Answer:
Neuron ( also called nerve cell) is considered as the fundamental unit of nervous system that is used to transmit nerve impulses throughout the body.
It is primarily composed of dendrites ( which receives signals from other neurons), cell body ( containing nucleus and the cell organelles) , axon ( that transmits electrical signals across a long distance and it protected by insulating myelin sheath), and axon terminal ( which release neurotransmitter, chemical messenger in the synapse).
Thus, correct answers for the question is-
1) receives signals from other neurons - Dendrites
2) contains the nucleus and the cell organelles- Cell body
3) protects and insulates the axon- Myelin sheath
4) conveys electrical signals across a long distance- Axon.
5) pasess electrical signals to another neuron- Axon terminal.