Structure Of Nervous Tissue Flashcards
What are neurons ?
Neurons are specialised cells that conduct information (electrical impulses)
What are the three types of neuron?
Sensory neurons, motor neurons, interneurons.
What is the function of a sensory neuron ?
They are responsible for transmitting impulses from sensory organs to the central nervous system.
What is the function of a motor neuron ?
They send impulse from the central nervous system to specific muscles or organs.
Whatever is the function of a interneuron ?
They transmit impulses between sensory and motor neurons within the brain or spinal chord.
Why do interneuronas not have a myelin sheath ?
They do not have a myelin sheath because it can cause te to be more sensitive to any changes to there surrounding.
What is a synapse ?
It is a junction between nerve cells, transmitting signals across the gap between nerve cells by diffusion.
What are glial cells ?
Glial cells are cells that provide protection and support to nervous tissue.
What is a myelin sheath ?
It acts as an electrical insulator which helps speed up conduction of action potentials and protects the neuron from damage
