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BIO 220 FINAL EXAM QUESTIONS WITH COMPLETE ANSWERS

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BIO 220 FINAL EXAM QUESTIONS WITH COMPLETE ANSWERS

Institution
BIO 220
Course
BIO 220

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why are eggs so large in comparison to sperm?


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to have enough nutrients to allow embryo to last a week to get to
implantation site


also to supply mRNA to provide instructions for developing embryo




dartos fascia


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smooth muscle which is underneath the subcutaneous layer of this skin,
also contracts when cold and relaxes when warmer

helps elevate or lower the scrotum

, REDUCES/ENLARGES SURFACE AREA


wrinkles the scrotal sac




amygdala in urinating


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why animals urinate when they are frightened




A patient is exhibiting abdominal pain and is having issues associated with urine
output. An ultrasound and MRI indicate a kidney is "floating" free in the abdomen (yet
still attached to the ureter). What could the issue be due to?


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Damaged fibrous connective tissue (it holds the kidneys in place near
abdominal wall)




takes _ days for an egg to mature?


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290




what can be caused from polycythemia?

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cancer of bone marrow

dehydration, smoking, high altitudes, excessive exercise




when a blood vessel breaks, what happens?


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platelets attach to now exposed collagen fibers and more platelets gather
around the tear to pull vessel walls together with their pseudopods

POSITIVE FEEDBACK




proliferative phase


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Days 5-13. Occurs during mid to late follicular phase. Menstrual flow
ceases, endometrium thickens due to regeneration by Estrogen increase up
through the time of ovulation.




osmoreceptors in hypothalamus


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, detects amount of water in the blood

promotes the release of ADH or not




collecting duct


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renal pyramids are made of thousands of these

multiple nephrons empty into one collecting duct

concentrates urine




sickle cells can?


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agglutinate and clump together


they block small blood vessels and lead to heart failure, kidney failure and
joint pain




how does loop of Henle concentrate?


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Institution
BIO 220
Course
BIO 220

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