Flashcards in Week Six: Nerves Of Steel Deck (58)
What are the functions of the nervous system?
•Coordinates and controls body activity
•Detects and processes internal and external information and formulates appropriate
What is the basic unit of the nervous system?
What are the three types of neurons?
What are the parts of the neuron?
Cell body, dendrites, axon
What is the function of dendrites?
Carry impulses toward the cell body
What is the combining form for dendrites
What are the functions of axon
Carry impulses away from the cell
Combining form for axon
What is a synapse
Space between two neurons or between a neuron and a receptor
What is the combining form for a synapse
Synaps/o and synapt/o
What are neurotransmitters
Chemical substances that are released into the space to allow information to be relayed
What are neuroglia or glial cells
Supportive cells of the nervous system
What is the combining form glial cells
What are the glial cells: (examples of them)
What is the myelin
Protective covering over some nerve cells including parts of the spinal cord
Serves as an electrical insulator
What are the nodes of ranvier
What gives white matter it's color
Myelin gives nerve fibers a white color
What gives gray matter it's color
Does not contain myelinated fibers
What is a nerve?
One or more bundles of impulse carrying fibers that connect CNS to other parts of the body
Combining forms for nerve or nerve tissue
What is the central nervous system is made up of
the brain and spinal cord
Combining form for brain
Combining form for spinal cord
Combining form for bone marrow
What are the meninges and what are the layers
A three layered membrane that surrounds the CNS
Dura mater, arachnoid membrane, pia mater
What is the CSF
Clear, colorless ultrafiltrate that nourishes, cools, and cushions the CNS
What is the CSF made by?
Choroid plexus that lines the ventricles of the brain
What is the brain
Enlarged and highly developed portion of the CNS that lies in the skull and is the main site of nervous control
What is the cranium
Portion of the skull that encases the brain