clasp physiology

Question 1

stretch receptos in the bronchi

Answer 1

hering-breur reflex

Question 2

where are central chemoreceptors positioned

Answer 2

surface of medulla

Question 3

what does a central chemoreceptor respond to

Answer 3

H conc

Question 4

what is more sensitive to changes in H, CSF or blood

Answer 4

CSF- less protein, thus less buffering room.

Question 5

hypoxic drive is driven by

Answer 5

low oxygen conc- respnse from peripheral chemoreceptors

Question 6

H drive of respiration

Answer 6

driven by peripheral chemoreceptors.

stimulates hyperventilation and increase elimination of co2 fom the body.

Question 7

stimulants of central chemoreceptors

Answer 7

inc pco2 in arterial blood, inc h in brain

h levels in arterial blood stimulate the peripheral but not the central chemoreceptor

Question 8

action of intercostals on the ribcage

Answer 8

elevates

Question 9

pressures important in respirration

Answer 9

atmospheric
intra-alveolar
intra pleural

Question 10

sympathetic influence over the bonchioles

Answer 10

dilation

Question 11

what defuses across alveoli faster, o2 or co2

Answer 11

co2, 20 times faster

Question 12

resting CO

Answer 12

5l