00:00 / 00:00
Anatomy of the basal ganglia
Anatomy of the blood supply to the brain
Anatomy of the brainstem
Anatomy of the cerebellum
Anatomy of the cerebral cortex
Anatomy of the cranial meninges and dural venous sinuses
Anatomy of the diencephalon
Anatomy of the limbic system
Anatomy of the ventricular system
Anatomy of the white matter tracts
Anatomy clinical correlates: Anterior blood supply to the brain
Anatomy clinical correlates: Cerebellum and brainstem
Anatomy clinical correlates: Cerebral hemispheres
Anatomy clinical correlates: Posterior blood supply to the brain
0 / 1 complete
Now, we know what you are thinking. Don’t worry, here at Osmosis we are not telepathic, but by watching this video on the cerebral cortex, we know you have the brain on your mind, so let’s get to it!
The human central nervous system basically consists of the spinal cord and the brain, which includes the cerebrum, diencephalon, cerebellum, and brainstem.
Taking a closer look at the cerebrum, it consists of two nearly symmetrical halves, called the cerebral hemispheres, and the basal ganglia, also referred to as basal nuclei. Furthermore, each cerebral hemisphere is divided into four main lobes, the frontal, parietal, temporal, and occipital, as well as what has become to be known as the fifth lobe, the insula, or insular cortex.
If we were to cut through the cerebral hemispheres in the coronal plane, which means transecting from left to right and dividing the brain into rostral and caudal divisions, we would see the cerebral cortex. This is the outermost area of the cerebral hemispheres, and is composed of gray matter containing billions of nuclei, or neuronal cell bodies.
A cell body and its dendrites, along with its axon and synaptic terminal, collectively make-up a structure called a neuron. Neurons thus allow for information processing and communication with other neurons within the nervous system. The gray matter gets its name from its dark appearance during gross inspection.
Deep to the gray matter is the subcortical white matter, which is made up of myelinated axons connected to the nuclei of the gray matter. White matter gets its name because the myelination of the axons gives this area a white appearance on gross inspection.
The largest white matter tract is the corpus callosum, which sends signals between the two cerebral hemispheres essentially connecting them together.
Latest on COVID-19
Nurse Practitioner (NP)
Physician Assistant (PA)
Create custom content
Raise the Line Podcast
Copyright © 2024 Elsevier, its licensors, and contributors. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Cookies are used by this site.
Terms and Conditions
USMLE® is a joint program of the Federation of State Medical Boards (FSMB) and the National Board of Medical Examiners (NBME). COMLEX-USA® is a registered trademark of The National Board of Osteopathic Medical Examiners, Inc. NCLEX-RN® is a registered trademark of the National Council of State Boards of Nursing, Inc. Test names and other trademarks are the property of the respective trademark holders. None of the trademark holders are endorsed by nor affiliated with Osmosis or this website.