Nervous Tissue Flashcards
Away from reference point
Efferent
How many pairs of spinal nerves
31
How many pairs of cranial nerves
12
4 Effector tissues
Glands
Smooth
Skeletal
Cardiac
Components of neuron
Cell body (perikaryon) Processes
What organelle modifies, transports and stores proteins
Rough endoplasmic reticulum
Fibrous intercellular network surrounding cells of CNS
Neutrophil
Peripheral nervous system is
Wiring and nerves transmits electrical currents
Sends info to and from CNS
Peripheral nervous system
Neuron responds to
Stimulus
Nissl bodies =
Rough endoplasmic reticulum
Signal to cell body
Dendrites
Neuroplasticity
Dendrites can change shape
What conducts action potential
Axon
Plasma membrane
Axolemma
Contents of axon
Axoplasma
Where axon originates
Axon hillock
Just past hillock where excitatory and inhibitory stimuli are added up
Initial segment
Where two axons come together
Synapses
2 directions of atonal transport
Retrograde and anterograde
Transport action potentials and molecules
Axonal transport
Afferent in PNS
Sensory
Efferent in PNS
Motor
From CNS out to 4 effector tissues
Motor
Interconnect neurons and creates circuits
Interneurons
Most important and numerous
Interneuron
Interneurons and motor neuron are what structure classification
Multipolar
Rare in adult except for special senses
Bipolar