Welcome to the website of the
Southwest Virginia MS Support Group

 

 

 

The Human Brain

SOURCE: www.Mult-Sclerosis.org

 

Click for info on MS and the Frontal Lobe Click for info on MS and the Cerebellum Click for info on MS and the Parietal Lobe Click for info on MS and the Occipital Lobe Click for info on MS and the Medulla Click for info on MS and the Pons Click for info on MS and the Midbrain Click for info on MS and the Corpus Callosum Click for info on MS and the Limbic Lobe Click for info on MS and the Pituitary Gland Click for info on MS and the Thalamus Click for info on MS and the Hypothalamus

 

 

The brain and the spinal cord form the Central Nervous System  (CNS). Multiple sclerosis is a disease that attacks the nerve cells (neurons) in regions of the CNS called the white matter. These are regions where the neurons are sheathed in an insulating substance called myelin which is the primary target of the disease.

 

Here is a diagram of the brain. Move your mouse over this image to highlight different areas. By clicking on a highlighted region, you will be transferred to a page describing how multiple sclerosis can affect that region. The full-functionality of the image will take a little time to load).

 

 

The Cerebellum

The cerebellum is responsible for coordinating movement, planning, motor activities, learning and remembering of physical skills and for some cognitive abilities.

 

 

The Cerebral Cortex

The is a structure within the brain that plays a key role in memory, attention, perceptual awareness, thought, language, and consciousness.

 

 

The Corpus Callosum

The job of the corpus callosum is to route communication between the two hemispheres. Humans have developed an asymmetry of the brain whereby the two hemispheres are specialized in different functions and this, perhaps, is partly responsible for our great intellectual abilities.

 

 

The Frontal Lobes

The frontal lobes are located behind the forehead and to much of the work of complex thinking link planning and responding.

 

 

The Hypothalamus

The hypothalamus is an area of the brain that produces hormones that control thirst, hunger, body temperature, sleep, moods, sex drive, and the release of hormones from various glands, primarily the pituitary gland.

 

 

The Limbic Lobe

The Limbic System influences Emotions, the Visceral Responses to those emotions, Motivation, Mood, and sensations of Pain and Pleasure. One of the major sources of sensory input into the Limbic System is the Olfactory Nerves.

 

 

The Medulla Oblongata

The fibers on the right side of the medulla cross to the left and those on the left cross to the right. As a result, each side of the brain controls the opposite side of the body. The medulla also controls the heartbeat, the rate of breathing, and the diameter of the blood vessels and helps to coordinate swallowing, vomiting, hiccupping, coughing, and sneezing.

 

 

The Midbrain

Midbrain/ Mesencephalon- the rostral part of the brain stem, which includes the tectum and tegmentum. It is the anterior part has the cerebral peduncle, which is a huge bundle of axons traveling from the cerebral cortex through the brain stem and these fibers (along with other structures) are important for voluntary motor function.

 

 

The Occipital Lobes

The occipital lobes are the center of our visual perception system

 

 

The Parietal Lobes

The parietal lobes can be divided into two functional regions. One involves sensation and perception and the other is concerned with integrating sensory input, primarily with the visual system.

 

 

The Pituitary Gland

The pituitary gland is one of the body’s endocrine glands. It is sometimes called the “master gland,” because it controls the functions of other endocrine glands.

 

 

The Pons

The Pons connects the BrainStem with the balancing control of the Cerebellum.

 

 

The Thalamus

The thalamus is part of the limbic system, the region of the brain largely associated with the emotions.


The Cell Structure of the Brain

SOURCE: www.neurosurgerytoday.org

 

The brain is made up of two types of cells: neurons and glial cells, also known as neuroglia or glia. The neuron is responsible for sending and receiving nerve impulses or signals.  Glial cells are non-neuronal cells that provide support and nutrition, maintain homeostasis, form myelin, and facilitate signal transmission in the nervous system . In the human brain, glial cells outnumber neurons by about 50 to one. Glial cells are the most common cells found in primary brain tumors.