UNIT 2 Natural 5º

It is a muscle that controls the amount of light that enters the eye.

• lens

• iris

• pupil

• retina

It transforms the sound vibrations into electrical signals in the inner ear.

• auditory canal

• eardrum

• cochlea

• auditory nerve

¿What part of the eye is it?

The air enters our nose trough the ..........

• taste buds

• smell receptors

• nostrils

• olfactory nerve

¿How do we call our tiny bumps in our tongue?

• repector cells

• papilae

• taste buds

• tongue buds

The central nervous system includes.....

• the brain

• the spinal cord

• the senses

• the bones

The ........ is the biggest part of our brain.

• skull

• cerebrum

• cerebellum

• spine

The .......... are the bones that protect our spinal cord.

• humerus

• vertebrae

• pelvis

• ribs

The locomotor system includes ..........................

• the skeleton

• the muscles

• the joints

• the senses

there are two types of muscles: voluntary and .............