EXERCISES, LESSON 1
INSTRUCTIONS. The following exercises are to be answered by writing the answer in
the space provided. After you have completed all the exercises, turn to the solutions
following the exercises and check your answers.
1.
Define sensation, in its broadest meaning. ______________________________
________________________________________________________________
2. List the four conditions which must be present for a sensation to occur.
a. _______________________________________.
b. _______________________________________.
c.
_______________________________________.
d. _______________________________________.
3.
List the three tunics (layers) of the eyeball.
a. _______________________________________.
b. _______________________________________.
c.
_______________________________________.
4.
The ________________________________ layer of the eyeball contains three
zones of impulse-conducting neurons.
5.
Light enters the eyeball through a hole in the ________________, one of the
parts of the vascular tunic.
6.
The iris dilates and constricts thus, regulating ____________________________
___________________________________________________.
MD0582
1-20