Human Physiology — DU B.Sc. (Hons.) Zoology Previous Year Question Papers

6. Write short notes on cz7c); three of the following : (3x5=15) (a) Exocrine glands (b) Production and functions of gastric HCL (c) Structural classification of neurons (d) Hormonal control of testicular function Exam May-June 2025 2. Attempt four questions in all. 4. Draw well-labelled diagrams wherever necessary. 1. (a) Define the following terms : (i) Absolute refractory period (ii) Isovolumetric contraction (iii) Portal Triad (b) Differentiate between each of the following pairs : (8) (i) Graded potential and Action potential (ii) Sertoli cells and leydig cells (iii) Respiratory zone and Conducting zone (iv) Paracellular and Transcellular reabsorption (c)Give the location and function of the following : (i) Intercalated discs (ii) Brunner's glands 2. (a) Describe the various types of epithelial tissues present in the body. (6) (b) Explain the process of muscle contraction at the molecular level. (9) 3. (a) Discuss the corelation between kidney function and structure. (8) (b)Discuss the digestion and absorption of carbohydrates in the GI Tract. (7) 4. (a) Comment upon the various modes of oxygen transport in the blood. (7) (b) Explain the events of a cardiac cycle. (8) 5. (a)Describe each phase of the uterine cycle and correlate them with the events 6f the ovarian cycle. (9) (b) Enumerate the composition of blood. (6)