Cerebellum: The cerebellum is considered the youngest brain region. It is known as the “little brain”, but it makes up 85% of the brain’s weight. Among the major structures comprising the central nervous system (CNS) is the cerebellum. Its surface layer or thick cortex is made of gray matter while white matter makes up its deeper regions. The cerebellum plays a role in maintaining balance, planning appendageal movements, and motor learning.
Sympathetic Ganglion: Sympathetic ganglia are the ganglia of the sympathetic nervous system. Responsible for the fight-or-flight response, these ganglia deliver information to the body in times of stress and impending danger. They are found close to either side of the spinal cord in long chains. The have around 20,000-30,000 nerve cell bodies.
Cerebral Cortex: This is a sharply folded region of the CNS which coordinates muscular activity throughout the body. The neurons of the cerebral cortex work to integrate sensory information and initiate voluntary motor responses. It has the following layers:
a. A thick outer molecular layer with scattered neuronal cell bodies
b. A thin middle layer consisting of very large Purkinje cells whose dendrites extend as branching baskets of nerve fibers
c. A thick inner granular layer made of densely packed neurons
REFERENCES:
Mescher, A. (2018). Junqueira’s basic histology : text and atlas (15th ed.). Mcgraw Hill Education.
Vedantu. (2021, April 14). Cerebellum. VEDANTU; Vedantu. https://www.vedantu.com/biology/cerebellum
Cerebellum: The cerebellum is considered the youngest brain region. It is known as the “little brain”, but it makes up 85% of the brain’s weight. Among the major structures comprising the central nervous system (CNS) is the cerebellum. Its surface layer or thick cortex is made of gray matter while white matter makes up its deeper regions. The cerebellum plays a role in maintaining balance, planning appendageal movements, and motor learning.
Sympathetic Ganglion: Sympathetic ganglia are the ganglia of the sympathetic nervous system. Responsible for the fight-or-flight response, these ganglia deliver information to the body in times of stress and impending danger. They are found close to either side of the spinal cord in long chains. The have around 20,000-30,000 nerve cell bodies.
Cerebral Cortex: This is a sharply folded region of the CNS which coordinates muscular activity throughout the body. The neurons of the cerebral cortex work to integrate sensory information and initiate voluntary motor responses. It has the following layers:
a. A thick outer molecular layer with scattered neuronal cell bodies
b. A thin middle layer consisting of very large Purkinje cells whose dendrites extend as branching baskets of nerve fibers
c. A thick inner granular layer made of densely packed neurons
REFERENCES:
Mescher, A. (2018). Junqueira’s basic histology : text and atlas (15th ed.). Mcgraw Hill Education.
Vedantu. (2021, April 14). Cerebellum. VEDANTU; Vedantu. https://www.vedantu.com/biology/cerebellum