Thermoregulation - week 7 PBL

Question 1

What is homeostasis?

Answer 1

biological systems maintaining the body’s internal environment within suitable ranges whilst adjusting to external conditions

Question 2

What is neg and pos feedback?

Answer 2

neg - senses change and reverses mechanisms

pos - senses change and continues mechanism

Question 3

What’s considered hypo and hyper thermia?

Answer 3

hypo - <35C
hyper > 38.5C

normal 37 +/- 0.5C

Question 4

Describe a temp negative feedback loop?

Answer 4

Stimulus (increase temp)
sensor (thermo-receptors in skin)
control centre (hypothalamus)
effector (organ/gland/muscle acts on signal from control centre)

Question 5

How does the body cool down?

Answer 5

vasodilation
sweating

Question 6

How does the body warm up?

Answer 6

thermogenesis
vasoconstriction
hormonal thermogenesis