martes, 27 de noviembre de 2012

REPRODUCTION

Vocabulary
genital organ, primary sexual characteristic, puberty, secondary sexual characteristic, Fallopian tube, penis, prostate gland, scrotum, seminal vesicle, testicle, testes, urethra, uterus, vagina, vas deferens, vulva, amnion, egg cell, embryo, fertilisation, foetus, menstruation, period,
placenta, pregnancy, sex cell, sperm, umbilical cord, zygota, afterbirth, belly button, birth, Caesarean section, contraction, dilation, formula, incubator, labour, lactation, prematuree,

Remember
The male and female reproductive systems are the primary sexual characteristic.
They are formed by the genitals, which are the organs that carry out reproduction.
The female sex organs include the ovaries and uterus.
The male sex organs include the testicles and the penis.

The ovaries produce female sex cells called ovules.
The testicles produce male sex cells called spermatozoa or sperm cells.
Fertilisation occurs in the Fallopian tubes. Fertilisation is the union of an ovule and a sperm to
form a zygote. The zygote is the first cell of a new being. It divides many times to form an embryo.

Pregnancy is the period between fertilisation and the birth of the baby.
Birth is the moment when the baby exits the mother’s body through the vagina.


Answer the following questions.
1. When do secondary sexual characteristics develop?
2. Do men or women have more facial and body hair?
3. What gland sends hormones to the genital organs?
4. Which sexual characteristics do we have when we are born?

Answers: 1. at puberty. 2. men. 3. the pituitary gland. 4. primary
sexual characteristics.

  Read the definitions and write the corresponding words.
1. These organs produce sperm cells.
2. This is the bag of skin which contains the testicles.
3. This is the organ where the baby develops during pregnancy.
4. These connect the ovaries to the uterus.
5. These organs produce the female eggs necessary for reproduction




Follow development from fertilisation to birth.
 http://www.med.upenn.edu/meded/public/berp/ overview/BV_1.html
  Double click on days or weeks for images.

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