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Exam 3
Anatomy
23
Anatomy
Undergraduate 3
11/03/2015

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Term
What are the divisions of the nervous system?
Definition
Central and Peripheral nervous systems
Term
What are the divisions of the PNS?
Definition
Sensory and motor
Term
What is the function of the sensory division of the PNS?
Definition
Transmits information from the sensory receptors to the CNS
Term
What is the function of the motor division of the PNS?
Definition
Transmits information from the CNS to muscles and glands (effector organs)
Term
What are the divisions of the sensory part of the PNS?
Definition
Visceral and somatic sensory
Term
What is the function of the somatic sensory?
Definition
Carries information from muscles, skin, bones, and joints
Term
What is the function of the visceral sensory division?
Definition
Carries information from the viscera of the thoracic and abdominopelvic cavity
Term
What are the divisions of the motor division of the PNS?
Definition
Visceral motor (autonomic) and somatic motor (involuntary)
Term
What are the two visceral motor divisions? What are their functions?
Definition
Sympathetic:stimulates body and prepares for action such as fight or flight
Parasympathetic: prepares you for rest
Term
What is the function of the somatic motor division?
Definition
transmits information to the skeletal muscles
Term
What is the function of the visceral motor division?
Definition
transmits info to cardiac muscle, smooth muscle, and glands
Term
What are the two types of cells in nervous tissue?
Definition
glial cells (neuroglia-90%) and ganglion
Term
What are the three classification of neurons?
Definition
Sensory, interneurons, and motor neurons.
Term
Sensory neurons... (function)
Definition
transmit sensory information to the CNS
Term
Motor neurons... (function)
Definition
transmits info to glands and muscles
Term
interneurons... (function)
Definition
transmit information between different parts of the CNS
Term
What are the six types of neuroglia?
Definition
Located in the CNS:
oligodendrocytes
ependymal cells
microglia
astrocytes (most abundant glial cells)

Located in the PNS:
schwann
satellite cells
Term
What are the function of oligodendrocyte neuroglia cells?
Definition
they form the myelin sheath (speeds up action potential transmission along the axon) around some neurons
Term
What are the function of ependymal neuroglia cells?
Definition
line the cavities within the CNS and produce and circulate cerebral spinal fluid
Term
What are the function of microglia neuroglia cells?
Definition
Immune functions: remove debris, damages cells, microorganisms, and other foreign material.
Term
What are the functions of astrocyte neuroglia cells?
Definition
form supportive network

create blood brain barrier

regulates blood flow

regulates composition of cerebral spinal fluid

take up glucose from blood and convert it to lactate

produce chemicals that stimulate neuron grown and form synapses

regulate signaling between neurons

create scar tissue
Term
What are the function of schwann neuroglia cells?
Definition
create the myelin sheath alone some axons
Term
What are the functions of satellite neuroglia cells?
Definition
surround ganglia and create electrical insulation for the neurons

regulate fluid composition within the ganglia
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