The body's automatic tendency to maintain a constant internal environment is termed - ANSWER homeostasis
Which of the following is NOT an example of a negative feedback that would result in homeostasis? - ANSWER an increase in the elngth of daylight causes brown fat in hibernating bats to increa...
BIO 200 Final exam QUESTIONS &
ANSWERS
The body's automatic tendency to maintain a constant internal environment is termed - ANSWER
homeostasis
Which of the following is NOT an example of a negative feedback that would result in homeostasis? -
ANSWER an increase in the elngth of daylight causes brown fat in hibernating bats to increase their heat
output, which increases body temperature of bats
hormones - ANSWER circulate via blood hemolymph
affects specific cells with appropriate receptors
local regulators - ANSWER communication between neighboring cells
neurotransmitters - ANSWER communication between nerves across synapses
pheromones - ANSWER communication between individuals across environment
endocrine system - ANSWER less fast, lasts longer, hormones
nervous system - ANSWER fast response, short, neurotransmitters
water soluble hormones - ANSWER in/inactive enzymes
, change uptake/secretion
DNA transcription rate
cytoskeleton arrangment
lipid-soluble hormones - ANSWER move through membrane via diffusion
receptors inside cell
feedback loop - ANSWER e.g. liver
glucagon and insulin
people with type I diabetes take insulin after meals to help maintain their blood sugar levels.
Automatically, such diabetics suffer from... - ANSWER damaged pancreatic cells that do not respond well
to high glucose levels
monitoring and control - ANSWER blood pH, blood temp, and seasonal changes via the hypothalamus
In kidneys, which homrone is most effective at causing increased number of aquaporins to be present in
collecting duct epithelia, and what is the source of this hormone? - ANSWER ADH; posterior pituitary
gland
posterior pituitary - ANSWER neural connection to hypothalamus
oxytocin and antidiuretic hormone
oxytocin - ANSWER lactation, uterine contractions, mood and sexual arousal
antidiuretic hormone - ANSWER degree of urine concentration
tropic hormones - ANSWER in anterior pituitary, signals production of other hormones
anterior pituitary - ANSWER circulatory/hormonal connection to hypothalamus (releasing vs. inhibiting)
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