Neurons Flashcards
Where are motor neurons found?
In the CNS, in the brain and spinal cord
What do motor neurons do?
Control muscle movement in the PNS through neurotransmitters
What are the two types of motor neurons?
- Lower motor neuron
- Upper motor neuron
What is the lower motor neuron?
Spinal cord to the muscles
What is the upper motor neuron?
The brain and spinal cord
Where are relay neurons found?
In the CNS, in the brain and spinal cord
What do relay neurons do?
Pass signals which allow sensory and motor neurons to communicate
Why don’t relay neurons need a myelin sheath?
The signals don’t need to travel far
Where are sensory neurons found?
In the PNS
What do sensory neurons do?
Transmit messages from the PNS to the CNS
What does it mean when an axon has two extensions with a cell body in the middle?
Pseudounipolar, most sensory neurons are this
What the two extensions of a sensory neuron?
- Receptor Cells
- Spinal Cord
What do receptor cells do?
Gather sensory input
What does the spinal cord do?
Transmits information into the spinal cord
