psy neuron structure

A nerve cell receives signals on short branching extensions. Name those extensions.

Dendrites

Which part of a neuron contains its nucleus and supports its basic life functions?

Cell body (soma)

Which long part carries an electrical signal away from the soma?

Axon

What insulating material helps signals move efficiently along many axons?

Myelin sheath

Where does a neuron usually release neurotransmitters?

Axon terminals

What is the communication junction between a neuron and another cell called?

Synapse

What is the narrow space neurotransmitters cross at a chemical synapse?

Synaptic cleft

A neuron loses its myelin. What change is likely?

Signals may slow down or fail to travel normally

Put these parts in typical signal order: axon terminals, soma, dendrites, axon.

Dendrites → soma → axon → axon terminals

What is the difference between a synapse and a synaptic cleft?

A synapse is the whole communication junction; the cleft is its tiny gap

A signal reaches the end of the axon. What structure passes the message to the next cell?

Axon terminals

Which structure contains most of the neuron’s DNA?

Nucleus, usually inside the soma