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The Reproductive System

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The Reproductive System What are the principle structures of the male reproductive system and what are they comprised of? The testes are the principle structure of the male reproductive system. The testes are comprised of thousands of fine, coiled tubule in which the sperm are produced. What other parts of the male reproductive system are they continuous with? The tubules in the testis are continuous with the epididymis, where the sperm matures, and the vas deferens. The vas deferens transports the sperm from the testis and joins the urethra just below the bladder. ...read more.


What are the ovaries, what are they suspended by and what is their function? There are two ovaries which are suspended by ligaments in the upper pelvic cavity either side of the uterus. Their function is to produce the hormone oestrogen and progesterone and to produce ova. What causes follicles to develop and what do they become? Each immature ovum is encased in a sac and the whole structure is called a follicle. The follicles develop, usually one at a time, in response to the various sex hormones until they become primary follicles. ...read more.


What happens if fertilisation occurs? If fertilisation occurs, it usually takes place in the wider part of the fallopian tube. The fertilised ovum, now called a zygote, arrives in the uterus about 7 days after ovulation. What happens if fertilisation does not occur? If fertilisation does not occur, the uterus lining, which thickens in preparation for the implantation of the ovum, breaks down during menstruation. What is the purpose of the cervix? The cervix is a small passageway found at the bottom end of the uterus. It dilates during childbirth. The cervix opens into the vagina, which serves as a passageway for childbirth and for menstrual flow. ...read more.

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