Gas Exchange and Transport

Question 1

What are the major differences between external and internal respirations

Answer 1

During external respiration, oxygen will diffuse from the alveoli into the pulmonary capillaries.
Internal respiration oxygen will diffuse from the systemic capillaries into the tissue

Question 2

How are gases transported around the body

Answer 2

Oxygen - Plasma and Hb
Cardon Dioxide- Plasma, Carried by Hb inside RBC as Carbaminohemoglobin, bicarbonate ions

Question 3

Define Hypoxia

Answer 3

to little oxygen in the blood

Question 4

Define Hypercapnia

Answer 4

increased concentrations of carbon dioxide

Question 5

Define Haemoglobin

Answer 5

a red protein responsible for transporting oxygen in the blood

Question 6

Define Chemoreceptor

Answer 6

a sensory cell or organ responsive to chemical stimuli

Question 7

How do exercise and ageing affect the respiratory system

Answer 7

Vital Capacity, Blood O2 Level, Alveolar macrophage activity, Ciliary action of Respiratory epithelia