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