brain stem and cerebellum filip barinka. brain-stem critically important part of the central nervous...
TRANSCRIPT
Brain-stem
• Critically important part of the central nervous system, contains centers that take control of consciousness, cardiorespiratory regulation and many important reflexes.
• Complex structure - contains different groups of nuclei and fiber pathways.
Fiber pathways in brain stem
• Pathways beginning/terminating in brain- stem
• Pathways passing through the brain stem (but all of them give of collaterals to structures in the brain stem).
Spino-bulbo-thalamo-cortical pathway2 -most important to learn- ascending pathways
Spino-thalamic pathway
All these transversal sections with descriptions you can find at our website.
Cranial nerve nuclei (dorsal view of the brain stem)
Somatic motor
Two groups can be distinguished, the medial oneandthe lateral one.The lateral one is described in english-written textbooks as a special-visceral motor group of nuclei.
Cranial nerve nuclei (dorsal view of the brain stem)
Somatic motor
Visceral motor,in english-written booksusually described as general visceral motor group.
Cranial nerve nuclei (dorsal view of the brain stem)
Somatic motorVisceral motor
Visceral afferentSomatic afferent
Cranial nerve nuclei (dorsal view of the brain stem)
Somatic motorVisceral motor
Visceral afferentSomatic afferentSpecial somatic afferent
You can find this picture also with describtion at our website.
Proprioception frommasticatory muscles
Somatic motor fibers- masti-catory musclesGentle touch sensitivity, pressure,…
Pain and temperatureperception
Somatic afferent and somaticmotor nuclei of N. trigeminus
Reticular formation
• Complex of interconnected nuclei and smaller groups of neurons in the brain stem.
• Roughly equivalent to Rexed laminas VII and X in the spinal cord.
• Integrational and control center of many basic life functions (consciousness, hart rate, blood pressure, respiration,…) and reflexes.