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TOPIC 2

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Cerebellum
Cerebrum
Spinal cord
Brainstem
Regulates the functions of our internal organs.
Controls involuntary movements.
Coordinates movements.
Controls voluntary movements , thoughts and memories.

Central nervous system functions

Optic nerve
Cornea
Pupil
Lens
Retina

The sense of sight. Parts

Ear canal
Ear
small bones
Cochlea
Eardrum
Auditory nerve

The sense of hearing. Parts

The eardrum vibrates when the sound reaches it.
The cochlea detects the vibrartions and send the information along the auditory nerve.
The three small bones also start to vibrate.
The ear detects sound vibrartions which travel along the ear canal.

How our sense of hearing work.

Nasal cavity
Olfactory epithelium
Nostrils
Olfactory nerve

The sense of smell. Parts

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