CSV physiology 8

Question 1

what hapens is map is too high

Answer 1

hyperntinos

Question 2

what hapesn if map is to low

Answer 2

syncope/ faiting

Question 3

whear are the cartoid sinus baroreceptors found

Answer 3

comon cartoid arteries, just before the bifuatoin of interlca caroit arters and arotic arch

Question 4

what happens when the barcorecpots detect a change in blood pressure

Answer 4

incfease firing rate

Question 5

are barorecptor always firing

Answer 5

yes

Question 6

what happesn to the sympathic system if there is an increase in firing rate

Answer 6

reduced sympathic outflow, thus arlies smooth musle vascodilation, reduced heart rate and reduced force of contraion

Question 7

what happesn to the parasymphtai syem if ther is a increase in firing rate of baroreptors

Answer 7

reduced herat rate, reduced cardiac output

Question 8

what is the central chemorecotrs juction

Answer 8

sending pc02 and p02

Question 9

what is te rose of chemorectpros in musle

Answer 9

sending metabolie conetiaon

Question 10

what is the role of joint receptors

Answer 10

sensing joint movement

Question 11

what is the role of higher centres and what are they

Answer 11

hypiothoalums and cerabl cortex

Question 12

what is the valsalve manover

Answer 12

forced expiration agaist a closed glostis to increase abdominal pressure

Question 13

what are examples of the valsalve manoevour

Answer 13

going to the toilet, weight lifting, clearing ears

Question 14

what is stage one of te valsal manour

Answer 14

an increa sin blood presure thought to the aorta

Question 15

what is stadge two of the valsal manough

Answer 15

thoraci pressure redc eand the filling pressure into veins, this reduces vr, edv, sv, co and mapwhat is the

Question 16

late stage 2 of the valsava manouver

Answer 16

the decrease in th ma is deted by the barorecpros and an relesx increase co and tpr

Question 17

what is stadge 3 of the valsava manover

Answer 17

the end of the manover - ther is a decrea in toracic presssue, this is transmitted through the the aorta

Question 18

what is stage 4 of the valsa manovur

Answer 18

vr is restore so sv incread, but relex effecs have not worn off

Question 19

which cgoru canhte valasalve menough be redued in

Answer 19

old peopl and those with autonomic neuropathy

Question 20

what nerve passoe baoyrecopr signal frm the aorti arch to the medullary centers

Answer 20

vagus

Question 21

what nerve passes signal from the caroti arti barorecptrs to the medullary centre

Answer 21

glossopharyngeal nerve