The term excitation conduction refers to the transmission of excitation in nerve or muscle cells. Excitation conduction is also often referred to as conduction of excitation, but from a medical point of view, this term is not entirely correct. What is excitation conduction? The term excitation conduction refers to the transmission of excitation in nerve … Excitation Conduction: Function, Tasks, Role & Diseases
Neurological latency is the time between a stimulus and the stimulus response. It is thus equal in duration to the nerve conduction velocity. In addition, latency in medicine can mean the time between contact with a noxious agent and the first symptoms. Neurological latency is prolonged in demyelination. What is the latency period? Neurological latency … Latency: Function, Tasks, Role & Diseases
Nerve conduction is the ability of nerve fibers to transmit bioelectrical impulses at a specific rate to both directions of conduction. Conduction occurs via action potentials in salvatory excitatory conduction. In diseases such as polyneuropathy, nerve conduction is impaired. What is nerve conduction? Nerve conductance is the ability of nerve fibers to transmit bioelectrical impulses … Nerve Conduction: Function, Tasks, Role & Diseases
A Ranvier lacing ring is a ring-shaped interruption of the fat or myelin sheath surrounding nerve fibers. In the course of “saltatoric excitation conduction” it serves to increase the speed of nerve conduction. Saltatoric, from Latin: saltare = to jump refers to the “jump” of an action potential that takes place when it encounters a … Ranvier lacing ring
Neuromyelitis optica is an inflammatory autoimmune disease that affects the central nervous system and leads to degradation of certain insulating nerve sheaths (medical term demyelination). As a result, inflammation of the optic nerve develops over a period of between a few months and two years. This occurs either unilaterally or bilaterally. In addition, the spinal … Neuromyelitis Optica: Causes, Symptoms & Treatment
Saltatory excitation conduction ensures sufficiently fast conduction velocity of neural pathways for vertebrates. Action potentials jump from one unisolated cord ring to the next on isolated axons. In demyelinating diseases, the insulating myelin is degraded, disrupting excitation conduction. What is saltatory excitation conduction? Saltatory excitation conduction ensures sufficiently fast conduction velocity of neural pathways for … Saltatory Excitation Conduction: Function, Role & Diseases
These drugs are used If exercise therapy is not sufficient to alleviate the symptoms, medication is used. For spasticity, muscle relaxants and anti-epileptic drugs are used. These are intended to relax the muscles. Baclofen or tizanidine is often used in tablet form. In severe cases, muscle relaxants can be given directly into the spinal cord … These drugs are used | Spasticity in multiple sclerosis
Demyelination refers to the loss or damage of myelin in the nervous system. Myelin plays an important role in the transmission of neuronal signals by electrically insulating nerve fibers (axons). For this reason, demyelination without treatment leads to multiple impairments in the long term; however, prognoses differ for different underlying causes. What is demyelination? Demyelination … Demyelination: Function, Tasks, Role & Diseases
Introduction Spasticity is an unintentional tensing of the muscles beyond the normal level. In addition to increased muscle tension, muscle twitches, muscle cramps and muscle rigidity also occur. Spasticity can occur repeatedly in phases or be continuous. They often occur in multiple sclerosis and are often combined with muscle weakness. The spasms can cause pain … Spasticity in multiple sclerosis
The following additional symptoms may occur Spasticity limits the mobility of the affected muscles. In some patients, spasticity occurs only after prolonged exertion. Many are restricted in their ability to walk. Spasticity is usually accompanied by muscle weakness. Furthermore, a painful feeling of tension or cramps in the muscles can occur. Over a longer period … The following additional symptoms may occur | Spasticity in multiple sclerosis
The Trömner reflex is a muscle reflex (increased finger flexor reflex) that can also occur in almost any healthy person. It is considered a sign of autonomic hyperexcitability and, in strong or unilateral expression, also a pyramidal tract sign. Unilateral absence indicates, for example, a radicular lesion (sensorimotor pain and deficits in the region of … Troemner Reflex: Function, Tasks, Role & Diseases
What is nerve inflammation of the arm? Arm nerve inflammation is an inflammatory change in one or more nerves in the arm (so-called mono- or polyneuritis). Depending on the severity and localization, this can lead to severe pain that can extend over the entire arm. The inflammation of nerves in the arm often occurs in … Nerve inflammation in the arm
