Control of Respiration

Question 1

What are the two types of cell found in the Medullary Respiratory Center? What type of receptors are found?

Answer 1

Inspiratory - Rhythmic firing AP, (external, intercostals / diaphragm)
Expiratory - Fires when needed (internal intercostals)
STRETCH receptors via, Vagus Nerve

Question 2

What are stimulates respiration (4) Rank

Answer 2

Exersize
COz
pH
Partial pressure of Oz

Question 3

When do Peripheral Chemoreceptors kick in (3)

Answer 3

at really low Pa-Oz
During Chronic COz retention, COz get buffered in the cerebral spinal fluid –> inactivates central chemoreceptors,
Peripheral chemoreceptors take over, if given high Oz, respiration can be drastically reduced, because peripheral receptors increase ventilation and low POz, and decrease when too POz high