Difference between spinal and cranial nerves:
How many of each?
Spinal nerves emerge from spinal chord (31 pairs)
Cranial nerves emerge from forebrain or brainstem (12 pairs)
Attachment site for CN I and II?
Forebrain
Attachment site for CN III and IV?
Midbrain
Attachment for CN V-VIII?
Pons/Pontomedullary Jnc.
Good reason to know location of CN attachment to brainstem?
General idea where nucleus is located.
Alar plate becomes ________ nuclei.
Sensory
Basal plate becomes ________ nuclei.
Motor
Location of “visceral zone”:
adjacent to sulcus limitans.
“packing material” surrounding CN nulcei which is crucial to our survival (arousal, respiration, swallowing, HR):
reticular formation
“autopilot” type of coordinated response in which neurons are hardwired together in such a way that pools of neurons are activated in the right order and timing to make something happen (ie. chewing, swallowing, breathing)
Pattern generators
Draw some cross sectional pics!
Slides 20-35