Urinary System 1 Reabsorption depends on A active transport

Urinary System

1. Reabsorption depends on ________.

A. active transport of sodium across the nephron wall

B. a steep solute concentration gradient

C. osmosis across the nephron wall

D. all of the above

2. __________directly promotes water conservation.

A. Renin

B. Aldosterone

C. ADH

D. two of the above

E. All of the above

F. none of the above

3. Match the following salt & water balance concepts (match options A-E with i.- v.):

A. loop of Henle ________

B. nephron   ________

C. thirst mechanism   ________

D. reabsorption   ________

E. glomerulus   ________

I. primarily occurs at the nephron tubule

II. establishes vertical osmotic gradient

III. has five parts

IV. responsible for filtration

V. controls water gain

4. Choose all that should NOT be present in a urinalysis of a healthy person: (Can choose more than 1 answer for this question)

A. Salt

B. Urea

C. red blood cells

D. protein

E. ammonia

F. white blood cells

5. Drinking too much water without urinating can result in death due to water intoxication.

A. True

B. False

6. As a person ages, nephron tubules lose some of their ability to concentrate urinne, resulting in a need for frequent urination.

A. True

B. False

Solution

Q 1.

Answer: D (all of the above)

Q 2.

Answer: D (two of the above)

Explanation: aldosterone and antidiuretic hormone having the function of regulating the amount of sodium and water in the body.

Aldosterone act by increases the reabsorption of sodium and water.

Whereas antidiuretic hormone reduces the amount of water excreted in urine.

This results in conservation of body water and decrease in urine production.

Renin responds to low blood volume or decreased sodium levels in the body.

Q 3.

Answer:

Matching:

A-----> II

B-----> III

C-----> V

D-----> IV

E-----> I

Q4.

Answer: E (Ammonia)           

Compound

Normal range in urinalysis

1

white blood cells

0-5 wbc/hpf

2

Red blood cells

up to 4 RBC

3

protein

0 to 20 mg/dl

	Compound	Normal range in urinalysis
1	white blood cells	0-5 wbc/hpf
2	Red blood cells	up to 4 RBC
3	protein	0 to 20 mg/dl