KNES462_d6a copy

Throughway for sensory neurons assending target of

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: tter. • Throughway for sensory neurons assending • Target of cranial nerves 12 pairs--deal with sensory and motor coordination--and autonomical functions 10 KNES 462 ©FK ‘08 Brain Stem: Structures • Medulla oblongata: contains centers responsible for vital rf-- specail tissue goes through whole brainstem autonomic functions: breathing, control of heart rate, digestion (reticular formation); contains the ‘decussation’. • Pons: conveys movement information from cerebral pons--means bridge-hemispheres to cerebellum; contains cell groups hemispheres to cerebellum; contains cell groups projecting to the cerebellum via the ‘peduncles’, fiber bundles by which the cerebellum is attached to the pons. • Midbrain: contains neurons/nuclei pertaining to sensory / motor functions, eye movements, coordination of visual & auditory reflexes. 11 KNES 462 functional sig of brain stem--motor and sonsory processess and is required for consciousness ©FK ‘08 medial pathways-- Brain Stem: descending pathways I Again somatotopic organization: • medial pathways: proximal, axial muscles • lateral pathways: distal muscles pathways: distal muscles • (aminergic pathways: modulate excitability of motor pathways) 12 KNES 462 to not carry motor information ©FK ‘08 4 KNES 462 Brain Stem: descending pathways II • medial pathways terminate in the ipsilateral they do not cross over ventromedial part onto propriospinal neurons; – vestibulospinal tracts: carry information for reflex control of balance and...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online