Saturday, September 17, 2011

Term 2 Topic - Reproductive Systems

The reproductive system is a system that is vital to the continuity of mankind, and I learned about in term two.

Firstly, the Male Reproductive System. The main parts of the male reproductive system are:
1. Testis: It is in charge of the production of sperms.

2. Scrotum: The layer of skin around the testis, in charge of keeping the testis cool, to ensure the production of sperms.

3. Urethra: This is a tube from the bladder to the penis, and its purpose is to transport semen and urine to the end of the penis.

4. Penis: Made out of tissues so that when the man is sexually-stimulated, blood will rush into the tissues to make the penis hard, allowing the penis to enter the vagina of a woman during sexual intercourse.

5. Seminal vesicles, Cowper's Gland and Prostate gland: Provide nutrients and liquid for the sperms to form semen, allowing the sperms to have a medium to swim in.

Secondly, the Female Reproductive System:
1. Ovary: To produce egg and female sex hormones.

2. Oviduct: Walls of the oviduct are lined with cilia that pushes the egg along the oviduct together with the contractions of the oviduct.

3. Uterus: The walls of the uterus (endometrium), allows the fertilized egg to be implanted in it.

4. Vagina: Allows the entrance of the penis and can expand to allow child birth.

5. Cervix: Expands also to allow child birth.

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