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Exam (elaborations)

Bio 253 final exam questions and answers already graded A+ 2024/2025

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  • BIO 253

Bio 253 final exam questions and answers already graded A+ 2024/2025

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  • September 7, 2024
  • 13
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • bio 253
  • BIO 253
  • BIO 253
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Ashley96
Bio 253 final exam

Organelles are - ANS

Organs of the Urinary gadget - ANSkidneys, ureters, urinary bladder, urethra

draw and label a kidney with the following terms: Cortex, Medulla, Pelvis, renal artery, renal
vein, ureter, nephron - ANS

functional unit of the kidney - ANSnephron
1 million in keeping with kidney!

What parts make up the nephron? - ANSRenal corpuscle
Renal tubule
Glomerulus (capillaries that filter out the blood plasma)
Bowman's tablet (surrounds the glomerulus)
Efferent arteriole
loop of henle

What is the glomerulus fabricated from? - ANScapillaries

Function of a nephron - ANSfilter blood and convey urine

Two nephron sorts - ANSjuxtamedullary and cortical

juxtamedullary nephrons - ANS-Long nephron loops deeply invade medulla
-Ascending limbs have thick and skinny segments
-Important in production of concentrated urine
-located on the boundary of the cortex and medulla

cortical nephrons - ANS-85% of all nephrons
-quick nephron loops
-efferent arterioles department into peritubular capillaries around PCT and DCT

How is urine made within the kidney? - ANS1.)Reabsorption - moving materials with tubule into
the blood.
2.)filtration - occurs inside the glomerulus or renal corpuscle
3.)secretion
4.)filtration

riding force for filtration - ANShydrostatic stress or BP

, What fluid comes out of the glomerulus? - ANSfiltrate

What is filtrate? - ANSmostly water, electrolytes, vitamins, and waste merchandise. Glucose is
everyday in filtrate.
-much like blood plasma

Reabsorption inside the Nephron Loop - ANSOnly water is absorbed within the descending
limb. Na+ chloride is absorbed inside the ascending limb (no water).

Status of water popping out of nephron loop? - ANS@ Lowest awareness (diluted)

Process taking vicinity in nephron loop? - ANSCountercurrent mechanism (dilutes the urine).
Can also create focused urine from the Na+ absorbed in the ascending limb.

Tubular secretion - ANS-selectively moves materials from blood to filtrate in renal tubules and
amassing ducts
-From blood to tubular
-Usually in the distal tubule
-K+, H+, Uric acid, Penicillin are secreted

Hormones that adjust kidney characteristic - ANSdirectly :
ADH
Aldosterone
ANH
circuitously :
Renin (created through kidney)
Angiotensin

Aldosterone function - ANS-decreases sodium and water loss in urine by means of returning
sodium and water to the blood

Aldosterone: Target Cells - ANSkidneys

ANH function - ANSTells kidneys that blood quantity is simply too excessive, so dumps out H20
and Na+

Effects of ADH - ANSincreases reabsorption of water from urine returned into plasma and
therefore, decreases the volume of water that is excreted
-secreted by posterior pituitary gland
-while someone is dehydrated, hypothalamus makes them thirsty and retains more water
because of the ADH

go with the flow of urine through kidney - ANSGlomerulus
Bowmans Capsule

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