Chapter 19: ANS

• this substance binds to or blocks a receptor thereby preventing the normal expected effect. What is this term

  antagonist
• the overstimulation of the vagus nerve may cause

  slowing or stopping of the heart rate
• the heart is served by which sympathetic ganglion

  the superior cervical ganglion

  middle cervical ganglion

  inferior cervical ganglion
• the axons of sympathetic preganglionic neurons that enter the sympathetic trunk ganglia cannot

  pass into the trunk and then back through a white communicating ramus to return to the spinal cord
• the axons of the sympathetic preganglionic neurons that enter the sympathetic trunk ganglia can

  synapse in the first ganglion at the level of entry

  pass through without terminating in the sympathetic trunk and exit the trunk to form splanchnic nerves

  without synapsing, pass through the sympathetic trunk ganglion and extend to the suprarenal medulla
• what neurotransmitter is released from most sympathetic postganglionic neurons near the effector cells

  norepinephrine
• which cranial nerve does not transport parasympathetic fibers

  V
• which part of the autonomic division normally has longer preganglionic and shorter post-ganglionic nerve fibers

  parasympathetic
• what is true about the sympathetic division of the ANS

  most preganglionic axons are relatively short
• T or F: in the sympathetic division of the ANS it posses axons of cranial nerve X

  F
• T or F : The sympathetic division of the ANS is a single sympathetic preganglionic fiber that may synapse with one of more postganglionic neurons

  F
• T or F : in the sympathetic division of the ANS preganglionic neurons extend form the brainstem or sacral elements of the spinal cord

  F
• what is not a sympathetic response

  increased mobility in stomach and intestines
• what is a sympathetic response

  pupils of the eyes dilate

  heart rate, force heart contraction, and blood pressure increase

  airways dilate, allowing faster movement of air into and out of the lungs

  decreased secretion from salivary glands
• the neurotransmitter that is released from preganglionic neurons of the sympathetic and parasympathetic parts of the autonomic divisions

  acteylcholine
• what neurotransmitter is used at all ganglionic synapses in the ANS

  acteylcholine
• the enteric division of the ANS is found in the ____ of the body

  gastrointestinal tract
• the beta receptors are found in which division

  sympathetic
• the nicotinic and muscarinic receptors are found in which divisions

  both parasympathetic and sympathetic
• the white and gray rami communicate are found in which division

  sympathetic
• which substances bind to adrenergic receptors

  epinephrine and norepinephrine
• which is a feature that is exclusive to the SNS

  most preganglionic axons are short
• T or F: the sensory in put to the ANS is usually not consciously perceived

  T
• T or F: most autonomic responses cannot be consciously altered or suppressed to any great degree

  T
• T or F: most autonomic motor pathways consists of two motor neruons in series

  T
• T or F: the result of autonomic motor neuron stimulation is always excitatory effectors

  F
• the sympathetic division of the ANS is often referred to as the

  fight or flight
• the sympathetic chain of ganglia are found in

  a ventricle row next to the vertebral column
• which would not be under the ANS control

  skeletal ms
• which would be under the ANS control

  smooth ms

  cardiac ms

  glands
• all are innervated by both the sympathetic nervous sysetn and the parasympathetic nervous system except

  sweat glands
• which are innervated by both the SNS and PNS

  eye, heart, and liver
• what would be an effector of the SNS

  skeletal ms
• what would not be an effector of the SNS

  smooth ms

  cardiac ms

  glands
• T or F: varicosities release neurotransmitters over a large area

  T
• T or F: varicosities are all swelling of the terminal branches of the autonomic fibers

  T
• T or F: varicosities allow entire organs to be influenced by autonomic activity

  T
• parasympathetic preganglionic axons are relatively ____. however, sympathetic preganglionic axons are relatively ____

  long, short
• what is the correct order of components for passage of nerve implies over and autonomic reflex arc

  receptor, sensory neuron, integrating center, preganglionic motor neuron, postganglionic motor neuron and effector
• the innervation of the suprarenal medulla is by the ___ part of the autonomic division

  sympathetic