Autonomic nervous system
anatomy and physiology 430
Terms in this set (18)
autonomic motor neuron that has its cell body in the central nervous system and projects its axons to a peripheral ganglion, resides in the brain and spinal cord
autonomic motor neuron that hast its cell body in a peripheral ganglion and projects its (post ganglionic)axon to an effector
collection of sympathetic or parasympathetic ganglionic neuronal cell bodies.
the division of the autonomic nervous system that oversees digestion, elimination, and glandular function, the resting and digesting subdivision.
the division of the autonomic nervous system that prepares the body for activity or to cope with some stressor (danger, excitement etc) the fight , fright and flight subdivision
visceral sensory neurons
send information concerning chemical changes stretch and irritation of the viscera, are the first to link in autonomic reflexes.
visceral reflex arcs
they have receptors, sensory neurons , integration center, motor neuron, effector-except the visceral reflex arc has two neurons in its motor component.
pain felt at an area other than the area of origin
nerve ending that upon stimulation release acetylcholine
nerve fibers that release norepinephrine
acetylcholine landing receptors of all autonomic ganglionic neurons and skeletal muscle neuromuscular junctions; names for activation by nicotine
acetylcholine binding receptors of the autonomic nervous system target organs; named for activation buy the mushroom poison muscarine
the vascular system is entirely innervated by sympathetic fibers that keep the blood vessels in a continual state of partial constriction.
normal level of parasympathetic output sustains normal gastrointestinal and urinary tract activity; lowers heart rate
awareness of what is happening in the body, biofeedback techniques have been successful in helping individuals plagued by migraine headaches.
is intermittent attacks causing the skin of the fingers and toes to become pale, then cyanotic and painful provoked by exposure to cold or emotional stress.
involves uncontrolled activation fo autonomic neurons it occurs on individuals with a quadriplegia and other spinal cord injuries the usual trigger is a painful stimulus to the skin or overfilling of a visceral organ, such as the urinary bladder. the precise mechanism of autonomic dysreflexia is not yet clear.
cutting or severing the vagus nerve to decrease secretion of gastric juice in those with peptic ulcers that do not respond to medication.