09. Homeostasis and hormonal control

Question 1

what is homeostasis

Answer 1

homeostasis is the maintenance of a constant internal environment

Question 2

examples of homeostasis in humans

Answer 2

1) regulating body temperature
2) regulating water potential of blood and tissue fluids
3) regulating blood glucose concentration

Question 3

why does our body temperature have to be regulated?

Answer 3

one of the reasons to keep constant body temperature is cuz enzymes only work in a specific temp range, change in temp may cause enzyme inactivation or denaturation. which can be fatal to body

Question 4

why does water potential of blood and tissue fluids need to be regulated?

Answer 4

blood plasma and tissue fluids have to be kept within narrow limits to ensure constant water potential. Higher than normal WP causes cells to expand and burst. Lower than normal WP causes cells to crenate

Question 5

normal blood glucose level

Answer 5

70-90 mg of glucose per 100 cm^3 of blood