Neurons and Neuroglia
support, insulate and protect the neurons
compose half of all nervous tissue.
Star shaped; Cling to neurons and bring them blood supply
spider-like phagocytes that dispose of cellular debris and bacteria
line the CNS cavities. Contain cilia that move CSF around.
produce the fatty coverings around neurons called myelin sheaths, that insulate the neurons.
form myelin sheaths around neurons. Ex) oligodendrocytes
protect, nourish and cushion neurons Ex) astrocytes, microglia and ependymal cells
The cells of the nervous system; They transmit impulses from one part of the body to another.
metabolic center of the cell; contains the nucleus and organelles.
an extension of the cell body that carries impulses away from the cell body.
the end of an axon; where it meets a dendrite, muscle or gland
an extension of the cell body that carries impulses towards the cell body.
the fatty insulation that surrounds and protects an axon.
the gap between the axon termial and the muscle, gland, organ or neuron that it meets.
neurons that reside within the spinal cord and connect sensory and motor neurons to each other.
Support insulate and protect cells
Demonstrate irritability and conductivity, and thus transmit electrical messages from one are of the body to another area
Able to divide; therefore are responsible for most brain neoplasms