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B.Sc (VI Semester) Examination
ZOOLOGY
Paper : ZOO/T6/361
( Endocrinology and Immunology )
Full Marks : 80
Pass Marks : 35%
Time : Three Hours
1. Answer the following questions : 2×5=10
(a) Name two hormones secreted by the pituitary.
(b) Name two peptide hormones.
(c) What are the two phases of estrous cycle?
(d) Name two cells associated with immune system.
(e) Name two chains associated with MHC.
2. Write short notes on any four of the following : 5×4=20
(a) Neurohypophysis
(b) Hormones of anterior pituitary
(c) Testosterone
(d) Thymus
(e) MHC–II
3. Answer any five from the following : 10×5=50
(a) Discuss how hypothalamus regulates the hormones of the pituitary.
(b) Describe the mechanism of action of steroid hormones.
(c) With the help of graphical representation of hormones involved, elaborate the process of estrous cycle.
(d) How does acquired immunity differ from innate immunity? Explain with the help of examples.
(e) Describe the mechanism of cell-mediated immunity with the descriptions of various cells and mechanisms involved.
(f) Describe the functions of the hormones secreted by the adrenal medulla.
(g) Discuss the defense mechanism of secondary lymphoid organs against immunogens in human body.
