Q. No.Which of the following contributes maximum to the buffer capacity of human body?
1. carbonic acid/bicarbonate buffer system.
2. phosphate buffer system.
3. protein buffer system.
4. oxygen/carbondioxide buffer system.
1. carbonic acid/bicarbonate buffer system.
2. phosphate buffer system.
3. protein buffer system.
4. oxygen/carbondioxide buffer system.
What is expected to happen to the pH of urine if the pH of the blood gets acidic?
1. Decreases.
2. Increases.
3. Remains the same.
4. First increases and than decreases.
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Highest concentration of proteins are expected to be found in:
1. lymph
2. urine
3. cerebrospinal fluid
4. intracellular fluid
Dehydration in human body will:
1. inhibit the thirst center
2. cause stomach distention
3. stimulate osmoreceptors in the hypothalamus
4. inhibit ADH secretion
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ADH will not be secreted due to:
1. ingesting more water than is needed to balance water loss
2. stimulation of hypothalamic osmoreceptors
3. loss of body fluid
4. increased blood osmolarity
Secretion of ADH does not lead to:
1. increased permeability of collecting duct to water
2. reduced urine osmolarity
3. concentration of urine
4. reduced urine output
A diuretic:
1. causes water retention
2. increases urine output
3. prevents water excretion in the urine
4. reduces insensible water loss from the body
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A decrease in secretion of ADH will lead to ______ volume and ______ concentration of urine.
| 1. increased, decreased | 2. increased, increased |
| 3. decreased, increased | 4. decreased, decreased |
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The water produced as an end product of the oxidation of energy-containing molecules such as carbohydrates, fats and proteins is called as:
1. cutaneous water.
2. metabolic water.
3. transcellular water.
4. free water.
The main reason for the movement of fluid between plasma and tissue fluids are:
1. hydrostatic pressure and osmotic pressure
2. facilitated diffusion and active transport
3. primary and secondary active transport
4. transmembrane channels
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