spinal cord
Q. Where is the nucleus in a nerve cell?
soma
Table of Contents
- Q. Where is the nucleus in a nerve cell?
- Q. Which of the following part of neuron possess its nucleus?
- Q. Where is the motor neuron located?
- Q. What type of cell is a motor neuron?
- Q. What are LMN signs?
- Q. How does the lower motor neuron be activated?
- Q. How long does motor neurone disease take to develop?
- Q. Can motor neurone disease be cured?
- Q. Does a brain scan show motor neurone disease?
Q. Which of the following part of neuron possess its nucleus?
The part of the cell body which contains the nucleus is cyton.
Q. Where is the motor neuron located?
central nervous system
Q. What type of cell is a motor neuron?
Motor neurons are a specialized type of brain cell called neurons located within the spinal cord and the brain. They come in two main subtypes, namely the upper motor neurons and the lower motor neurons. The upper motor neurons originate in the brain and travel downward to connect with the lower motor neurons.
Q. What are LMN signs?
Signs of LMN damage include weakness, muscle atrophy (wasting), and fasciculations (muscle twitching). These signs can occur in any muscle group, including the arms, legs, torso, and bulbar region. In classical ALS, a person experiences both UMN and LMN signs in the same region, for example in an arm.
Q. How does the lower motor neuron be activated?
Glutamate released from the upper motor neurons triggers depolarization in the lower motor neurons in the anterior grey column, which in turn causes an action potential to propagate the length of the axon to the neuromuscular junction where acetylcholine is released to carry the signal across the synaptic cleft to the …
Q. How long does motor neurone disease take to develop?
The onset of symptoms varies but most commonly the disease is first recognized between 20 and 40 years of age. Generally, the disease progresses very slowly. Early symptoms may include tremor of outstretched hands, muscle cramps during physical activity, and muscle twitches.
Q. Can motor neurone disease be cured?
There’s no cure for motor neurone disease, but treatment can help reduce the impact the symptoms have on your life.
Q. Does a brain scan show motor neurone disease?
The MRI scan cannot diagnose motor neurone disease but can look for evidence of other causes of a patient’s symptoms such as damage to the spinal cord in the neck (upper motor neurone) and the nerves that leave the neck to supply the muscles (lower motor neurone) caused by ‘wear and tear’ changes.
