Fundamentals of Human Physiology — DU B. Sc. Life Science (Zoology) Previous Year Question Papers

6. Write short notes on any three of the fouowing : (i) Endocrine function of pancreas (ii) Histological Structure of Testis " (iii) .Carbon Dioxide transport in Blood (NEP-UGCF) Tine : 2 Hours Max:±mum Mcirhs .. 60 (b) Attempt four questions in all. (d) Draw wel.1 labelled diagrams wherever required. 1. (a) Define the following .terms : (any three) :3 (ii) Refractory period (iii) Pacemaker (iv) Negative Feedback Mechanism (b) Differentiate between the following: (any three) : (i) Isotropic and Anisotropic Band (ii) Bohr effect and Hald.are effect (iii) Multipolar.and BipQlar neurons (iv) Spermatogenesis and spemeiogenesis (c) Expand the following: (any two) : 1 (iii) MV `(d) Fill in the blanks: (any two) : (i) ............. and ............ are components of muscle TRIAD. " (ii) Hypersecretion of GH during childhood • causes ............ (iii) ............ hormones are derived from cholesterol. (e) Give the location and function of the •fo11owing: (any three) 3 (i) Parietal cells (iii) Chromaffin cells 2. (a) Give an account on microscopic organization of sarcomere. 6 (b) Discuss the eve-#ts involved in excit.ation-contraction coupl_iflg cycle Qf skeletal muscle. 9 3. (a) Describe the endocrine role of ovary in.the female reproductive system. 9 (b) Explain the factors that contribute to resting membrane potential in the nervous tissue. 6 4. (a) Elucidate the major changes during different phases of cardiac cycle. 9 (b) Outline the process of pulmonary Ventilation with the help of diagralns. 6 (a) Describe 'the digestion of proteins in various regions of gastrointestinal tract. 8 (b) Explain the process of Counter-current mechanism in forination of urine. 7