and proteins

This process is essential for cellular functions and energy production.

Question 5

Fill in the blank: The process of breathing in and out is referred to as _______.

Answer 5

‘ventilation’

Ventilation is a key component of external respiration.

Question 6

What gases are exchanged during internal respiration?

Answer 6

Oxygen (O2) and carbon dioxide (CO2)

This exchange occurs at the systemic capillaries where oxygen is delivered to cells and carbon dioxide is removed.

Question 7

True or False: External respiration occurs in the tissues.

Answer 7

False

External respiration takes place in the lungs, while internal respiration occurs in the tissues.

Question 8

What is the primary function of the pulmonary artery?

Answer 8

Carries deoxygenated blood from the heart to the lungs

This is essential for the process of external respiration.

Question 9

What is the primary function of the pulmonary vein?

Answer 9

Carries oxygenated blood from the lungs to the heart

This blood is then pumped to the rest of the body for internal respiration.