The cerebellum, Latin for “little brain Brain The part of central nervous system that is contained within the skull (cranium). Arising from the neural tube, the embryonic brain is comprised of three major parts including prosencephalon (the forebrain); mesencephalon (the midbrain); and rhombencephalon (the hindbrain). The developed brain consists of cerebrum; cerebellum; and other structures in the brain stem. Nervous System: Anatomy, Structure, and Classification,” is located in the posterior cranial fossa Posterior cranial fossa The infratentorial compartment that contains the cerebellum and brain stem. It is formed by the posterior third of the superior surface of the body of the sphenoid (sphenoid bone), by the occipital, the petrous, and mastoid portions of the temporal bone, and the posterior inferior angle of the parietal bone. Skull: Anatomy, dorsal to the pons Pons The front part of the hindbrain (rhombencephalon) that lies between the medulla and the midbrain (mesencephalon) ventral to the cerebellum. It is composed of two parts, the dorsal and the ventral. The pons serves as a relay station for neural pathways between the cerebellum to the cerebrum. Brain Stem: Anatomy and midbrain Midbrain The middle of the three primitive cerebral vesicles of the embryonic brain. Without further subdivision, midbrain develops into a short, constricted portion connecting the pons and the diencephalon. Midbrain contains two major parts, the dorsal tectum mesencephali and the ventral tegmentum mesencephali, housing components of auditory, visual, and other sensorimotor systems. Brain Stem: Anatomy, and its principal role is in the coordination Coordination Cerebellar Disorders of movements. The cerebellum consists of 3 lobes on either side of its 2 hemispheres and is connected in the middle by the vermis. Three paired peduncles link the cerebellum to the brainstem and diencephalon Diencephalon The paired caudal parts of the prosencephalon from which the thalamus; hypothalamus; epithalamus; and subthalamus are derived. Development of the Nervous System and Face. Much like the cerebral cortex Cerebral cortex The cerebral cortex is the largest and most developed part of the human brain and CNS. Occupying the upper part of the cranial cavity, the cerebral cortex has 4 lobes and is divided into 2 hemispheres that are joined centrally by the corpus callosum. Cerebral Cortex: Anatomy, the cerebellum has a cortex of gray matter Gray matter Region of central nervous system that appears darker in color than the other type, white matter. It is composed of neuronal cell bodies; neuropil; glial cells and capillaries but few myelinated nerve fibers. Cerebral Cortex: Anatomy on the surface.
Last updated: Nov 21, 2022
Cerebellar peduncles and their connections:
The majority of neuronal cell bodies are located in the cortex, which can be divided into 3 layers:
Granular cell layer:
Purkinje cell layer:
Cortical interneurons can be divided into 2 categories:
Cerebellar nuclei consist of 4 pairs of areas:
Many afferents pass through the 3 cerebellar peduncles to the cerebellar cortex. There are 2 extracerebellar excitatory glutamatergic afferent Afferent Neurons which conduct nerve impulses to the central nervous system. Nervous System: Histology systems:
Efferent Efferent Neurons which send impulses peripherally to activate muscles or secretory cells. Nervous System: Histology pathways of the cerebellum pass from the cerebellar nuclei to the following:
The cerebellum can also be divided into 3 regions based on connections:
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