Adductor Longus Muscle
Organization of the Cerebrum
- A thin layer of gray matter known as the cerebral cortex is found immediately beneath the convoluted surface of the cerebrum.
- Even though the cortex is less than 5 millimeters in thickness, it contains approximately 70-75 of the body’s neurons.
- This is where you perform language related tasks, image sensations, form complex thoughts, make judgments, and plan and execute motor movements.
- Deep to the cerebral cortex lies an expanse of white matter called the cerebral medulla, which is composed largely of tracts of myelinated axons.
- The impulses carried by these tracts allow communications between different regions of the cerebral cortex. They also link the cerebral cortex to other parts of the brain and spinal cord.
- Three pairs of subcortical nuclei (or gray matter) are embedded in the the white matter of the cerebral medulla.
- The oval and C-shaped nuclei lie lateral to the thalamus of the diecephalon and belong to a larger group of nuclei called the basal nuclei (or basal ganglia).
- The basal nuclei help the cortex and cerebellum plan and execute motor movements.