nervous system Flashcards
what does cerebrospinal do
protects and absorbs, supplies nutrients, and removes waste
what are neurologia cells of the cns and 4 types
goal cells that protect neurons and make up half up of the nervous system )ependymal, astrocytes, oligodendrocytes, microglia)
what cells help form the myelin sheath that surround axons
oligodenfrocytes
what cells remove cellular debris and pathogens
microglia
what are the 2 types of neuroglia of the pns
satellite cells and schwann cells
what cells form enclosed segments of axons
schwann cells
describe the stimulus
an electrical signal to which an organism response
describe dendrites
The first part of the neuron to receive the stimulus or electrical signal
describe the cell body
The spherical spot of the neuron which contains the nucleus and organelles
describe the axon
it carries the message away from the cell body towards the terminal end fibers
myelin sheath
The fatty tissue is surrounds an insulator the axon. It speeds up the transmission of the impulse
terminal and fibers or axon terminals
they found the end of an axon and contain the vesicles
Neuro transmitters
Chemical substances released by neurons to affect the membrane potential of another
synapse
The space between each neuron
five types of neurotransmitters
dopamine, serotonin, norepinephrine, acetylcholine, and morphine