nervous system Flashcards
(39 cards)
Many dendrites one axon
Multipolar
One dendrites one axon
Bipolar
Appears to have a single axon
pseudo-unipolar
Highly branched
astrocytes
Epithelial-like
ependymal cells
small, mobile cells
microglia
cell with process that can surround several axons
oligodendrocytes
single cell surrounding axons
Schwann cells
is an involuntary reaction in response to a stimulus applied to be periphery and transmitted to CNS
Reflex
Is the neuronal pathway by which a reflex occurs.
reflex arc
Basic functional unit of nervous system because it is the smallest simplest pathway capable of receiving a stimulus and yielding a response
Reflex arc
5 components of reflex arc
- sensory receptors
- sensory neurons
- interneurons
4.motor neuron - effector organ
2 simplest pathway of neurons
converging pathway
diverging pathway
Two or more Neurons synapse with the same postsynaptic neuron
converging pathway
the axon from One neuron divides and synapses with more than one postsynaptic neuron.
diverging pathway
connects the spinal cord to the remainder of the brain
brainstem
is the most inferior portion of the brainstem and it is continuous with the spinal cord
medulla oblongata
_____ called little brain and attached to brainstem by several large connection called_____
cerebrum
cerebellar peduncles
part of the brain between the brainstem and the cerebrum.
diencephalon
largest part of the brain
cerebrum
what are the three stages of memory
working
short term
long term
the brain briefly stores information required for the immediate performance of a task
working memory
Last longer than working memory and can be retained for a few minutes to a few days
Short term memory
Stored in few minutes and can be permanent
long term memory