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Motor and sensory nerves flash card

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    Because the ANS is a visceral motor system, afferent pathways are of no importance and actually are rarely found
    The rami communicantes are associated only with the sympathetic divison of the ANS
    The gray rami communicantes consists of myelinated postganglionic fibers
    Splanchnic nerves are mixed motor and sensory nerves
    The autonomic nervous system may cause activation or inhibition, depending on the division that is active and the target that is affected
    The celiac ganglion is primarily associated with the sympathetic division
    All visceral organ receive dural innnervation from both the sympathetic and parasympathetic divisions of the ANS
    Thermoregulatory responses to increased heat are mediated by the sympathetic nervous divison
    Most disorders of the autonomic nervous system reflect abnormalities of smooth muscle control
    Alpha-adrenergic effects dominate the direct control of blood pressure
    The adrenal medulla is considered a “misplaced” sympathetic ganglion by some
    Acetylcholine is the substance released by the axonal endings of the somatice efferent fibers and by the parasympathetic nerve ending fibers
    The sympathetic and parasympthathetic divisions of the ANS have the same effect on most body organ systems
    Through direct neural stimulation, the sympathetic division promotes many metabolic effects via hormone release
    Cranial nerves VII, IX, and X contain postaganlionic fibers of the parasympathetic nervous system
    The ANS stimulates smooth muscles, skeletal muscles and glands, whereas the somatic nervous system innervates skeletal muscle only
    Norepinephrine-releasing fibers are called cholinergic fibers
    Autonomic ganglia are motor ganglia only
    The craniosacral division is another name for the parasympathetic division alone.
    Most blood vessels are innervated by the sympathetic division alone
    The blood vessels of the skin are one of the few areas of the body whre the vessels are innervated by both the sympathetic and parasympathetic division.
    Events recorded in a lie detector examination are controlled by the sympathetic division
    All splanchnic nerves are sympathetic
    The structures that specifically exhibit vasomotor tone are mostly under sympathetic control
    Most splanchnic nerves pass through the abdominal aortic plexus
    Because many of the same cardiac cells are innervated by both parasympathetic and sympathetic fibers, the influence of the two divisions on the heart is synergistic
    Adrenergic receptors are the only receptors found on the heart
    Autonomic reflex centers occur in the spinal cord, medulla, and midbrain.
    Cranial nerves III, VII, and IX supply the entire parasympathetic innervation of the head; however, only the preganglionic fibers lie within these three pairs of cranial nerves
    Because the parasympathetic fibers never run in spinal nerves, rami communicantes are associated only with the sympathetic division
    Rami communicantes are designated white or grey to indicate wheather or not the fibers passing through them are myelinated
    The autonomic and somatic nervous systems are two separate systems that work totally independent of each other
    Albuteral is used by asthma patients to dialate thhe bronchioles of the lungs and ease breathing
    The secretions of the adrenal medulla act to supplement the effects of
    sympathetic stimulation
    Which of the following does not describe the ANS
    a system of motor neurons that innervates all muscle cells
    Preparing the body for the “fight or flight” response is the role of the
    sympathetic nervous system
    The somatic and autonomic nervous systems differ in all of the following except
    all of the neurotransmitters
    Where would you not find a cholinergeric nicotinic receptor?
    all parasympathetic target organs
    The parasympathetic ganglion that serves the eye is the
    ciliary ganglion
    Cardiovascular effects of the sympathetic divison include all except
    dialiation of the blood vessels serving the skin and digestive viscera
    Over 90% of all parasympathetic fibers are derived from the cranial nerve number
    The “resting and digesting” division of the autonomic nervous system is the
    parasympathetic division
    Control of temperature , endocrine activity, and thirst are functions associated with the
    Which of these effectors is not directly controlled by the autonomic nervous system?
    increased peristalsis of the digestive viscera
    Which of the following statements is not true?
    Sympathetic origin is craniosacral, parasympathetic is thoracolumbar.
    Sympathetic responses generally are widespread because
    NE and epinephrine are secreted into the blood as part of the sympathetic response
    Sympathetic nerves may leave the spinal cord at which vertebra?
    first thoracic
    Autonomic ganglia contain
    the cell bodies of motor neurons
    The parasympathetic fibers of the __________nerves innervates smooth muscles of the eye that cause the lenses to bulge to accomodate close vision
    Fibers that enter and leave the sympathetic chain without synapsing form structures called
    splanchnic nerves
    Which of the following is not a plexus of the vagus nerve?
    Visceral reflex arcs differ from somatic in that
    visceral arcs involve two motor neurons
    The parasympathetic tone
    determines normal activity of the urinary tract
    Once a sympathetic preganglionic axon reaches a trunk ganglion, it can do all but which one of the following?
    synapse with a parasympathetic neuron in the same trunk ganglion
    Which of the following appears to exert the most direct influence over the autonomic function?
    reticular formation
    Beta- blockers
    decrease heart rate and blood pressure
    Erection of the penis or clitoris
    is primarily under parasympathetic control
    Which is a uniquely sympathetic function?
    regulation of body temperature
    Raymond’s disease
    is characterized by exaggerated vasoconstriction in the extremities
    Autonomic dysreflexia
    involves uncontrolled activatio of autonomic neurons
    Which sympathetic fibers from a splanchhnic nerve?
    those that pass through the trunk ganglion to synapse in collateral or prevertebral ganglia
    Which of the following adrenergic neurotransmitter receptors plays the major role in heart activity
    beta 1
    Where would you not find an autonomic ganglion?
    in the armpit
    Sympathetic division stimulation causes
    increased blood glucose, decreased GI peristalsis, and increased heart rate and blood pressure
    The smooth muscle of the digestive viscera is served largely by the
    tenth cranial nerve
    The route of major parasympathetic outflow from the head is via the
    vagus nerve
    Parasympathetic functions include
    lens accomodation for close vision
    Emotions influence autonomic reactions primarily through integration in the
    Alpha and beta receptors are classes of
    adrenergic receptors
    Sweat glands are innervated by the
    sympathetic fibers alone
    A division alone that adaptss the lens of the eye for close vision
    parasympathetic divison
    The two cholinergic receptor types are nicotonic and
    A receptor type is used by the heart, and when activated increases heart rated
    The only sympathetic preganglionic neuron to go directly to an organ is one branch of the
    greater splanchnic nerve
    The parasympathetic division uses only_____________ as a neurotransmitter in the ganglionic neurons

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