neurons genially

Neurons

Characteristics of a Neuron

• extreme longetivity
• conduct messages
• amitotic
• high metabolic rate

Structure of a Neuron

• made of cell body (soma) and processes (dendrites and axons)
• soma
• cell body that does things any other cell would do
• dendrites
• branch out from soma
• receive info
• axons
• send info
• parts may have a myelinated sheath
• insulated barrier that helps increase the speed of impulses

Functional Classification

• sensory
• pick up stimuli and send impulses to the CNS
• motor
• send impulses from the CNS to efferents after processing of stimuli
• association/interneurons
• connect sensory and motor neurons

Structural Classification

• multipolar
• have many extensions from the cell body
• most common type of motor and association neurons
• bipolar
• have one axon and one dendrite
• mostly sensory neurons
• unipolar neurons
• one single process

multi bi uni