From Guyton and Hall textbook of medical physiology, 4th South Asia edition, write a 5-mark elaborated short note on the following questions: 1.Indicators of Ovulation, Clinical Significance. 2. Methods of Contraception: Temporary, Physiological Basis of Oral Contraceptives, Safe Period 3. Spermatogenesis: describe stages, enlist factors affecting it 4. Physiological Changes in Pregnancy 5. Maternal Changes in the Last Trimester of Pregnancy 6. Mechanism of Ovulation, Contraception - rhythm method* 7. Menstrual Cycle-phases** 8. Circulatory Changes at Birth 9. Parturition: explain the role of oxytocin 10. Lactation of ejection of milk: Role of prolactin and oxytocin