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32 terms

A&P Quiz

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nerve fibers that release norepinephrine
Adrenergic fibers
any of a number of proliferative and degenerative changes in the arteries leading to their decreased elasticity
Arteriosclerosis
self-directed; self-regulating; independent
Autonomic
efferent division of the peripheral nervous system that innervates cardiac and smooth muscles and glands; also called the involuntary or visceral motor system
Autonomic Nervous System
nerve endings, that, upon stimulus, release acetylcholine
Cholinergic fibers
the 12 nerve pairs that arise from the brain
Cranial nerves
graphic record of the electrical activity of nerve cells in the brain
Electroencephalogram
bundle of nerve or muscle fibers bound together by connective tissue
Fascicle
collection of nerve cell bodies outside the CNS
Ganglion
nerves containing the processes of motor and sensory neurons; their impulses travel to and from the CNS
Mixed nerves.
paralysis of the lower limbs
Paraplegia.
a division of the autonomic nervous system; also referred to as the craniosacral division
Parasypathetic division.
portion of the nervous system consisting of nerves and ganglia that lie outside of the brain and spinal cord
Peripheral nervous system.
a network of converging and diverging nerve fibers, blood vessels, or lymphatics
Plexus.
automatic motor neuron that has its cell body in the CNS and projects its axon to a peripheral ganglion
Preganglionic neuron
automatic motor neuron that has its cell body in a peripheral ganglion and projects its axon to an effector
Postganglionic neuron
paralysis of all four extremities
Quadriplegia
branch of a nerve, artery, vein, or bone
Ramus
the 31 nerve pairs that arise from the spinal cord
Spinal nerves
a division of the ANS; called the "fight-or-flight" division
Sympathetic division
Vagus Nerve
Besides the accessory nerve, which pair of cranial neves extends beyond the head and neck?
Dorsalroot ganglion
The cell bodies of sensory neurons whose fibers enter the cord by the dorsal root are found in the
CNS; in ganglia in the PNS
The motor portions of the ANS, sympathetic and parasympathetic, are characterized by a two-neuron chain. The preganglionic nerve cell is found in the ________ and the postganglionic nerve cell body is found _________.
VII Facial, IX Glossopharyngeal, and XII Hypoglossal
Damage to which cranial nerve(s) may impair the sense of taste?
Mixed
What is the term for a nerve that contains both afferent and efferent neurons
VIII
Which cranial nerve innervates the inner ear
Emegency Situations and Fight or flight situations
Which of the following is controlled by sympathetic innervation?
Inside, white matter on the outside, and a dorsal motor root
The spinal cord has gray matter on the
Organs and by short postganglionic fibers
The parasympathetic nervous system is characterized by peripheral ganglia near the
Dilation of the pupils
Which of the following is not a result of parasympathetic stimulation
Common fibular and tibial nerves
The sciatic nere is the largest nerve in the body, resulting from a combination of which two nerves
Despie some neuronal loss, an unlimited number of neural pathways are available and ready to be developed, therefore, additional learning can occu throughout life.
Which one of the following statements about aging is the most accurate