Reproductive Systems D. Crowley, 2007.

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Presentation transcript:

Reproductive Systems D. Crowley, 2007

Saturday, August 24, 2019 Reproductive Systems To be able to label the male and female reproductive systems, and explain the role of each part

Fertilisation The reproductive system contains the organs needed for reproduction - this includes both male and female systems You must learn both the male and female system parts (their scientific names) and be able to describe their functions…

Male Reproductive System The male system contains the following: - Testes Glands Sperm ducts Urethra Penis The testes (individually called a testis) are contained in a sac of skin called the scrotum. Their function is to produce millions of male sex cells (sperm) and to make the male sex hormone (testosterone) which affects the way a male’s body develops. They are located outside of the body keeping sperm at a temperature slightly lower than the body, essential for healthy sperm production Sperm duct and glands The sperm can pass through the sperm ducts, where it mixes with fluids produced by the glands. The fluids provide the sperm cells with nutrients - this mixture of sperm and fluid is known as semen Penis and urethra The penis passes urine out of the male’s body, and passes semen into the vagina of the female during sexual intercourse The urethra is the tube inside the penis that can carry urine or semen. A ring of muscle makes sure that there is no chance of urine and semen getting mixed up

Female Reproductive System The female system contains the following: - Ovaries Oviducts (egg tubes / Fallopian tubes) Uterus Cervix Vagina The two ovaries contain hundreds of undeveloped female sex cells (egg cells or ova). Females have these cells in their body from birth (whereas males produce new sperm continually). These are make the female sex hormones (oestrogen and progesterone) Each ovary is connected to the uterus by an oviduct (Fallopian tube). The oviduct is lined with cillia which are tiny hairs on every cell. Every month (in humans) an egg develops and becomes mature, and is released from an ovary. The cilia waft the egg along the oviduct and into the uterus. Uterus and cervix The uterus (womb) is a muscular bag with a soft lining where the foetus develops until birth. The cervix is a ring of muscle at the lower end of the uterus which keeps the foetus in place during pregnancy. The vagina is a muscular tube that leads from the cervix to the outside of the female body. During sexual intercourse, the male’s penis enters the vagina. The opening to the vagina has folds of skin called labia that meet to form a vulva. The urethra also opens into the vulva, but it is separate from the vagina and is used for passing urine from the body

Worksheet It is vital you learn all the names, and functions of the reproductive systems Using your sheet cut out both the male and female reproductive system, and add the correct labels Stick these into your book, and then in pairs learn the names and functions - there will be a short test soon…

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