Wk 10 - LE 18: Respiratory (breathing control in exercise)

Question 1

Central chemoreceptors are located where?

Answer 1

In the medulla

Question 2

Peripheral chemoreceptors are located in

Answer 2

Aortic arch and carotid sinus

Question 3

Central chemoreceptors are sensitive to

Answer 3

CO2, H+, NOT O2

Question 4

Peripheral chemoreceptors are sensitive to

Answer 4

Co2, H+, O2, K+

Question 5

The _______ ______ generates the basic respiratory rhythm at rest

Answer 5

Central controller

Question 6

________ ______ syndrome is characterised by a lack of breathing during sleep

Answer 6

Central apnoea

Question 7

The defect of central apnoea syndrome lies in the central ________

Answer 7

Chemoreceptors

Question 8

In children with central apnoea, there is a minimal effect of ____ on breathing at rest

Answer 8

CO2

Question 9

In children with central apnoea, there is a _____ response of breathing during light/moderate exercise

Answer 9

Normal

Question 10

Muscle contraction stimulates _______ neurons which detect changes in mechanical and chemical states (type III and IV neurons)

Answer 10

Sensory

Question 11

The effectors of breathing are

Answer 11

Respiratory muscles and nerve supply

Question 12

The effectors of breathing (Respiratory muscles and nerve supply) are controlled by

Answer 12

Respiratory neurons within the brainstem

Question 13

During sleep the chemoreceptors are critically important, they are extremely sensitive to ____ changes, damage to them will cause cessation in breathing

Answer 13

CO2

Question 14

At rest, _____ has a more powerful effect than ____

Answer 14

CO2, O2