Stand as far away from the corner of a room as you can, moving to a larger room might help.

directions:
stand as far away from the corner of a room as you can, moving to a larger room might help.
with both eyes open hold a pencil at arms length in front of you, placing the pencil in the corner.
now, close your left eye and observe what happens to the image of the pencil.
alternate by closing only your right eye and observe what happens.

6. this illustrates that humans have a dominant eye just as they write with their dominant hand and descend stairs leading with their dominant leg. if the pencil remains in the corner with one eye open, this signifies the dominant eye. if the pencil moves to the side, this means it is not your dominant eye. which is your dominant eye? explain why you know this.


STRUCTURES OF THE EAR
1.) semicircular canals
2.) organ of corti
3.) eustachian tube
4.) tympanic membrane
5.) auditory canal
6.) ossicles

what pathway do sound waves take through the ear to be detected by the brain? record your four digit answer in the spaces provided
_ _ _ _


40. when reading, a person with astigmatism will see some lines in sharp focus while others appear blurred. astigmatism is caused by the
A.) number of cones on some parts of the retina being deficient
B.) curvature of the cornea or lens not being symmetrical
C.) lens becoming cloudy and rigid
D.) inability of the iris to contract or dilate

21. The bodys return to homeostatic levels after vigorous excersise involves
A.) inhibition of both the parasympathetic and sympathetic nervous systems
B.) stimulation of the sympathetic nervous system and inhibition of the parasympathetic nervous system
C.) stimulation of the parasympathetic nervous system and inhibition of the sympathetic nervous system
D.) stimulation of both the parasympathetic and sympathetic nervous systems.