Myelin

Conversations in society often revolve around experiences that people share. In American society, for instance, people may discuss entertainment, politics, or fashion since most people are likely to have stories that relate to these topics. Illness is a topic that can be discussed among people from all over the world. Nearly all people have encountered illness whether it is from a personal or vicarious experience. The rich and the poor, men and women, the elderly and the young alike will all…

Adolescence is generally a stressful life stage for most individuals. An adolescent typically has a wide variety of issues to consider during this time period in their life- friends, family, school, etc. However, throw an illness such as cancer or diabetes into this already tumultuous period, and this life stage becomes even more complicated than most people ever think possible. In this paper, I will begin by introducing the specific illness that I will be discussing throughout the essay, and I…

Peripheral neuropathy is a condition which impacts the peripheral nervous system and impacts the communication between the brain and spinal cord to the other areas of the body. Neuropathy can be caused by damage to the axons or the myelin sheath that provides a protective coating and a form of insulation to the axon. If the connections between the main brain and spinal cord are severed, there are certain symptoms that occur including miscommunication between muscles and the neurons…

ALZHEIMER’S DISEASE An estimated 5.2 million Americans currently are afflicted with Alzheimer’s disease, usually called AD. Age is the highest risk factor. From studies conducted by the Center for Disease Control and Prevention we learn that AD is now the sixth leading cause of death in this country, but it leaps to fifth place for those who have already reached the age of sixty-five. By age eight-five an estimated thirty-two percent of Americans have contracted full-blown AD. Women are at far…

People question. How it is caused?, how can it be treated?, what symptoms could occur through brain cancer? Many people suffer from a type of cancer. One cancer that is good to learn is, brain cancer. You can’t walk to a local store and ask for medicine to cure this disease. To treat brain cancer you may have to visit your local doctor. This disease takes a process that may slowly progress like a turtle going to the shore. Some people have it for a lifetime. But some live with it for a short…

(frontal, parietal, occipital, temporal) and the cerebellum. DRAW!!! 4. In a drawing of a neuron (like the one on pp. 146-147 in the text), be prepared to identify and to define the following structures: ******* cell body myelin sheath dendrites axon synapse synaptic knobs 5. Define the following: ipsilateral control- if symptoms were on the same side as the lesion contralateral control- sensory input, motor input; “the left hemisphere of the motor cortex…

are penetrated throughout by free nerve endings of Aδ and C fibres. Aδ-fibres typically exhibit medium-sized cell bodies, thinly myelinated axons and intermediate conduction velocities (9). C-fibres on the other hand exhibit small cell bodies, no myelin sheath and slow conduction velocities (9). Both types of fibres aid in thermotransduction (9). Specific thermosensitive channels are believed to be associated with these free nerve endings, working in concert to orchestrate an appropriate…