Human reproduction

The presentation was too long. I divided it into two halves:the reproductive systems and the reproductive process.
Finish these sentences:
Testes can not produce sperm until ...
If a mature ovule does not meet with a mature spermatozoid,then...
The previous affirmation is related to the menstruation because...
Labour stages are:...
After birth we have belly button because...

The reproductive systems

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The reproductive process

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Write a comment and explain a new thing you have learnt from the presentations.

The respiratory system

In this presentation you can observe how our lungs get the oxygen we need to live.

The respiratory system

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What is the meaning of :"exchange of gases". Which are the gases (involved in this process)?

The nervous system.

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Watch it carefully to discover how this system works...

Nervous system

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What is a neuron? What is its function?

Human endocrine system

Our body uses different substances to work...Do you Know which glands produce them... Read the following presentation.

Endocrine system

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Write the most important endocrine glands and name one hormone secreted by each one of them.

Human circulatory system

In this presentation you can find out some information about our heart,blood and circulation.

The circulatory system

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Answer this question:
What is the difference between the pulmonary circulation and sistemic circulation?. Send your comments

Human musculature

You can learn more about muscles and how they work...
Send one comment and write what happens when a muscle contracts.

Muscles and movement

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Muscles and bones

Our skeleton works together with our muscles.Do you Know what they are, how they grow,how can we move...

Watch this presentation and learn a lot of things.