NERVOUS SYSTEM AND THE SENSES

1. The part of the eye that focuses light is the:
b.lens.
2. The part of the eye that controls how much light enters the eye is the:
a.iris.
3. The part of the eye that converts light into electrical energy is the:
c.retina.
4. Both eyes are needed to judge the distance of an oncoming car:
true.
5.The semi-circular canals are the part of the ear used to detect the direction of sound.
false.
6. A reflex action means that your hand is being drawn away from a hot plate before the brain is aware that you are in pain.
true.
7. The part of the ear that converts vibrations in to electrical signals is the:
a.ear drum.
8. The part of the ear that carries electrical signals to the brain is the:
d.auditory nerve.
9. The part of the brain that controls balance and muscle coordination is the:
a.cerebellum.
10. The part of the brain that controls the breathing rate is the:
b.medulla.