Upload
jamal-bowman
View
53
Download
0
Tags:
Embed Size (px)
DESCRIPTION
BRAIN STEM- MEDULLA. Brainstem. Performs spinal cord-like functions for the head Contains LMN for head muscles Initial processing of general afferent information concerning head. Conduit function. Ascending tracts reach thalamus and cerebellum Descending tracts reach spinal cord - PowerPoint PPT Presentation
Citation preview
BRAIN STEM- MEDULLA
Brainstem
• Performs spinal cord-like functions for the head
• Contains LMN for head muscles• Initial processing of general afferent
information concerning head
Conduit function
• Ascending tracts reach thalamus and cerebellum
• Descending tracts reach spinal cord• Many tracts do not run through straight-
frequent involvement of relay nuclei
Cranial nerve functions
• Cranial nerves are head’s equivalent of spinal nerves
• Involved in olfaction, sight, hearing, equilibrium and taste
• Olfactory → telencephalon• Optic → diencephalon
• The rest project to or emerge from brainstem• Collection of sensory and motor nuclei related
to cranial nerve function at various levels in brainstem
Integrative function
• Complex motor patterns• Regulation of cardiovascular and respiratory
activity• Some regulation of consciousness [function of
reticular formation in central core of brainstem]
Level of pyramidal decussation
Level of sensory decussation
Components of inferior cerebellar peduncle