Life Science

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Seminal vesicle: A gland

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that produces a nutrient-

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rich fluid that that provides

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energy for the spem cells

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4.1 Male reproductive system

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Cowper’s gland: Produces

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mucus that helps with the

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movement of sperm oells

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Figure 4.1 below shows the different parts of the male reproductive system

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and their functions.

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Scrotum: Skin sac that

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protects the testes

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and holds the testes

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‘outside’ the body

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at a

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temperature that is 2”C

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below 37 C. This is the

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best temperature for the

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production of sperm

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Functions of testosterone

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Figure 4.1 Structure of the male reproductive system

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Structure of a sperm cell

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1. Development of male secondary sexual characteristics

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such as

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beard

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pubic hair

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Stimulates the maturation of sperm cels.

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2

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Figure 4.2 below shows the different parts of

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functions.

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Head

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Middle section or

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4

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The testes produce the hormone testosterone

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which has the following

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functions:

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body

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Figure 4.2 Structure of a sperm cel

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Questions

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Send feedback

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tail

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Activity 1

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give ONE function of each.

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X

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3 Give TW0 functions of testosterone.

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testes: Produces sperm cells arnd

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Why this ad?

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the hormone testosterone

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TEMU

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1 Name the accessory glands of the male reproductive system and

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Temu

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Name the organ where testosterone is produced.

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Mitochondria: Provide

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4.6 * FREE

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energy for swimming

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Name all the parts of the sperm cell that are responsible for

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movement. State what the function of each part is.

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sperm cell and their

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5 Explain the role of the nucleus of the sperm cell in fertilisation.

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Acrosome: Contains

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enzymes to digest wall of

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egg oell for fertilisation

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Nucleus: Contains

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23 chromosomes

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Prostate gland: Produces an

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alkaline fluid that neutralises the

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acids produced in the vagina

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which wOuld kill sperm cells

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Sperm duct: Transports sperm

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from the epididymis to the urethra

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J tail: Used for swimming

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4G

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urethra: Transports semen and

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urine out of the body

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epididymis: Sperm cells mature

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and are stored here

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.l l

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