General Function

Question 1

The general function of urinary system includes:

Answer 1

1. Regulation of substances especially sodium and water; overall involves regulation of intake and output
2. Excretion of waste and excess substances, mainly metabolic wastes
3. An endocrine function also exists

Question 2

Ingestion (gain, intake) tends to ___ levels of substances, for example:

Answer 2

Increase
1`. Water
2. Na+

Question 3

Water (ml/D) ingestion averages ___ ml/day

Answer 3

2600

Question 4

Water intake is regulated by ___.

Answer 4

Thirst.

Question 5

Sweat has ½ the OP of plasma (hypotonic) therefore sweating

loses mostly ___.

Answer 5

Water.

Question 6

Na+ (g/D) ingestion averages ___ g/day (total body Na+ = 100 g); intake regulation is poorly understood

Answer 6

10.5.

Question 7

Excretion (loss, output) tends to _____ levels of substances, for example:

Answer 7

Decreases

1. Water
2. Na+

Question 8

Water (ml/D) excretion occurs through

Answer 8

1. Feces averages 100 ml/day
2. Insensible (skin & lungs) averages 1000 ml/day
3. Urine averages 1500 ml/day

Question 9

Na+ (g/D) excretion occurs through

Answer 9

1. Feces averages 0.25 g/day
2. Sweat averages 0.25 g/day
3. Urine averages 10.0 g/day