Pixelated Brain: Neuroanatomy for Medical Students

PROJECTIONS from the CEREBELLAR CORTEX to the DEEP NUCLEI

UNLABELED

ATLAS - 1 - 2 - 3 - 4

DORSAL COL - MED LEM

ANTEROLATERAL

TRIGEMINAL

ALL SENSORY

MOTOR - 1 - 2 - 4

CEREBELLUM - 2

THE VAGUS NERVE

CRANIAL NERVES

x- PIXBRAIN HOME _ _ MOD 6 HOME _ _ I WANT TO -x

key - 2 - 1 - caudal - SLIDE 4 -- rostral - 1 - 2 - key

A quick look at this slide tells us something about the internal anatomy of the cerebellum. The cerebellum is divided into lateral, intermediate and vermal zones. Each projects to its own set of deep nuclei, and the function carried out by each zone is distinct from that of the others.

_____1. The lateral hemisphere or cerebrocerebellum, which receives its input from the contralateral cerebral hemisphere, projects back to this same structure and is involved in motor

planning.

_____2. The intermediate (paramedian) region or spinocerebellum which receives inputs both from the contralateral cerebral hemisphere and the ipsilateral spinal cord. This region is concerned with the adjustment of motor activity involving the distal parts of the body

_____3. The midline region or vermis. This region actually carries out two rather different functions. It shares with the intermediate region the job of adjusting motor activity, in this case involving proximal and axial muscles. Parts of the vermis, however, have reciprocal connections with the vestibular nuclei. This subdivision of the vermis is termed the vestibulocerebellum and is concerned with monitoring and adjusting vestibular reflexes.

Each region of the cerebellar cortex projects out of the cerebellum by way of its own "deep" nucleus. Kingsley's Figure 9.3 summarizes much of this information.

PROJECTIONS from the CEREBELLAR CORTEX to the DEEP NUCLEI
UNLABELED ATLAS - 1 - 2 - 3 - 4 DORSAL COL - MED LEM ANTEROLATERAL TRIGEMINAL ALL SENSORY MOTOR - 1 - 2 - 4 CEREBELLUM - 2 THE VAGUS NERVE CRANIAL NERVES


			x- PIXBRAIN HOME _ _ MOD 6 HOME _ _ I WANT TO -x key - 2 - 1 - caudal - SLIDE 4 -- rostral - 1 - 2 - key A quick look at this slide tells us something about the internal anatomy of the cerebellum. The cerebellum is divided into lateral, intermediate and vermal zones. Each projects to its own set of deep nuclei, and the function carried out by each zone is distinct from that of the others. _____1. The lateral hemisphere or cerebrocerebellum, which receives its input from the contralateral cerebral hemisphere, projects back to this same structure and is involved in motor
planning. _____2. The intermediate (paramedian) region or spinocerebellum which receives inputs both from the contralateral cerebral hemisphere and the ipsilateral spinal cord. This region is concerned with the adjustment of motor activity involving the distal parts of the body _____3. The midline region or vermis. This region actually carries out two rather different functions. It shares with the intermediate region the job of adjusting motor activity, in this case involving proximal and axial muscles. Parts of the vermis, however, have reciprocal connections with the vestibular nuclei. This subdivision of the vermis is termed the vestibulocerebellum and is concerned with monitoring and adjusting vestibular reflexes. Each region of the cerebellar cortex projects out of the cerebellum by way of its own "deep" nucleus. Kingsley's Figure 9.3 summarizes much of this information.