Science Medicine
Bio 151 Exam 3 UW Madison |2025 Update Comprehensive
Frequently Tested Questions And Verified Answers |100%
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What is necessary in Negative feedback
maintaining homeostasis?
Horomones Chemicals made by tissues to get secreted in the blood and act
on other tissues
How are testosterone levels Negative feedback using a hormonal response to change the
regulated? levels
What does almost all of the The hypothalamus talking to the pituitary
physiological control?
GnRH in both males and females (increase in GnRH
What regulates the anterior
pituitary? causes the A pituitary to be stimulated)
What does the A pituitary LH and FSH
release?
Into systemic circulation, and then into the Leydig cells
When the A pituitary
in the testes to stimulate testosterone to stimulate
releases LH, where does it
spermatogenisis and stimulates ovulation by turning the
go?
dominant follicle into the corpus luteum to produce
progesterone
What do the Testes release Testosterone into circulation and into the testes to create the
when their leydig cells are male germ cells
activated?
When testosterone is Back to the androgen receptors in the hypothalamus to
released into circulation, turn off production of GnRH (negative feedback)
where does it go?
What is the ranking for Glucogen in the liver is first, then in muscle cells, and then fat cells
using up stored energy?
Glucose homeostasis depends Opposing effects of insulin and glucagon
on...
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, 6/7/25, 12:57 AM Bio 151 Exam 3 UW Madison |2025 Update Comprehensive Frequently Tested Questions And Verified Answers |100% Accurate An…
High: Insulin secreted so that glucose is taken out of
What happens if blood
the blood and into the rest of the body
glucose levels are high vs
Low: Glucagon secreted to release glucose into the blood from
low? the liver
What does the pancreas Alpha:
produce and with which glucose
cells? Beta: Insulin
1. Testosterone negatively regulates the
Which 2 negative feedback
hypothalamus' and ap's release of GnRH, FSH, LH
loops control sex horomone
2. Inhibin negatively regulates ap's secretion of FSH
production in male?
Difference between Negative regulates and inhibits and original stimulus=
negative and positive returns it to the original state Positive reinforces a
feedback? stimulus and leads to a greater response
How does the Increasing the temperature in the hypo causes a decrease in the
hympolthalamus regulate rest of the body
body temperature?
Ingestion happens where and Oral cavity, uses salivary glands
does what
Breaks down food for the body to absorb
1. Mechanical digestion (mouth chewing and amylase and stomach
Digestion happens where and peristalsis)
does what 2. Chemical digestion: processes food and uses acid
hydrolysis to break food down, mainly proteins
(stomach using chyme)
Majority of digestion happens in small intestine
Absorption The duodenum in the small intestine absorbs amino acids and
sugars
Takes undigested materials out and uses accessory glands to
secrete digestive juices
Elimination 1. Salivary glands
2. Pancreas
3. Liver and gall bladder
Acid hydrolysis happens Stomach only, the unfolding of proteins so that enzymes can
where attack
Enzyme hydrolysis happens Mouth, stomach, small intestine and its just breaking food
where molecules down
What does the pancreas Bicarbonate enzymes to neutralize
release?
What does the liver produce? Bile into gall bladder
What does the gall bladder Puts bile into the small intestine
do?
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