Question

1. Which of the following is not a function of the kidneys? a. Filtration b. Reabsorption...

1. Which of the following is not a
function of the kidneys?
a. Filtration
b. Reabsorption
c. Excretion
d. Secretion


2. Filtration occurs at the:
a. Glomerulus
b. Ascending Loop of Henle
c. Descending Loop of Henle
d. Collecting Ducts


3. Which of the following substances
are not readily filtered?
a. Red Blood Cells
b. Ions
c. Glucose
d. Urea


4. The movement of material from the
nephron lumen to the bloodstream is:
a. Filtration
b. Reabsorption
c. Excretion
d. Secretion


5. The movement of material from the
bloodstream to the nephron lumen is:
a. Filtration
b. Reabsorption
c. Excretion
d. Secretion

Science   Anatomy-And-Physiology   
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Homework Answers

Answer #1

1. c) Excretion

Explanation: kidney is involved in formation of urine. Urine formation occurs in 3 steps :

- Ultrafiltration

-Selective reabsorption

- tubular secretion

2. A) glomerulus

Explanation: Filtration occurs at the glomerulus where filtration membrane is formed consisting of:

- Endothelium and basememnt membrane of the glomerular capillary

- Basment membrane and podocyte of the visceral layer of the bowmens capsule.

3. a) red blood cells

Explanation: plasma proteins and blood corpuscles namely red blood cells, white blood cells and platelets are not filtered.

4. b) Reabsorption

Explanation: it is the process of movement of the materials from tubular fluid back into the blood stream.

5. d) Secretion

Explanation: tubular secretion involves the movement of the material from the blood stream into the tubular fluid

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