Natural Science: unit 3 | Baamboozle - Baamboozle

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Heart, lungs and life

Study Slideshow

What happens during inhalation?

The lungs open up and become bigger. Air leaves the body.

The lungs open up and become bigger. Air enters the body.

The lungs become smaller. Air leaves the body.

The lungs become smaller. Air enters the body.

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What happens during exhalation?

The lungs become bigger. Air enters the body.

The lungs become smaller. Air leaves the body.

The lungs become smaller. Air enters the body.

The lungs open up and become bigger. Air leaves the body.

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What happens in the alveoli?

There is an exchange of gases. The oxygen passes into the blood and the carbon dioxide passes into the alveoli.

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Which are the three types of blood vessels?

Arteries, veins and blood capillaries

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Which is the main organ of the circulatory system? What does it do?

The heart. It pumps blood around the body.

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How many cavities does the heart have?

Four cavities.

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How does blood move around the body?

Heart - Arteries (blood with oxygen) - body - veins (blood with carbon dioxide) - heart - lungs - heart

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What is created when a spermatozoon fuses with an ovum?

A zygote

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Where does the foetus develop?

In the uterus

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Where are the spermatozoa formed?

In the testicles

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Where are the ova formed?

In the ovaries

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How long does pregnancy last?

50 weeks

20 weeks

30 weeks

40 weeks

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How do we call the zygote when it implants in the wall of the uterus?

Embryo

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Why is the placenta important?

Because it provides nutrients and oxygen to the baby.

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What does the umbilical cord connect?

The placenta and the embryo/foetus

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What parts of the respiratory system do numbers 1, 2, 3 and 4 refer to?

nostrils, pharynx, larynx and trachea

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