Name Date Class
LESSON 2
The Senses
Directions: On each line, write the term from the word bank that correctly completes each sentence. Some terms
might be used more than once.
Incusbalancebraincochleaconescornea
Malleushomeostasisirislensreceptorsretina
rodssmellStapestastetouch
1.All parts of the sensory system have , which are special
structures that detect stimuli.
2.Light enters the eye through an opening called the .
3.The and the slightly change the
direction of light rays entering the eye.
4.The of the eye contains two kinds of light-sensitive cells, the
and the .
5.The three small bones of the middle ear are the , the
, and the .
6.The converts sound waves transmitted through the ear into
messages that are sent to the brain.
7.As well as enabling us to hear sounds, the ears also help us maintain
our .
8.and stimuli are received in the
same area of the .
9.The hands and feet are sensitive to stimuli.
10.All five of our senses help us maintain .
Control and Coordination33
Name Date Class
LESSON 2
The Senses
Key Concept How do you learn about your environment?
Directions: On the line before each term below, write eye if it is part of the eye and ear if it is part of the ear.
1.stapes
2.iris
3.cones
4.semicircular canals
5.cochlea
6.optic nerve
7.incus
8.pupil
9.rods
10.malleus
11.What vision problem is caused when an image is focused too far in front of the retina?
12.What are the three sections of the ear?
13.Besides enabling hearing, what is an important function of the ears?
Control and Coordination39
Name Date Class
LESSON 2
The Senses
Directions: On each line, write the term from the word bank that correctly replaces the underlined words in each
sentence. NOTE: You may need to change a term to its plural form.
Tympanic membrane receptor retina rodsensory systemwave
1.Rod cells and cone cells are photoreceptors that are located in the area at the back of
your eye.
2.Vision, hearing, smell, taste, and touch are components of the part of your nervous
system that senses the environment.
3.Sound is the result of vibrations of matter that are detected by receptors in the ear.
4.Special structures in your sensory system detect stimuli.
5.Sound waves cause the thin membrane that separates the outer ear and the inner ear
to vibrate.
6.Special photoreceptors distinguish the shapes of objects and help you see in dim light.
Control and Coordination