Nervous System Psych

Quiz Study

Sensory (afferent) neurons

Carry signals to the brain and spinal cord.

Motor (efferent) neurons

Carry signals from the brain/spinal cord to muscles and glands.

Cell body

Contains the nucleus and keeps the neuron functioning.

Dendrites

Receive signals from other neurons or receptors.

Axon

Carries nerve signals away from the cell body.

Synapse

Tiny gap where neurons communicate using chemicals.

All-or-nothing law

A neuron either fires fully or doesn’t fire at all.

Myelin sheath

Fatty covering that speeds up nerve signals.

Acetylcholine

Neurotransmitter involved in muscle movement, memory, and attention.

Dopamine

Neurotransmitter linked to reward, motivation, movement, and learning.