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BIO 2301 HUMAN PHYSIOLOGY LECTURE EXAM 4 QUESTIONS AND VERIFIED ANSWERS

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BIO 2301 HUMAN PHYSIOLOGY LECTURE EXAM 4 QUESTIONS AND VERIFIED ANSWERS

Institution
BIO 2301
Course
BIO 2301

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Barrier methods or birth control


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- Condom, diaphragem, cervical cap
- Prevent the entry of sperm into the female tract




When ADH is present in the collecting ducts, then ducts have ______ permeability and
water ______ reabsorbed. This results in ____ urine.


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- high
- will be
- concentrated

,What happens when the kidneys are saving H+ (like in alkalosis)?


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Then you will lose K+ in the urine




Micelles


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- Solublize fat in the chyme
- "Shuttle buses" to transport the fat through the chyme to the absorptive
surface of the epithelial cell in the small intestine
- Consist of free fatty acids, monoglycerides, fat soluble vitamins,
cholesterol, bile salts, and lecithin
- When the micelle reaches the epithelial cells, fat leaves the micelle and
enters into it
- Once inside, monoglycerides and free fatty acid combine to form
triglycerides
- Triglycerides combine with other substances to form chylomicrons




Short term cardiovascular adjustments to manage BP


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, - If baroreceptors detect low BP, the body will increase heart rate, increase
stroke volume, and increase total peripheral resistance (vasoconstriction) =
sympathetic responses
- If baroreceptors detect high BP, the body will decrease heart rate and
decrease total peripheral resistance (vasodilation)




Renin secretes angiotensin II - how does that increases BP?


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Causes vasoconstriction and the release of aldosterone which increases BP




Behavior methods or birth control


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- Rhythm method: woman keeps track of when she ovulates and avoids
intercourse during this time
- Monitoring cervical mucus: during ovulation, the cervical mucus and thin
and slippery - avoid intercourse




What happens if GFR goes above normal?


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, Everything rushes through the nephron so quickly that you don't have time
to reabsorb and you end up losing substances in the urine that you want to
keep




What happens if GFR goes below normal?


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Everything moves through the nephron so slowly that you have time to
reabsorb more than usual and you end up saving waste products in the
blood




What substances are secreted at the distal convoluted tubule?


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- Organic molecules (drugs like penicillin)
- Potassium
- Sodium
- Hydrogen ions




What causes the development of secondary sexual characteristics?


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Increased testosterone in the male and increased estrogen in the female

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Institution
BIO 2301
Course
BIO 2301

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Uploaded on
December 17, 2025
Number of pages
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Written in
2025/2026
Type
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Questions & answers

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