Quiz 2: Human Senses

Which part of the eye controls the size of the pupil?

• Sclera

• Iris

• Cornea

• Lens

What type of photoreceptors are sensitive to different colors of light?

• Rod cells

• Cone cells

• Ciliary muscles

• Choroid

The __ is the transparent layer that protects the eye and refracts light.

What is the function of the eardrum?

• Collects sound waves

• Amplifies sound vibrations

• Vibrates according to the frequency of sound waves

• Detects position of the head

Which part of the ear is responsible for converting sound vibrations into nerve impulses?

• Cochlea

• Eardrum

• Auditory nerve

• Ossicles

The __ balances the air pressure on both sides of the eardrum.

What do sensory cells for smell do when stimulated by chemical substances?

• Produce heat

• Generate sound

• Produce nerve impulses

• Release hormones

Where are the sensory cells for smell located?

• In the nasal cavity

• At the tip of the tongue

• In the ear canal

• On the skin

The sensory cells for smell are covered with a layer of __.

What are the tiny nodules on the surface of the tongue called?

• Taste buds

• Papillae

• Receptors

• Mucus