6th Grade Science Human Body

9 terms by Ccsexton 

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Odor Molecules

Our nose is able to discriminate between different _______ in the air.

Chemicals

Odor molecules are tiny bits of _____ floating in the air.

Odor Molecules

Come from food, flowers, rotten garbage, or other things with smells.

Olfactory Receptors

Microscopic nerve cells that detect smell and send the signals onto the brain (size of postage stamp)

Scent

Many odors are not just a single ____ but a whole mixture of them.

Cilia

small hair-like structures far back in the nasal cavitiy that sweep back and forth.

Mucus

thin, clear ____ that dissovles odor molecules not already in vapor form.

Cilia

Covered with a thin, clear mucus

Brain

must analyze over 300 different odor molecules to identify the smell of a rose

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