What are the two main types of neurites in neurons?

What are the two main types of neurites in neurons?

• A. Axons and dendrites.
• B. Axons and synapses.
• C. Dendrites and soma.
• D. Myelin sheaths and nodes of Ranvier.

Answer: (A)

Neurons have two main neuritic projections: the axon and the dendrites. Neurites are the processes that extend from the cell body to communicate with other cells. Dendrites are the structures that primarily receive input from other neurons and convey it toward the cell body, often branching to sample many synapses. The axon, in contrast, transmits electrical signals away from the cell body to other neurons, muscle, or glands, and is typically a single long projection that can be insulated by myelin to speed conduction. Other terms mentioned aren’t neurites. Synapses are the contact points where neurons communicate, not a type of neurite. The soma is the cell body itself, not a neuritic projection. Myelin sheaths and nodes of Ranvier are features along axons that influence signal speed, not distinct neurite types.

Neurons have two main neuritic projections: the axon and the dendrites. Neurites are the processes that extend from the cell body to communicate with other cells. Dendrites are the structures that primarily receive input from other neurons and convey it toward the cell body, often branching to sample many synapses. The axon, in contrast, transmits electrical signals away from the cell body to other neurons, muscle, or glands, and is typically a single long projection that can be insulated by myelin to speed conduction.

Other terms mentioned aren’t neurites. Synapses are the contact points where neurons communicate, not a type of neurite. The soma is the cell body itself, not a neuritic projection. Myelin sheaths and nodes of Ranvier are features along axons that influence signal speed, not distinct neurite types.