What is a neuron?
A neuron is a type of large cell that has extensions called dendrites and axons. (3)
A neuron is a type of brain cell in a human. (5)
A neuron is also known as a nerve cell. (2)
A neuron is also known as a neuron cell. (3)
Every neuron has one axon that connects it with other neurons or with muscle cells or gland cells. (4)
What contains neurons?
the brain of a human
What do neurons do?
A neuron can generate electrical signals called action potentials, which help them carry messages across vast distances within milliseconds. (3) This is called synaptic transmission. (3)
Neurons innervate every other organ system of the human body (3)
A neuron is responsible for receiving sensory input, sending motor commands to muscles, and transforming and relaying the electrical signals throughout these processes. (4)
Neurons allow a person to think, feel, move, and comprehend the world around. (5)
When a neuron fires an action potential, electric and chemical signals spread from the axon of one neuron to the dendrites of another neuron across a small gap called the synapse. (5)
Where are neurons located?
the brain of a human
throughout the nervous system (3)
spinal cord (3)
What are types of neurons?
sensory neurons
motor neurons
interneurons
other – dopaminergic neurons
What are types of neurons – by shape?
anaxonic neurons
bipolar neurons
unipolar neurons
multipolar neurons
pseudounipolar neurons
What are parts of a neuron?
axon (5)
dendrite (4, 5)
cell body (soma) (5)
How many neurons does an average adult human brain have?
An average adult human brain contains approximately 100 billion neurons. (5) [?conflict]
The brain consists of about 85 billion neurons. (6) [?conflict]
Resources
1. https://www.drsamberne.com/mitochondria-red-light-and-retina-health/
2. https://www.healthline.com/health/neurons
3. https://www.bioexplorer.net/nerve-cell-types.html/
4. https://www.verywellhealth.com/what-is-an-axon-5190652
5. https://dana.org/article/cells-of-the-brain/
6. https://brainstuff.org/blog/oligodendrocyte-function
