Motor neuron

There are too many organs in the body, each of which is different and plays different roles. Many people do not know what motor neurons are and what role they play in the human body. This article targets the issues that everyone is concerned about. In the following content, I will explain to you what motor neurons are and what the role of motor neurons is.

Motor neurons, also known as outward-conducting neurons, are responsible for transmitting information from the spinal cord and brain to muscles and endocrine glands, and controlling the activity of effector organs.

Motor neuron disease always threatens the health of patients, especially families with a genetic history of the disease. Their children and grandchildren are more likely to suffer from the disease. Therefore, these families should understand the symptoms of motor neuron disease in detail, pay attention to self-examination in daily life, and go to the hospital in time if they feel unwell to avoid worsening of the disease.

Symptoms of different types of motor neurone disease

The severity of motor neuron disease is mainly determined by the extent of damage to the nervous system. It is mainly divided into four types, and each type has some small subtypes. Due to the different degrees of damage, the symptoms of motor neuron disease are also different. This article will explain in detail the specific symptoms of these different types of sports-related diseases, and I hope it will be helpful to you.

1. Progressive muscular atrophy: It often occurs after the age of 40. Symptoms of medullary damage appear in the early stage of the disease. Patients may have tongue muscle atrophy and fibrillation, difficulty swallowing, coughing when drinking water, and slurred speech. In the later stage, due to damage to the pons and cortical brainstem bundles, symptoms of pseudobulbar palsy may occur. If the corticospinal tract is invaded, there will be hyperreflexia of the limb tendon reflexes and positive pathological reflexes.

2. Progressive bulbar palsy: The lesion is limited to the anterior horn cells of the spinal cord and does not affect the upper motor neurons. This type can be divided into:

(1) Juvenile type (proximal type): Most cases develop during adolescence or childhood, have a family history, and are inherited in an autosomal recessive or dominant manner. Clinically, the symptoms are weakness and atrophy of the pelvic girdle and proximal muscles of the lower limbs, unsteady gait when walking, abdominal lordosis when standing, and weakness and atrophy of the shoulder girdle and proximal muscles of the upper limbs, anterior horn irritation (fasciculations), and difficulty getting up from a supine position.

(2) Infantile type: It is an autosomal recessive genetic disease that occurs in the mother's womb or within one year after birth. The clinical manifestations are muscle weakness and atrophy of the limbs and trunk. Therefore, the fetus in the mother's womb will experience a significant decrease or disappearance of fetal movements.

(3) Adult type (distal type): It mostly occurs in middle-aged men, starting from the distal end of the upper limbs and developing from the hands to the proximal end. There are obvious muscle atrophy and weakness, decreased tendon reflexes, muscle fasciculations, and can develop to the lower limbs or neck muscles, causing respiratory paralysis. In rare cases, it can develop from the distal to the proximal end.

I believe that after reading the above article, everyone has a general understanding of what motor neurons are. Whether motor neurons are healthy will be related to the health of the human body and affect everyone's physical condition. We hope that after understanding the dangers of motor neuron disease, everyone can go to the hospital for treatment as soon as possible to avoid the deterioration of the disease and cause serious harm to themselves.