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Erstellt von Benito Román Guerrero Blanco
vor mehr als 7 Jahre
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Why do we need to reproduce?
What would happen if we did not?
Humans reproduce by sexual reproduction? What is another type of reproduction?
Stages of our live
What are the sexual characteristics?
How can they be?
Examples of secondary sexual differences.
What is the puberty?
How does it happen?
When does it happen?
The female reproductive system ...
Parts or female reproductive system.
The female reproductive system with labels ...
Ovaries
The fallopian tubes
The uterus
The cervix
The vagina
The vulva
Puberty in girls
The menstrual cycle
What is the menstruation?
The menstrual cycle (image)
When do women stop menstruating?
What role does the brain play during puberty?
What secondary changes occur in girls during the puberty?
Explain what happens to an ovum if it not fertilised.
What happens when a woman has no ova left?
The male reproductive system ...
Parts of the male reproductive system ...
The male reproductive system with labels
The testicles
The scrotum
The semen
The vas deferens
The prostate
The penis
The urethra
Puberty changes in boys.
Genes
Which part of the body secretes testosterone? What does testosterona do?
What changes do boys experience during puberty?
How are male and female sex cells different?
What two functions does the penis have?
Write the words in the correct order from the production of sperm to ejaculation.
Sexual reproduction in humans
1. Fertilisation ...
Process of fertilisation.
How many sperm are needed for fertilisation to ocurr?
The zygote (two weeks) ...
2. Development of the embryo (from 3 to 8 weeks)
3. Development of the foetus (from 9 weeks until the end of pregnancy)
What protects the foetus during prenancy?
How does the foetus receive oxygen and nutrients during pregnancy?
What is the umbilical cord?
4. Birth
Stages of birth ...
What is the pregnancy?