What is the structural and functional unit of the Nervous System?

the Neuron

Three parts of a neuron?

Cell Body, Dendrites, Axon

Cell Body function?

Contains nucleus, most cytoplasm, and other typical eukaryotic organelles

Dendrites function?

Primary sites for receiving signals from other neurons

Axon function?

Often covered in myelin Transmits impulses of depolarization along its length

Axon Terminal function?

Bulb-like extensions at the end of axons Responsible for releasing neurotransmitters to neighboring neurons and muscles

Schwann cells function?

Myelin sheath is formed by Schwann cells Acts as an insulator by preventing the loss of charged ions from the neuron Areas between sections of myelin are known as Nodes of Ranvier

Dendrites receives stimulation from the .....

outside environment

Three types of neurons?

Sensory, Motor, Interneurons

What are Sensory Neurons?

Takes information from a sensory receptor to the central nervous system

What are Motor Neurons?

Takes information from the central nervous system to an effector; muscle or gland

What are interneurons?

A nerve cell which communicates only with other neurons Provides connections between sensory and motor neurons