Senses
Practice Test
1.
What is the opening in the center of the iris?
a.
pupil
b.
retina
c.
cornea
d.
sclera
Hint
2.
_____ are one kind of nerve cell in the retina of the eye.
a.
Pyramids
b.
Cubes
c.
Cones
d.
Towers
Hint
3.
The ____ is the common name of one of the bones in the middle ear.
a.
hammer
b.
saw
c.
axe
d.
rasp
Hint
4.
What nerve carries information about smell or odor to the brain?
a.
olfactory nerve
b.
spinal cord
c.
auditory nerve
d.
optic nerve
Hint
5.
What is the structure at the back of the inside of the eye?
a.
lens
b.
retina
c.
iris
d.
sclera
Hint
6.
What fatlike chemical is made by cells in the ear canal?
a.
ear wax
b.
mucus
c.
vitreous humor
d.
bile
Hint
7.
What is the general term for parts of the nervous system that tell an animal what is going on around it?
a.
ears
b.
nerves
c.
sense organs
d.
eyes
Hint
8.
What is the nerve that takes messages from the ear to the brain?
a.
olfactory nerve
b.
optic nerve
c.
spinal cord
d.
auditory nerve
Hint
9.
What is the jelly-like material inside the eye?
a.
blood
b.
vitreous humor
c.
urine
d.
cytoplasm
Hint
10.
What units are used to measure the loudness of sound?
a.
meters
b.
decibels
c.
volts
d.
degrees
Hint
