A&P Final: Functional Classification of Neurons

What does functional classification of neurons depend on?

What direction an impulse travels in relation to the CNS.

What are the three functional neuron types?

1. Sensory

2. Motor

3. Interneurons

Sensory Neurons are also called:

Afferent neurons

Afferent means:

Towards the CNS

What do sensory neurons do:

Carry sensory information from the skin, muscles, joints, sensory organs, and viscera to the CNS.

Sensory neurons are usually structurally what:

Mainly unipolar, except special senses are often bipolar.

Motor Neurons are also called:

Efferent neurons.

Efferent means:

Away from the CNS.

What do motor neurons do

Carry impulses from the CNS to muscles or glands.

Motor neurons are structurally what:

Multipolar

Interneurons are also called:

Association neurons

Where are interneurons found?

CNS

What do interneurons do

Connect sensory and motor neurons, process sensory info and activate appropriate motor response.

Interneurons are usually structurally what

Multipolar