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Nurs 112:Medical Phisiology Question Paper

Nurs 112:Medical Phisiology

Course:Bachelor Of Science(Nursing)

Institution: Chuka University question papers

Exam Year:2012

INSTRUCTIONS:
1. All questions are compulsory. 2. Each multiple choice question (MCQ) is 1 mark.
SECTION 1: MULTIPLE CHOICE QUESTIONS (10 MARKS)
1. The difference in concentration of H+ in a solution of PH 2.0 compared with one of PH 7.0 is:-
(a) 5 - fold (b) 5 1 - fold (c) 105 fold (d) 105 as much
2. Endo cytosis:-
(a) Includes phagocytosis and pinocytosis but not clathrin mediated or caveolaedependent uptake of extraculular components.
(b) Refers to the merging of an intraculular vesicle with the plasma membrane to deliver intracellular contents to the extracellular contents.
(c) Refers to the invagination of the plasma to uptake extra contents into the cell.
(d) Refers to vesicular trafficking between Golgi stacks.
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3. Cells responsible for innate immunity are activated most commonly by:
(a) Glucocorticoids (b) Pollen (c) Carbohydrates sequences in bacterial cells walls. (d) Eosinophils
4. Which of the following has the highest PH?
(a) Gastric juice (b) Hepatic juice (c) Pancreatic juice (d) Saliva
5. Removal of the entire colon would be expected to cause:
(a) Severe malnutrition (b) Death (c) Megaloblasticanaemia (d) Decreased urinary urobilitrogen
6. Calcium absorption is increased by:
(a) Hypercalcaemia (b) Oxalates in the dice (c) Iron overload (d) 1, 25 dihydroxycholecalciverol
7. The second heart sounds are caused by:
(a) Vibrations in the ventricular wall during systole (b) Closure of the aortic and pulmonary valves (c) Ventricular filling (d) Closure of the Mitral and Tricuspid valves.
8. Which of the following increases when the viscosity of blood is increased?
(a) Arterioles (b) Arteries (c) Capillaries (d) Venules
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SECTION 2: SHORT ANSWER QUESTION (40 MARKS)
9. Define the following terms: (@ 1 mark)
(i) Physiology (ii) Homeostasis (iii)Diffusion (iv) Antigen (v) Aerobic respiration [5 marks]
10. Explain the difference between active and passive immunity. [5 marks]
11. State one (1) function of each of the organs below. (@ 1 mark) [5 marks]
(i) Stomach (ii) Red blood cells (iii) Golgi apparatus (iv) Lungs (v) Male gonads
12. Describe the three phases of stomach secretion. [9 marks]
13. Describe the pressure changes that occur in the left atrium, left ventricle and aorta during diastole and systole. [12 marks]
14. Describe negative and positive feedback mechanisms. [9 marks]
SECTION 3: LONG ANSWER QUESTIONS (20 MARKS)
15. The blood pH of a runner was monitored during a race. It was noticed that shortly after the beginning of the race, her blood pH increased for a short time.
(i) Define the term “Acidic solution”. [1 mark]
(ii) What is a buffer solution? [2 marks]
(iii) Describe the physiology of breathing. [8 marks]
(iv) Explain why the blood pH dropped. [9 marks]
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Nurs 112:Medical Phisiology Question Paper

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