The feeling of a stimuli is called ____.

• pain

• sensation

• perception

• touch

The interpretation of the feeling of a stimuli is called ____.

• perception

• sensation

• touch

• pain

The weakest amount of a stimulus that can be sensed is called the absolute ____.

• top

• bottom

• threshold

• sensation

The 4 main tastes humans have is, bitter, sweet, salty and ____.

• smooth

• hot

• rough

• sour

Our sense of ____ comes from odors that are detected by receptor neurons high in the nostrils.

• smell

• taste

• touch

• hearing

Nose receptors send information about the odors to the brain by way of the ____ nerve.

• impulse

• olfactory

• pain

• nostril

Touch is any combination of pressure, ____ and pain.

• sense

• burning

• temperature

• itchiness

Pain starts at the point of contact, goes to the spinal cord, then to the ___, then to the cerebral cortex.

• nerves

• frontal lobe

• hypothalamus

• thalamus

The ____ focuses the image onto the retina.

• lens

• pupil

• cornea

• retina

The ____ is a smooth muscle that contracts to change the amount of light entering the eye.

• iris

• pupil

• lens

• cornea