Correlation Paper
Quarter 2 Muscles, Endocrine, Nervous ALS 1/16/2015
Ryan Ballard
Amyotrophic lateral sclerosis (ALS) is a fatal disease in which the motor neurons in the brain, brain stem, and spinal cord are attacked and killed over time. Also known as Lou Gehrigs disease (after the hall of fame baseball player), ALS belongs to a group of disorders described by the decay and death of motor neurons called the motor neuron diseases. Although there are many symptoms associated with ALS that appear to occur quickly and randomly, the progression of the disease has been known to vary according to the individual. Motor neurons are cells located in the central
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Efferent neurons carry the electrochemical signal back from sensory organs to the central nervous system. A neuron has three parts, the soma, the axon and the dendrites. The soma contains the nucleus which holds all the genetic information as well as other regular cell organelles which function to keep the cell alive. The axon is a long thin nerve fiber that creates electrical impulses and then sends them to where they are needed. The dendrites receive the electrochemical signals from the other units of the nervous system (What Is a Motor Neuron, n.d.). There are three main categories motor neurons are classified in: Somatic motoneurons, special visceral motoneurons, and general visceral motoneurons. Somatic motoneurons are directly involved in locomotion and the contraction of skeletal muscles. Special visceral motoneurons are involved with providing the branchial muscles (face and neck) with movement. General visceral motoneurons indirectly allow for the contraction of the cardiac muscle, as well as for the smooth muscles of the viscera (muscle in arteries). Since this type of motor neuron is indirectly controlled by the nervous system it cannot be consciously controlled ( …show more content…
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The brain is an organ that regulates body functions, behaviors, and emotions. Neurons are the cells that fulfill these functions. How do neurons do this? A neuron plays an important role in the central nervous system. Why? Because neurons regulate how we think, feel, and control our body functions. A typical neuron has three parts: cell body, axon, and dendrites. When a neuron receives an electrical impulse, that impulse travels
...e in the brain to deliver electrical stimulation to targeted areas that control movement (mayoclinic.com, 2013).
Amyotrophic Lateral Sclerosis, commonly referred to as ALS, is a disease that can alter the daily life of a human in monumental and unending ways. In one of her articles about ALS, Caroline Ingre (2015) states that the disease is a “fatal neurodegenerative disorder” and further supports this by noting how the disease is marked by the degeneration in motor neurons in the brain, brainstem, and spinal cord (p. 181). This basically means that
Amyotrophic Lateral Sclerosis is a progressive neurodegenerative disease that affects nerve cells in the brain and the spinal cord. Amyotrophic Lateral Sclerosis is better known as ALS or Lou Gehrig’s disease. Amyotrophic Lateral Sclerosis was not brought to International or national attention until Famous New York Yankees baseball player, Lou Gehrig, was diagnosed with it in 1939. Jon Stone, the writer and creator of Sesame Street, was also diagnosed with Amyotrophic Lateral Sclerosis. Amyotrophic Lateral Sclerosis is very deadly and it physically handicaps a person as it progresses. There are two types of Amyotrophic Lateral Sclerosis, Sporadic and Familial. Sporadic is the most common cause in some cases and Familial is inherited, which is rare. Amyotrophic Lateral Sclerosis is one of the most aggressive muscular atrophy disorders, it has many signs and symptoms, and it can be treated but cannot be cured.
Neurodegeneration is used mainly for diseases that are characterised by progressive loss of structure and function of neurons. There are many neurodegenerative diseases including amyotrophic lateral sclerosis that...
When a message comes to the brain from body parts such as the hand, the brain dictates the body on how to respond such as instructing muscles in the hand to pull away from a hot stove. The nerves in one’s skin send a message of pain to the brain. In response, the brain sends a message back dictating the muscles in one’s hand to pull away from the source of pain. Sensory neurons are nerve cells that carry signals from outside of the body to the central nervous system. Neurons form nerve fibers that transmit impulses throughout the body. Neurons consists of three basic parts: the cell body, axon, and dendrites. The axon carries the nerve impulse along the cell. Sensory and motor neurons are insulated by a layer of myelin sheath, the myelin helps
Amyotrophic lateral sclerosis, or ALS, is a degenerative disease affecting the human nervous system. It is a deadly disease that cripples and kills its victims due to a breakdown in the body’s motor neurons. Motor neurons are nerve cells in the brainstem and spinal cord that control muscle contractions. In ALS, these neurons deteriorate to a point that all movement, including breathing, halts. Muscle weakness first develops in the muscles of body parts distant from the brain, such as the hands, and subsequently spreads through other muscle groups closer to the brain. Such early symptoms as this, however, can hardly be noticed.
The neurons or brain cells are shaped like trees. Young brain cells, called soma, resemble an acorn or small seed of a tree. The seed sprouts limbs when stimulated, called dendrites. Further on in development, the cell will grow a trunk like structure called an axon. The axon has an outer shell, like the bark of a tree, called the myelin sheath. Finally, at the base of the cell, there are root-like structures called axon terminal bulbs. Through these bulbs and the dendrite of another cell, cells communicate with each other through electrochemical impulses. These impulses cause the dendrites to
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Lou Gehrig's disease, also called: ALS, amyotrophic lateral sclerosis is a progressive disease, meaning the disease gets worse over time. It affects nerves in the brain and the spinal cord by causing death of the neurons which control voluntary muscles. As the muscles get weaker, it gets harder to walk, eat, breathe, and talk (4).
The myelin sheath is a fatty substance that surrounds the axons of the nerves and provides protection. It allows messages to be sent rapidly and accurately to the axons from long distances (Serono, 2010). The axons are the part of the nervous system that allows electrical transmission of signals throughout the brain and spinal cord. Without these electrical transmissions, the body would not be able to function properly (Serono, 2010).
... Parsons, L.M., Bower, J., Xiong J., Li J., & Fox, P. (1996). Cerebellum Implicated in Sensory Acquisition and Discrimination Rather Than Motor Control. Science, 272, 545-547.
These electrical signals arise from ion fluxes produced by nerve cell membranes that are selectively permeable to different ions. Neurons and glia (cells that support neurons) are specialized cells for electrical signaling over long distances. Understanding neuronal structure is important for understanding neuronal function. The number of synaptic inputs received by each nerve cell in our (human) nervous system varies from 1-100,000! This wide range reflects the fundamental purpose of nerve cells, to integrate information from other neurons.
This is a neurodegenerative disease, meaning it results in progressive loss or death of neurons. It often starts off with effecting simple motor skills like writing and holding things, after a few months usually patients start losing the ability to walk, talk, or move any of their limbs. Although the brain trauma is what causes it, ALS has little-no-effect on the brain. This fatal disease is typically diagnosed around age 60 and most patients are given about 3-5 years to live after being diagnosed. It has been found that 10% of cases are shown as genetic. It was brought to attention that athletes were beginning to get diagnosed with ALS at a younger age than most. After extensive research in the early 2000’s, Brain Analyst, Dr. Mckee ran tests and finally came to the conclusion that the toxic proteins in the brains of ALS patients were coming from repeated blows to the head. It was then made evident why so many athletes in contact sports such as football, soccer, boxing, etc… were being diagnosed at such a young age and more frequently than
The brain consists of both neurons and glia cells. The neurons, which are cells housed in a cell body called a Soma, have branches which extend from them, referred to as dendrites. From these dendrites extend axons which send and receive impulses, ending at junction points called synapses. It is at these synapse points that the transfer of information takes place.