week 8

Question 1

whats the core temp

Answer 1

36.5-37.5

Question 2

core temp definition

Answer 2

temp of blood in hypothalamus in the thermoregulatory center of the body

Question 3

ways to check temp thats not oral

Answer 3

tympanic, esophagus and rectal, stomach - telemetry pill

Question 4

what is the skin temp

Answer 4

32 - 35

Question 5

what monitors the body’s temp

Answer 5

thermoreceptors

Question 6

what do efferent control do for the bodys temp

Answer 6

blood vessels dilation, glands, shivering - for too hot or too cold

Question 7

voluntary muscular activity example for being too cold

Answer 7

shivering

Question 8

what is thermogenesis?

Answer 8

the production of heat within animal or human body

Question 9

thermogenesis is used for what

Answer 9

heat balance/ regulation

Question 10

biophysical properties effect heat loss - name examples

Answer 10

convection, conduction, - water, air, wet or dry atmosphere

Question 11

why don’t people sweat in humid climates

Answer 11

water cant leave the skin into the air due to high humidity levels

Question 12

clothing effects heat loss - true or false

Answer 12

true

Question 13

core temp needs to what

Answer 13

stay within a limited range

Question 14

where does heat lose come from mostly

Answer 14

shell / skin

Question 15

skin temp is regulated true or false

Answer 15

false

Question 16

what is the most powerful response for helping control body temp

Answer 16

behavioral

Question 17

what performance is impacted in hot and humid conditions

Answer 17

aerobic

Question 18

what is increased in demand in hot environments

Answer 18

heat loss mechanisms- sweating, blood flow

Question 19

in hot environment - what is reduced

Answer 19

the gradient between core and skin

Question 20

in heat - dehydration is a problem due to fluid loss - true or false

Answer 20

true

Question 21

heat causes a decrease in sweat rate and plasma volume because of

Answer 21

dehydration

Question 22

cardiac output, maximal o2 uptake and muscle strength decreases or increases during heat

Answer 22

decreases

Question 23

work capacity during heat is

Answer 23

decreased

Question 24

hiie is impacted by heat because…

Answer 24

Blood flow is compromised due to muscle and thermoregulation between muscle and skin

Question 25

heat related changes in skeletal muscle function and metabolism causes

Answer 25

hiie to be impaired

Question 26

impacts of the heat on you - warning signs

Answer 26

thrist, lots of sweating, fatigue, headache, nausea, chills or goosebumps, faitness

Question 27

heat illness signs

Answer 27

heat cramps, heat exhuastion, heat stroke, confusion, hot and dry skin, rapid pulse.

Question 28

how should athletes prepare for training in heat

Answer 28

train in heat - aerobic specifically and immediately post - pre-cooling - improving hydration status

Question 29

examples of acclimatization's...(8)

Answer 29

improved blood flow, lower threshold for sweating, more effective distribution of sweat, less salt conc of sweat, lower skin core temps , less reliance on cho catabolism

Question 30

the effect of blood flow on body

Answer 30

transports heat from deep tissue

Question 31

the effect of more effective cardiac output

Answer 31

circulation to skin and muscles to meet demands and better bp stability during exercise

Question 32

effect of lower sweat threshold

Answer 32

evaporative cooling

Question 33

effect lower salt in sweat

Answer 33

preserving electrolytes

Question 34

effects of lower core and skin temo and hr

Answer 34

allows for blood flow to muscles

Question 35

effects of less reliance on cho

Answer 35

spare cho

Question 36

cold stress is what temp for the core

Answer 36

below 35 or 95 F

Question 37

2 degree drop in cold will cause what

Answer 37

associated with maximal shivering

Question 38

4 degree drop in core temp will cause what

Answer 38

ataxia and apathy

Question 39

6 temp core drop will cause

Answer 39

unconscious

Question 40

what occurs over 6 degree drop in temp

Answer 40

ventricular fib, reduced brain flow, asystole and death

Question 41

responses to cold during exercise - physiological - not shivering and blood flow

Answer 41

increased submaximal vo2 and capacity in water - due to heat loss, increased lactate, lower hr, release of leptin from adipose, lower lipid mobilisation,

Question 42

cold - why is there a lower lipid mobilization

Answer 42

reduced blood to adipocytes

Question 43

what causes decreased hr during submaximal exercise in cold

Answer 43

increased central blood volume for heating core

Question 44

why increased blood volume in the core in cold

Answer 44

peripheral vascocontriction

Question 45

why the release of leptin during cold from adipose

Answer 45

increased sympathetic stimulation

Question 46

effects of increased lactate concentration

Answer 46

due to increased cho metabolism

Question 47

exercise in cold environment results in what

Answer 47

shivering threshold is lowred due to heat production and improved peripheral blood flow to hands and feet and sleep in cold