1. Orga&elles are: 2. Orga&s of the Uri&ary system: kidneys, ureters, urinary bladder, urethra 3. draw a&d label a kid&ey with the followi&g terms: Cortex, Medulla, Pelvis, re&al artery, re&al vei&, ureter, &ephro&: 4. fu&ctio&al u&it of the kid&ey: nephron 1 million per kidney! 5. What parts make ...
BIO 253 FINAL EXAM BANK / 200+ QUESTIONS AND
CORRECT ANSWERS 2023/2024
,BIO 253 FINAL EXAM BANK / 200+ QUESTIONS AND
CORRECT ANSWERS 2023/2024.
1. Organelles are:ans:
2. Organs of the Urinary system:ans: kidneys, ureters, urinary bladder,
urethra
3. draw and label a kidney with the following terms:ans: Cortex,
Medulla, Pelvis,renal artery, renal vein, ureter, nephron:ans:
4. functional unit of the
kidney:ans: nephron1 million
per kidney!
5. What parts make up the nephron?:ans: Renal corpuscleRenal tubule
Glomerulus (capillaries that filter the blood plasma)Bowman's capsule
(surrounds the glomerulus)
Efferent arterioleloop of henle
6. What is the glomerulus made of?:ans: capillaries
7. Function of a nephron:ans: filter blood and produce urine
8. Two nephron types:ans: juxtamedullary and cortical
9. juxtamedullary nephrons:ans: -Long nephron loops deeply invade
medulla
-Ascending limbs have thick and thin segments
-Important in production of concentrated urine
, BIO 253 FINAL EXAM BANK / 200+ QUESTIONS AND
CORRECT ANSWERS 2023/2024.
-found at the boundary of the cortex and medulla
10. cortical nephrons:ans: -85% of all nephrons
-short nephron loops
-efferent arterioles branch into peritubular capillaries around PCT and
DCT
11. How is urine made in the kidney?:ans: 1.)Reabsorption - moving
substances withtubule into the blood.
2.)filtration - occurs in the glomerulus or
renal corpuscle3.)secretion
4.)filtration
12. driving force for filtration:ans: hydrostatic pressure or BP
13. What fluid comes out of the glomerulus?:ans: filtrate
14. What is filtrate?:ans: mostly water, electrolytes, nutrients, and
waste products.Glucose is normal in filtrate.
-similar to blood plasma
15. Reabsorption in the Nephron Loop:ans: Only water is absorbed in the
descendinglimb. Na+ chloride is absorbed in the ascending limb (no
water).
16. Status of water coming out of nephron loop?:ans: @ Lowest
concentration(diluted)
17. Process taking place in nephron loop?:ans: Countercurrent
mechanism (dilutesthe urine). Can also create concentrated urine from
the Na+ absorbed in the ascending limb.
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