Phys 261 - Ch. 19, 20, 21 questions with verified answers

Phys 261 - Ch. 19, 20, 21 questions
with verified answers

Name the functions of kidneys? - ANS ✔✔1. Filtration, Re-absorption, Secretion, and Excretion.



2. Regulation of osmolarity, ions, blood pressure, and pH.



3. Production of Hormones.



What is osmolarity? - ANS ✔✔The total solute concentration of a solution.



Describe the Nephron Pathway? - ANS ✔✔Renal Corpuscle ->

Proximal Tubule ->

Descending Limb ->

Loop of Henle ->

Ascending Limb ->

Distal Tubule ->

Collecting Duct ->

Renal Pelvis ->

Ureter ->

Bladder



Describe the function and components of the renal corpuscle? - ANS ✔✔1.Filters (protein and
blood free) plasma.

, 2. Consists of the glomerulus and Bowman's Capsule.



What's the difference between the glomerulus and Bowman's Capsule? - ANS ✔✔Bowman's
Capsule is a structure that encases the Glomerulus and catches filtrates coming from
glomerulus.



Glomerulus is a network of blood vessels in a ball shape tuft and the actual filter.



What is filtered through the renal corpuscle? - ANS ✔✔80% of plasma passing through is
recirculated without filtration.

20% of plasma is filtered.

<1% of plasma is excreted.



What are the typical contents of renal corpuscle filtrates? - ANS ✔✔Filtrates may contain... I C U
WAG

Ions

Creatinine

Urea

Water

Amino Acids

Glucose



What is the function of the proximal tubule? - ANS ✔✔1. Reabsorption of organic nutrients,
ions, and water.



2. Secretion of metabolites and xenobiotic molecules.



The Loop of Henle includes what nephron structures? - ANS ✔✔1. Descending Limb