Human Reproduction.

12th Class BIOLOGY

Here are some additional points about human reproduction:

Male Reproductive System:

1. Spermatogenesis: The process of sperm cell production

2. Sperm maturation: Sperm cells mature and gain motility

3. Ejaculation: Sperm cells are released from the penis during orgasm

Female Reproductive System:

1. Oogenesis: The process of egg cell production

2. Ovulation: Egg cell is released from the ovary into the fallopian tube

3. Menstrual cycle: The periodic shedding of the uterine lining (endometrium)

Fertilization and Implantation:

1. Capacitation: Sperm cells become capable of fertilization

2. Acrosome reaction: Sperm cell releases enzymes to penetrate the egg cell

3. Zygote formation: Sperm cell fuses with egg cell

4. Implantation window: The time period when the uterine lining is receptive to implantation

Pregnancy and Childbirth:l

1. Gestation: The period of fetal development (approximately 40 weeks)

2. Trimesters: Divisions of pregnancy into three periods (each approximately 13 weeks)

3. Parturition: The process of childbirt

4.Lactation: Milk production for nursing

Hormonal Regulation:

1. Gonadotropin-releasing hormone (GnRH): Regulates sperm and egg production

2. Follicle-stimulating hormone (FSH): Regulates egg maturation

3. Luteinizing hormone (LH): Regulates ovulation and testosterone production

4. Prolactin: Regulates milk productionI hope this provides a more comprehensive understanding of human reproduction!