Thermoregulation - week 7 PBL Flashcards
1
Q
What is homeostasis?
A
biological systems maintaining the body’s internal environment within suitable ranges whilst adjusting to external conditions
2
Q
What is neg and pos feedback?
A
neg - senses change and reverses mechanisms
pos - senses change and continues mechanism
3
Q
What’s considered hypo and hyper thermia?
A
hypo - <35C
hyper > 38.5C
normal 37 +/- 0.5C
4
Q
Describe a temp negative feedback loop?
A
Stimulus (increase temp)
sensor (thermo-receptors in skin)
control centre (hypothalamus)
effector (organ/gland/muscle acts on signal from control centre)
5
Q
How does the body cool down?
A
vasodilation
sweating
6
Q
How does the body warm up?
A
thermogenesis
vasoconstriction
hormonal thermogenesis
