Human Anatomy: CNS
CNS means central nervous system; this includes the brain and spinal cord. The brain is separated into two cerebral hemispheres that consist of the frontal, parietal, occipital, and temporal lobes. Additionally there are the cerebellum and brainstem that complete the ‘brain’ of the central nervous system. The brainstem is the connector to the twelve cranial nerves: Olfactory, Optic, Oculomotor, Trochlear, Trigeminal, Abduces, Facial, Acoustic, Glossopharyngeal, Vagus, Accessory and Hypoglossal, or the way I remember it: On Old Olympus Tiny Tots A Fin And German Viewed A Hop. From the brainstem attaches the second part of the CNS: the spinal cord.
The spinal cord is made up of the parts: cervical, thoracic, and lumbar; respectively the neck, midback, and lowerback. Throught which runs the spinal cord which relays important messages from the brain to the body. Another important aspect of the spine is its curvature. In a healthy spine there are four curves: cervical and lumbar lordosis, thoracic and sacral kyphosis, and the coccyx tailbone. These curves are important for balance, flexibility, and stress absorption and distribution.
The CNS is an extremely important part of a human if not the most important part; without it there would be no blood pressure or respiration center, facial movements or sensation, or higher thinking and interpreting stimuli.
References:
- Spineuniverse.com
- Clinical Syndromes in Neurology. Department of Neurology. Barbara Scherokman M.D.
July 20th, 2008 at 1:24 pm
July 20th, 2008 at 5:46 pm