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ICSI (Intracytoplasmic sperm injection) is used in severe male factor infertility where a single sperm is injected directly into the oocyte cytoplasm.
The LH surge 24-36 hours before ovulation triggers the final maturation of the oocyte and weakening of the follicle wall, leading to ovulation.
The average age of menarche in Indian girls is 11-13 years, though it can vary based on nutritional status, genetics, and geographic location.
Copper T 380A is a non-hormonal IUD that works by releasing copper ions which are spermicidal. Levonorgestrel IUD (Mirena, Skyla) are hormonal IUDs.
The luteal phase typically lasts 12-16 days (average 14 days) and is characterized by relatively constant progesterone production from the corpus luteum.
Testosterone is responsible for development of male secondary sexual characters like facial hair, deepening of voice, muscle development, and sperm production.
Oral contraceptive pills are hormonal contraceptives, not barrier methods. Barrier methods physically prevent sperm from reaching the ovum.
The corpus luteum, formed after ovulation, secretes progesterone, which maintains the endometrium for potential implantation and pregnancy.
Levonorgestrel-releasing IUDs (like Mirena) release the hormone levonorgestrel, which thickens cervical mucus and prevents fertilization, with added uterine effects.
The average menstrual cycle is 28 days, though it can range from 21-35 days. It consists of menstruation, follicular phase, ovulation, and luteal phase.