A&P - Neuron Cell Vocab

Nervous Functions

sensory input, integration, motor output

What makes up the CNS?

Brain and spinal cord

What makes up the PNS?

nerves

what are the two PNS divisions

sensory (afferent) and motor (efferent)

what does the sensory (afferent) division of the PNS do?

carry impulses from PNS TO the CNS

what does the motor (efferent) division of the PNS do?

carry impulses FROM CNS to PNS

what are the two parts of the motor (efferent) division

somatic and automatic

what is the function of Neurologia

the supporting cells. teacher and nanny

What are astrocytes?

in CNS, they connect neurons and capillaries and maintain homeostasis

what are microglia?

phagocytes that monitor neuron health in CNS

what are ependymal cells?

line the brain and spinal cavities

what are oligodendrocytes?

wrap several CNS nerve fibers

what are schwann cells?

wraps one PNS nerve fibers

what are satellite cells?

surround neuron cell bodies with ganglia in PNS

what are axons and dendrites?

axons send signals and dendrites receive signals

what are dendrites?

branched processes that receive input as graded potentials

what are axons?

long process that transmit action potentials

what are myelin sheaths?

formed by Schwann cells or oligodendrocytes around axons that increase impulse speed and protects

what are the differences between multipolar, bipolar, and unipolar?

multipolar has 3 or more processes, bipolar has 2, and unipolar has 1.