CO2 (high Concentraction)

Question 1

Stimulus (High CO2 concentration)

Answer 1

High CO2 concentration/low O2 concentration

Question 2

Receptor (High CO2 concentration)

Answer 2

Central chemoreceptors in medulla oblongata and peripheral chemoreceptors in aortic and carotid bodies

Question 3

Modulator (High CO2 concentration)

Answer 3

Respiratory centre in medulla oblongata sends nerve impulse down phrenic and inter-costal nerve

Question 4

Effector (High CO2 concentration)

Answer 4

Diaphragm and inter-costal muscles

Question 5

Response (High CO2 concentration)

Answer 5

Increased rate of breathing=increased exchange diffusion of CO2 out and O2 in

Question 6

Feedback (High CO2 concentration)

Answer 6

Negative