Sexual Reproduction In Humans
Muhtasari
Every human began as two cells meeting: a tiny, swimming sperm and a large, food-packed egg. The reproductive systems that make, deliver and receive these gametes are beautifully matched to the job, and so are the gametes themselves, right down to the enzymes in a sperm's tip and the energy stores in an egg.
In this lesson you will name the parts of the male and female reproductive systems and what each does, define fertilisation, explain the adaptations of sperm and egg cells, compare the two gametes, and follow the zygote as it becomes an embryo and develops with the help of the placenta, umbilical cord and amniotic sac.
Malengo
- [Core] Identify on diagrams and state the functions of the following parts of the male reproductive system: testes, scrotum, sperm ducts, prostate gland, urethra and penis
- [Core] Identify on diagrams and state the functions of the following parts of the female reproductive system: ovaries, oviducts, uterus, cervix and vagina
- [Core] Describe fertilisation as the fusion of the nuclei from a male gamete (sperm) and a female gamete (egg cell)
- [Core] Describe the menstrual cycle in terms of changes in the ovaries and in the lining of the uterus (knowledge of sex hormones is not required)
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Tathmini ya Somo
Hongera kwa kukamilisha somo la Sexual Reproduction In Humans. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- Where does fertilisation normally take place in a woman? A. uterus B. ovary C. oviduct D. vagina Answer: C
- What is the function of the scrotum? A. to produce sperm B. to add fluid to sperm C. to hold the testes outside the body to keep them cooler D. to carry urine Answer: C
- Which feature of a sperm provides the energy for swimming? A. acrosome B. flagellum C. many mitochondria D. jelly coat Answer: C
- Which of these correctly compares the gametes? A. eggs are smaller than sperm B. sperm are produced in larger numbers than eggs C. eggs are motile and sperm are not D. sperm have large energy stores Answer: B
- In the placenta, the blood of the mother and the blood of the fetus: A. mix completely B. never mix; substances are exchanged by diffusion C. are the same blood group D. exchange whole cells Answer: B
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Vitabu Vinavyopendekezwa
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Sehemu ya kitabu
Human Reproductive Anatomy and Gametogenesis
Describe human male and female reproductive anatomies
"Biology: Human Reproductive Anatomy and Gametogenesis" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/43-3-human-reproductive-anatomy-and-gametogenesis. Access for free at https://openstax.org/books/biology/pages/1-introduction
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Sehemu ya kitabu
Hormonal Control of Human Reproduction
Describe the roles of male and female reproductive hormones
"Biology: Hormonal Control of Human Reproduction" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/43-4-hormonal-control-of-human-reproduction. Access for free at https://openstax.org/books/biology/pages/1-introduction
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