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2015
Zoology(Major)
Paper : 5.1
(Animal Physiology)
Full Marks : 60
Time’: 3 hours
1. Arswer/Choose the correct answer any seven from the following: 1x7=7
(a) What is pacemaker?
(b) Define all or none response phenomenon of nerve fibre.
(c) Mention the name of the blood clotting factor which is known as anti-haemophilic factor.
(d) State the contents of gallbladder in man.
(e) Define heartbeat.
(f) Which statement is correct?
(i) All arteries carry oxygenated blood
(ii) All veins carry oxygenated blood
(iii) All arteries except pulmonary artery carry oxygenated blood
(iv) All veins except pulmonary vein carry oxygenated blood
(g) The plasma of a person in group ‘O’contains antibody
(i) α
(ii) β
(iii) α and β
(iv) Neither α nor β
(h) The oxyntic glands secrete
(i) pepsin
(i) mucus
(iii) water
(iv) acid
(i) Kwashiorkor is caused by deficiency of
(i) carbohydrates
(ii) proteins
(iii) fats
(iv) vitamins
(j) The human heart is
(i) neurogenic
(i) pulsating
(iii) myogenic
(iv) None of the above
2. Answer any four questions from the following : 2x4=8
(a) Differentiate between resting potential and action potential.
(b) Differentiate between pulmonary circulation and systemic circulation.
(c) Differentiate between isometric contraction and isotonic contraction.
(d) Differentiate between skeletal muscle and cardiac muscle.
(e) Differentiate between uricotelic excretion and ureotelic excretion.
(f) Differentiate between blood and lymph.
(g) Differentiate between’ essential and non-essential amino acids.
(h) Compare between the neuro-neuronal synapse and neuromuscular synapse.
3. Answer any three questions from the following : 5x3=15
(a) How does homoiosmotic animal regulate osmotic concentration? 5
(b) Discuss about the renin-angiotensin-aldosteron system in vertebrate. 5
(c) Briefly describe the structure and functions of liver. 3+2=5
(d) Describe how interchange of gases occurs during external respiration. 5
(e) Define erythropoiesis. Where does it occur? What measures need to be-taken before blood transfusion? 1.5+1.5+2=5
(f) State the name of the » fat-soluble vitamins. Discuss the clinical effects of the deficiencies of each of these vitamins. 1+4=5
4. Give a detailed account of the cellular contents of blood. Briefly describe the functions of platelet. 8+2=10
Or
Describe the functional architecture of skeletal muscle with diagram. Discuss the sliding filament theory of muscle contraction. 5+5=10
5. What is metabolic water? Discuss in detail about the role of kidney in regulating water balance. Mention the role of ADH in water regulation process. 1.5+6+2.5=10
Or
Mention=the role of ‘chloride-secreting cells in the gills of marine teleost. Give a brief account of osmoregulation in terrestrial animals. 2+8=10
(6) Give a brief idea of nerve fibres. How does acetylcholine remove from the synaptic cleft after nerve impulse is over? Briefly describe
the saltatory propagation of nerve impulse. 3+2+5=10
Or
Draw a well-labelled diagram of uriniferous tubule. State its different parts. How does filtration of blood occur in the nephron? 2.5+1.5+6=10
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