Kerala University 2005 M.B.B.S physiology including Biophysics - Question Paper
FIRST PROFESSIONAL MB.B.S. DEGREE EXAMINATION MARCH/APRIL 2005
PHYSIOLOGY including BIOPHYSICSPaper I
(New Scheme)
Time : Three Hours Maximum : 50 Marks
Answer Sections A and B separately.
Draw diagrams wherever necessary.
Section A
I. Multiple Choice Questions (separate sheet attached) (10 x V4 = 5 marks)
II. (a) Dthw and label pahsic flow of blood through the coronary vessels.
(b) Compare a cortical and juxtamedullary nephron.
(2x3 = 6 marks)
III. (a) Explain the reabsorption of glucose from renal tubules.
(b) Name the invitro antocoagulants. Briefly explain the action of any one of them.
(2x2 = 4 marks)
IV. (a) Discuss the chemical control of respiration.
(b) Name the enzymes present in pancreatic juice. How is pancreatic secretion regulated ?
(c) How food is prevented from entering the respiratory passages while swallowing ?
(d) What is PR interval ? What is its significance ?
(e) How is body temperature regulated on exposure to cold environment ?
(6 x 2 = 10 marks)
Section B
V. A 30 year old executive was brought to casuality following an accident. O/E HC had rapid thready pulse, respiratory rate 30/mt. systlolic BP 90 mm. of Hg. and cold pale skin.
1 What is this condition ?
2 What are the compensatory reactions occuring in this condition ?
3 What is the immediate management of this condition ?
(2 + 5 + 3 = 10 marks)
VI. Give the reasons for the following:
1 Dumping syndrome is seen after gastrectomy.
2 Alveoli are always kept dry.
3 Retoculocyte count is increased after Vitamin B12 therapy.
4 ODC (Oxygen Dissociation Curve) in infants is shifted to left.
5 Increased intracranial tension results in bradycardia and elevation of Blood Pressure.
(5 x 3 = 15 marks)
PHYSIOLOGY including BIOPHYSICSPaper I
Note.(1) Do not write anything on the question paper.
(2) Write your register number on the answer-sheet provided.
(3) Select the appropriate answer and encircle the alphabet against each question in the answer-sheet provided.
1. The hormonal stimulus which is more important in pancreatic enzyme secretion is :
(A) Secretion. (B) Histamine.
(C) CCK-PZ. (D) Motiline.
2. Nitrogen wash out method measures :
(A) Residual volume. (B) Inspiratory capacity.
(C) Functional residual capacity. (D) Dead space.
3. Plateau phase of action potential of cardiac muscle is due to :
(A) Opening of sodium channels. (B) Opening of potassium channels.
(C) Opening of slow Ca channels. (D) Closing of sodium channels.
4. Renal failure is characterised by the following except:
(A) High blood urea. (B) High blood pH.
(C) Hyper kalemia. (D) Decreased creatonine.
5. Plasma cells are :
(A) Activated T cells. (B) Activated B cells.
(C) Activated neutrophils. . CD) Activated tissue macrophages.
6. Spherocytosis can be caused due to abnormality of:
(A) Spectrin. (B) Ankyrin.
(C) Band 3. (D) All of the above.
7. Partial pressure of Nitrogen is greatest in :
(A) Expired air. (B) Tissues.
(C) Inspired air. (D) Alveoli.
8. A substance that is completely reabsorbed from kidney is :
(A) Sodium. (B) Potassium.
(C) Glucose. (D) Urea.
9. Carbohydrate in small gut is hydrolysed by the following enzymes except:
(A) Lactase.
(B) Ptyalin.
(D) Sucrose.
(B) Arterioles.
(D) Veins.
(C) Maltese.
10. The capacitance blood vessel include : (A) Large arteries.
(C) Capillaries.
(10 x Vi = 5 marks)
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