Part 3: Body fluids, GRF and RPF

Question 1

Homeostasis -

1. typical daily fluid intake ____ml/day, ingestion of food and fluid (___ml) and carbohydrate oxidation (___ml)
2. Loss of body water occurs through (4)
3. Insensible water loss ___ml/day, occurs by (2)
4. sweating ___ml/day, varies with (2)
5. water loss in feces ___ml/day
6. water excreted via the kidneys ___ml/day

Answer 1

1. 2300, 2100, 200
2. insensible water loss, sweating, feces, excreted via the kidneys
3. 600-800, breathing and through the skin
4. 100, exertion and environment
5. 100
6. 1400

Question 2

Body fluid compartments -

1. Two types of fluid
2. extracellular fluid consists of (3)
3. Which has the most volume?

Answer 2

1. extracellular and intracellular fluid
2. interstitial fluid, blood plasma, transcellular fluid
3. intracellular

Question 3

Intracellular Fluid -

1. includes all of the fluid ___
2. % of total body weight
3. low in (3)
4. high in (2)
5. Cells b/w intracellular and extracellular fluid allow ___ and are NOT freely permeable to most ___

Answer 3

1. inside of the cells of the body
2. 40%
3. sodium, calcium, and chloride
4. potassium and phosphate ions
5. free exchange of water, electrolytes

Question 4

Extracellular Fluid -

1. all of the fluid ___, includes (2)
2. % of total body weight
3. low in (3)
4. high in (3)
5. interstitial fluid and plasma and separated by ___, EXCEPT to ___

Answer 4

1. outside of the cells
2. 20%
3. potassium, phosphates, and proteins
4. sodium, chloride, and bicarbonate
5. highly permeable capillary membrane, proteins

Question 5

Osmosis -
1. the net diffusion of water across a selectively permeable membrane from a region of ___ water concentration to one that has a ___ water concentration

Answer 5

1. High, low