feedback control and other vital signs

Question 1

core body temp

Answer 1

temperature of the blood and internal organs

Question 1

effect of decreased body temperature

Answer 1

slows down cellular mtabilusm and function

Question 2

hypothermia

Answer 2

temperatre below 35

Question 3

hyperthermia

Answer 3

above 40

Question 4

fever

Answer 4

38-40

Question 5

when is temp lowest

Answer 5

early morning

Question 6

whne is temp higher in females

Answer 6

2nd half of cycle

Question 7

heat loss mechanisms

Answer 7

radiation
conduction
convection
evaporation

Question 8

core body temp high effects

Answer 8

heat loss up, heat gain low

Question 9

if core temp low

Answer 9

heat gain high, heat loss low

Question 10

basal metabolic rate

Answer 10

minimum amoutn of energy nrequired to sustain vital body functions

Question 11

what can BMR be increased by

Answer 11

hormones; adrenaline, noradrenaline and thyroxine

Question 12

how does shivering increase heat production

Answer 12

by increasing muscle activity

Question 13

radiation

Answer 13

emission of heat energy i the form of electromagnetic waves from a surface
human body both admits and absrbs

Question 14

conduction

Answer 14

trnsfer of heat betwee onjects in contact

Question 15

in conduction where does heat move

Answer 15

form warmer to cooler

Question 16

convection

Answer 16

transfer of heat via air

Question 17

evaporation

Answer 17

water converted into vapour form skin surface

Question 18

central thermoceptors

Answer 18

in hypothalamus, abdominal organs

Question 19

peirpheral thermoceptors

Answer 19

skin

Question 20

what maintains the temperature at a set point

Answer 20

hypothalamus

Question 21

what is the anterior hypothalamic centre acitvated by

Answer 21

warmth

Question 22

what is the posterior hypothalamic centre activated by

Answer 22

cold

Question 23

what are released in response to infection or inflammaton

Answer 23

chemical macrophages act as an endogenous pyroge

Question 24

endogenous pyforgen example

Answer 24

interleukins

Question 25

role of endogenous pyrogen

Answer 25

stimulate the release of prostag;andins in hypothalamus

Question 26

what do prostaglandins act on

Answer 26

hypothalamic thermo regulatory centre to rests the thermoststa at a higher temperature

Question 27

cold response in fever

Answer 27

hypothalamus initiate mechanims to heat the body - shivering and vasoconstriction to raise new set point

Question 28

fever

Answer 28

body temp increases to reach new set point

Question 29

how is the hypothalamic set point restored

Answer 29

when pyrogen reduced so then cool the body with response