Download original Nnamdi Azikiwe University Nnewi (UNIZIK) Physiology Past MCQs Questions and Answers below for your practice. We discovered 183 repeated questions from 2009 to 2016. Read it below and download your complete copy now. Physiology Past MCQs Medical Laboratory Technology / Science
This includes past MCQs in physiology exams administered to students of the following departments in the UNIZIK college of medicine
- Medical Laboratory Technology / Science
- Medical Rehabilitation
- Nursing / Nursing Science
- Medicine and surgery
1. Ingestion of protein
A. Raises metabolic rate more than ingestion of equally calorific amounts of fat or carbohydrate
B. Tends to lower the pH of urine
C. Permits the body to synthesize the essential amino acids
D. Yields more toxic metabolites than fat or carbohydrate
E. Should exceed 2 g/kg body weight/day to satisfy normal body requirements
A. True – Due, perhaps, to the additional metabolic work in processing protein in the body
B. True – Protein is the main dietary source of the acidic residues excreted by the kidney.
C. False – Essential amino acids cannot be synthesized in the body.
D. True – These metabolites, normally detoxified in the liver, may cause hepatic encephalopathy in hepatic failure.
E. False – One gram per kilogram is adequate.
A. Decreases the renal clearance of phosphate
B. Mobilizes bone calcium independently of its actions on the kidney.
C. Depresses the activity of the anterior pituitary gland.
D. In the blood rises when the calcium level falls.
E. Stimulates the final activation of vitamin D (cholecalciferol) in the kidney.
A. False – It increases it by depressing phosphate reabsorption.
B. True – It does so in the absence of the kidneys.
C. False – It does not affect the anterior pituitary.
D. True – Blood calcium level determines its rate of secretion.
E. True – From 25-hydroxy to 1,25-dihydroxycholecalciferol.
3. In the brachial artery
A. Pulse waves travel at the same velocity as blood.
B. Pulse pressure falls with decreasing elasticity of the wall.
C. Pressure rises markedly when the artery is occluded distally.
D. Pressure falls when the arm is raised above head level.
E. Pulse pressures have a smaller amplitude than aortic pulse pressures.
A. False – Pulse waves travel at about ten times the blood velocity.
B. False – It rises; arterial elasticity normally damps the pulse pressure.
C. False – Blood flows off rapidly via collaterals so that little pressure change occurs.
D. True – By the hydrostatic equivalent of the column of blood between it and the heart.
E. False – Brachial arterial pulse pressures are greater due to the superimposition of waves reflected from the end of the arterial tree.
4. Intravenous infusion of one liter of
A. Normal (isotonic) saline increases the ECF more than the ICF volume.
B. 10 per cent dextrose provides sufficient energy for a sedentary adult for one day.
C. A suspension of lipids provides 2–3 times the energy of a suspension of carbohydrates with the same concentration.
D. Isotonic (5 per cent) dextrose raises total body water by 1–5 per cent in the average adult.
E. An amino acid solution provides between 3–4 times the energy of a carbohydrate solution with the same concentration.
A. True – Sodium and chloride remain mainly extracellular.
B. False – It provides less than a quarter of the daily energy requirement.
C. True – A gram of fat when oxidized liberates 2–3 times the energy liberated by a gram of carbohydrate.
D. True – Total body water (about 40 liters) increases to about 41 liters (2.5 per cent increase).
E. False – Amino acids and carbohydrates provide similar energy per unit weight but amino acids are useful for maintaining body tissue proteins.
5. Pain receptors in the gut and urinary tract may be stimulated by
A. Cutting through their wall with a sharp scalpel
C. Inflammation of the wall
D. Acid fluid
E. Vigorous rhythmic contractions behind an obstruction
A. False – The intestine may be cut painlessly during operations under local anaesthesia.
B. True – Stretch is an adequate stimulus for these receptors.
C. True – Chemicals released in inflammation lower the pain threshold (hyperalgesia).
D. True – As with a peptic ulcer.
E. True – This is the cause of the intermittent pain known as colic.