Cranial Nerve Lab Report
Anatomy & Physiology I Cranial Nerve Lab Report: Zoe’s Case
Annastelle L. Cohen, Brandi Brown, Mariann Killen
Howard Community College
BIOL-203: Anatomy & Physiology I
Professor Canham
April 26, 2016
Introduction
There are twelve pairs of cranial nerves associated with the human brain that all have individual and essential functions. They are represented by a name that is followed by a Roman numeral. The cranial nerves are organized in a cranial to caudal sequence (Howard Community College, 2015, p. 188).
Cranial Nerve Name Cranial Nerve Function
Olfactory nerve
(CN I) Sensory nerve that transmits olfactory information to the brain
(Howard Community College, 2015, p. 189).
Optic nerve
(CN II) Sensory nerve that transmits …show more content…
The oculomotor nerve is examined using three different procedures: one to test motor function, one to test pupillary constriction, and another to test accommodation (Howard Community College, 2016, p. 191). The procedure to test motor function involves having the test subject follow with their eyes either one’s finger or a pen that traces an H shape, as well as assessing the eyelid position to see whether it is normal or drooping (Howard Community College, 2015, p. 191). The procedure to test pupillary constriction begins with viewing the test subject’s pupil shape and size to see whether they are oval or round and to see if the right and left are of equal size (Howard Community College, 2015, p. 191). This test is followed by another that involves directing a pen light approximately twenty centimeters to the side of the eye into the test subject’s pupil to see if it constricts and if the constriction is consensual (Howard Community College, 2015, p. 191). Lastly, the procedure to test for accommodation is used to see convergence of the eyes and is performed by having the test subject follow a pencil that begins about one meter in front of them and moves closer until it is approximately three centimeters in front of their nose (Howard Community College, 2015, p.
Annastelle L. Cohen, Brandi Brown, Mariann Killen
Howard Community College
BIOL-203: Anatomy & Physiology I
Professor Canham
April 26, 2016
Introduction
There are twelve pairs of cranial nerves associated with the human brain that all have individual and essential functions. They are represented by a name that is followed by a Roman numeral. The cranial nerves are organized in a cranial to caudal sequence (Howard Community College, 2015, p. 188).
Cranial Nerve Name Cranial Nerve Function
Olfactory nerve
(CN I) Sensory nerve that transmits olfactory information to the brain
(Howard Community College, 2015, p. 189).
Optic nerve
(CN II) Sensory nerve that transmits …show more content…
The oculomotor nerve is examined using three different procedures: one to test motor function, one to test pupillary constriction, and another to test accommodation (Howard Community College, 2016, p. 191). The procedure to test motor function involves having the test subject follow with their eyes either one’s finger or a pen that traces an H shape, as well as assessing the eyelid position to see whether it is normal or drooping (Howard Community College, 2015, p. 191). The procedure to test pupillary constriction begins with viewing the test subject’s pupil shape and size to see whether they are oval or round and to see if the right and left are of equal size (Howard Community College, 2015, p. 191). This test is followed by another that involves directing a pen light approximately twenty centimeters to the side of the eye into the test subject’s pupil to see if it constricts and if the constriction is consensual (Howard Community College, 2015, p. 191). Lastly, the procedure to test for accommodation is used to see convergence of the eyes and is performed by having the test subject follow a pencil that begins about one meter in front of them and moves closer until it is approximately three centimeters in front of their nose (Howard Community College, 2015, p.