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

5. (a) Write a short note on neuroendocrine control of the immune system. 6 (b) Discuss the JAK-STAT signaling pathway in detail. 9 6. Write short notes on any three : 5×3=15 (i) Feedback in signalling pathways (ii) Recombinant protein hormones and their application (iii) Hormones of the GI tract (iv) Hypothalamo-hypophysial-gonadal axis (NEP-UGCF) B.Sc. (P) Life Science (b) Attempt five questions in all. (d) Draw neat and well-labelled diagrams wherever needed. 1. (a) Define the following terms : (i) Acromegaly (ii) Circadian rhythm (iv) Metabolic dysfunction (b) Differentiate between each of the following pairs: 10 (ii) Adenohypophysis and Neurohypophysis (ill) Water-soluble and lipid-soluble hormone action (v) Sertoli and Leydig cells (c) Give the location and function of the following : 5 (i) Supraoptic Nucleus (ii) Oxyphil cells (iii) Thyroglobulin (iv) Chromaffin cells. (v) Corpus luteum (d) Expand the following : 5 2. (a) Describe the hypothalamic control of pituitary hormone secretion. 9 (b) Discuss in brief the neuroendocrine regulation of stress hormones. 3. (a) What is sleep apnea? Briefly comment upon its treatment and the resultant endocrine disruptions associated with it if left untreated. 8 (b) What is central precocious puberty? Describe the various genetic and non-genetic factors that influence the onset of 4. Describe the various hormone classes and discuss in detail the biosynthesis of steroid hormones. 15