BIOLOGY 173 Lecture Notes - Lecture 31: Olfactory Bulb, Cranial Nerves, Peripheral Nervous System

• School: Bloomsburg University
• Department: Biological Allied Health Sci
• Course: BIOLOGY 173
• Professor: Surmacz

Document Summary

Send signals to activate cerebrum: awake, alert, concentrating, aroused, whe(cid:374) (cid:374)euro(cid:374)s fatigue , sleep. What are cranial nerves: emerge from ventral surface of the brain, pass through the skull foramina and supply structures in the head and neck. How many are there: 12 pair, roman numerals indicate the order in which the nerves arise from the brain from anterior to posterior, names indicate function and distribution. How are cranial nerve functions classified: special sensory carry signals to brain related to special senses, sensory carry signals to brain, motor carry signals away from brain, mixed carries signals to and from brain. Distribution: transmits special sensory impulses related to smell from nose to olfactory bulb: optic. Distribution: transmits special sensory impulses related to vision from retina to brain: oculomotor. Distribution: conveys impulses that control eye movement, regulation of pupil size, and accommodation of lens for near vision: trochlear. Distribution: conveys impulses that control eye movement: trigeminal (three branches)