Motor neuron

ALS Amyotrophic Lateral Sclerosis is a progressive disorder that is inherited or acquired. It affects motor neurons. Motor neurons are cells that are in the brain, brain stem and spinal cord and their function is to carry an electrical signal to a muscle and trigger it to contract or relax. Medical terminology, a means without, my is muscle and trophic is nourishment. Lateral is pertaining to the side/direction that is affected and sclerosis is an abnormal condition of hardening. It was…

DYSARTHRIA WHAT IS DYSARTHRIA? Speech production is a complex process involving the co-ordinated contraction of a large number of muscles controlled by the nerve impulses originating in the motor areas of cerebral cortex. The organs that are involved in speech production are the lips, the tongue, the vocal folds and the diaphragm. When these organs don’t function efficiently, the speech tends to be unclear. One such condition which results owing to the malfunctioning of the speech organs is…

such as digestion, and reflexes. Generally speaking, a nerve from the spinal cord, spinal nerve, will grow from the spine to a muscle, it splits to form motor neurons, then contacts the muscle fiber at a point called the neuromuscular junction. This formation, in conjunction with all the nerve fibers one cell stimulates, is known as a motor neuron. They maintain tone through creating random, irregular contractions until a signal from the spine, in most cases, or the brainstem to maintain…

Stimulus, neurons, dendrites, neurotransmitters, axon, myelin, action potential, graded potential, transmembrane potential, neuroglia, cerebrum, spinal cord What is the central nervous system? It’s a system which consists of the nerves in the brain and spinal cord. This system only makes up about 3% of a human’s body weight but serves a vital function, gathering information about and reacting to its environment and any stimulus. Don’t Shoot the Messenger Much of the CNS is made up of neurons,…

As they were previously mentioned, they are called neurons. Neurons are cells that receive and impart messages for the body to react (“Brain Basics”). They connect to each other and all parts of the the body. When humans are hungry, have bathroom needs, feel too hot or too cold, nauseous, or are experiencing…

Important components of the neuromuscular junction where muscle innervation occurs include muscle and nerve fibres and motor end plates (Dhoot et al., 2013) whereas a neuron itself consists of a cell body or soma, axon, basal and apical dendrites (Megias et al., 2001). Neurons can be classified as excitatory or inhibitory based on their structure where excitatory neurons are typically pyramidal cells with one apical dendrite and multiple basal dendrites (Megias et al., 2001). The significant…

filled with undiscovered mysterious. The brain is composed of several different parts, each with its own job to carry out through the use of nerve cells. These nerve cells, or neurons, are abundant in the brain, creating over a thousand trillion connections among the hundred billion cells found within the brain. The neurons receive, process and transmit information from all parts of the body, controlling various aspects of the…

for an individual to communicate with others. Damage to certain parts of the brain function can lead to some drastic consequences relating to speech and language functions. I had always found neurons to be interesting even when I was learning about it in high school, but after a whole section of just neurons and their physiology, I just fell in love with it. I knew that neuron's overall function is to transmit information throughout the body,…

How one acts, thinks, or feels all come from the body’s nervous system. The nervous system is the body’s communication center that transmits thoughts and actions from the brain and spinal cord to a body part(s).The nervous system is made up of two parts- the peripheral nervous system and the central nervous system. The peripheral nervous system is a system outside the brain and spinal cord and it connects the central nervous system to the rest of the body. The central nervous system controls…

firing of neurons via the action potential; Fig.1b###) that can travel long distances in the body, enabling functions such as heartbeat, sensation, muscle contraction, hormonal activity, fluid secretion, immune response and, of course, brain activity. Ion channel drugs are used to treat major cardiovascular, neurological, muscular, metabolic, and respiratory conditions. In particular, sodium channel drugs have the remarkable ability to target specific cells to control sensory or motor…