Exam (elaborations)
Bio 253 final exam questions and answers already graded A+ 2024/2025
- Course
- Institution
Bio 253 final exam questions and answers already graded A+ 2024/2025
[Show more]
Content preview
Bio 253 final examOrganelles are - ANS
Organs of the Urinary system - ANSkidneys, ureters, urinary bladder, urethra
draw and label a kidney with the subsequent phrases: Cortex, Medulla, Pelvis, renal artery,
renal vein, ureter, nephron - ANS
useful unit of the kidney - ANSnephron
1 million in step with kidney!
What elements make up the nephron? - ANSRenal corpuscle
Renal tubule
Glomerulus (capillaries that filter the blood plasma)
Bowman's tablet (surrounds the glomerulus)
Efferent arteriole
loop of henle
What is the glomerulus product of? - ANScapillaries
Function of a nephron - ANSfilter blood and produce urine
Two nephron kinds - ANSjuxtamedullary and cortical
juxtamedullary nephrons - ANS-Long nephron loops deeply invade medulla
-Ascending limbs have thick and thin segments
-Important in manufacturing of concentrated urine
-found on the boundary of the cortex and medulla
cortical nephrons - ANS-eighty five% of all nephrons
-short nephron loops
-efferent arterioles department into peritubular capillaries round PCT and DCT
How is urine made inside the kidney? - ANS1.)Reabsorption - moving substances with tubule
into the blood.
2.)filtration - occurs in the glomerulus or renal corpuscle
3.)secretion
4.)filtration
using force for filtration - ANShydrostatic pressure or BP
, What fluid comes out of the glomerulus? - ANSfiltrate
What is filtrate? - ANSmostly water, electrolytes, nutrients, and waste merchandise. Glucose is
normal in filtrate.
-much like blood plasma
Reabsorption inside the Nephron Loop - ANSOnly water is absorbed within the descending
limb. Na+ chloride is absorbed in the ascending limb (no water).
Status of water coming out of nephron loop? - ANS@ Lowest concentration (diluted)
Process taking place in nephron loop? - ANSCountercurrent mechanism (dilutes the urine). Can
additionally create concentrated urine from the Na+ absorbed within the ascending limb.
Tubular secretion - ANS-selectively actions substances from blood to filtrate in renal tubules and
collecting ducts
-From blood to tubular
-Usually within the distal tubule
-K+, H+, Uric acid, Penicillin are secreted
Hormones that regulate kidney feature - ANSdirectly :
ADH
Aldosterone
ANH
circuitously :
Renin (created by way of kidney)
Angiotensin
Aldosterone characteristic - ANS-decreases sodium and water loss in urine by means of
returning sodium and water to the blood
Aldosterone: Target Cells - ANSkidneys
ANH characteristic - ANSTells kidneys that blood quantity is too excessive, so dumps out H20
and Na+
Effects of ADH - ANSincreases reabsorption of water from urine back into plasma and
consequently, decreases the extent of water this is excreted
-secreted by posterior pituitary gland
-whilst someone is dehydrated, hypothalamus makes them thirsty and keeps greater water
because of the ADH
flow of urine through kidney - ANSGlomerulus
Bowmans Capsule
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Ashley96. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
72042 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
