UNIJOS Physiology MCQs Past Questions And Answers - Multiple Choice Objectives

Download original University of Jos (UNIJOS) Physiology MCQs Past Questions and Answers below for your practice. We discovered 203 repeated questions from 2010 to 2016. Read it below and download your complete copy now.

This includes past MCQs in physiology exams administered to students of the following departments in the UNIJOS college of medicine

1. Anatomy
2. Dentistry And Dental Surgery
3. Medicine and Surgery
4. Nursing / Nursing Science
5. Pharmacy
6. Veterinary Medicine

1. Blood
A. Makes up about 7 per cent of body weight.
B. Forms a higher percentage of body weight in fat than in thin people
C. Volume can be calculated by multiplying plasma volume by the hematocrit (expressed as a percentage).
D. Volume rises after water is drunk
E. Expresses serum when it clots
REVISION NOTES
A. True – For example, 5 kg (about 5 liters) in a 70 kg man.
B. False – Since fat tissue is relatively avascular, the reverse is true.
C. False – It can be calculated by multiplying plasma volume by 1/1 minus hematocrit (expressed as a decimal).
D. True – The water is absorbed into the blood.
E. True – Serum is plasma minus its clotting factors.

2. Regarding the inflammatory response:
a) Tissue swelling is the first stage of the inflammatory response.
b) Mast cells secrete chemotactic agents that attract lymphocytes
c) Macrophages secrete vasoactive materials during the inflammatory response
d) The inflammatory response can be triggered by antibody binding to the surface of micro-organisms
ANSWER
b) Mast cells secrete chemotactic agents that attract lymphocytes
REVISION NOTES
The first stage of the inflammatory response is vasodilatation (the red reaction of the triple response). This is triggered by the formation of complement C3a and C5. Mast cells (not macrophages) secrete vasoactive substances (prostaglandins and leukotrienes) during the inflammatory response.

3. RNA contains ribose, which is a monosaccharide with five carbons
a) True
b) False
ANSWER
a) True
REVISION NOTES
RNA consists of nucleotides based on the pentose ribose.

4. Regarding sweating and heat loss:
a) Heat loss through sweating is controlled by the parasympathetic nervous system.
b) The efficacy of sweating as a mechanism of heat loss is increased in a tropical rain forest.
c) Profuse sweating can lead to heat exhaustion.
d) Sweat is secreted by the apocrine glands
ANSWER
c) Profuse sweating can lead to heat exhaustion.
REVISION NOTES
Sweat rates are controlled by the sympathetic nervous system. In humid conditions (such as those found in a tropical rain forest) sweat evaporates more slowly and is therefore a less effective means of heat loss. During profuse sweating, fluid and salts are lost from the body in large amounts. This can lead to a variety of symptoms collectively known as heat exhaustion.

5. A fall in plasma sodium concentration
A. May result from excessive production of ADH
B. Decreases intracellular fluid volume
C. May occur in people engaged in hard physical work in humid tropical climates
D. Reduces plasma osmolality
E. Is likely to cause thirst.
REVISION NOTES
A. True – Due to excessive reabsorption of water from the collecting ducts of the nephron.
B. False – Water is drawn into cells from the hypotonic extracellular fluid; water intoxication may occur.
C. True – People sweating heavily may replace their water, but not their salt, deficit; they tend to get muscle cramps unless they supplement their salt intake.
D. True – Sodium ions are responsible for nearly half of plasma osmolality.
E. False – The hypothalamic osmoreceptors responsible for thirst respond to hypertonicity, not hypotonicity of the ECF.