18 Questions
Which division of the autonomic nervous system promotes a 'fight or flight' response?
Sympathetic nervous system
What effect does the sympathetic nervous system have on pupil size?
Dilates pupils
Which structure allows the sympathetic nervous system to provide vasodilation for the coronary vessels of the heart?
Ganglia
How does the parasympathetic nervous system affect blood flow to the gastrointestinal (GI) tract?
Increases blood flow
Which division of the autonomic nervous system stimulates orgasm?
Sympathetic nervous system
What effect does the parasympathetic nervous system have on bronchioles?
Dilates bronchioles
What is the main function of the parasympathetic nervous system in relation to digestion?
Stimulate salivary gland secretion
Which nerve branches impart parasympathetic control of the myocardium?
Vagus nerves
What effect does the parasympathetic nervous system have on the ciliary muscle?
Contraction
Which condition results from interruption of the sympathetic supply to the eye?
Miosis
Which anatomical site would a lesion affect to cause Horner’s Syndrome?
Cervical spinal cord
How does the parasympathetic nervous system contribute to closer vision?
Constriction of pupil and contraction of ciliary muscle
What neurotransmitter is usually released by neuron #1 in the sympathetic nervous system?
Acetylcholine
Where do synapses typically occur in the sympathetic nervous system?
Paravertebral chain ganglia
Which part of the spinal cord is associated with sacral parasympathetic outflow?
Sacral segments (S2-S4)
Which part of the body does the cranial parasympathetic outflow provide innervation to?
Head, thorax, and abdomen
What is the role of neuron #2 (postganglionic) in the sympathetic nervous system?
Releases norepinephrine
What is a characteristic effect of the sympathetic nervous system on organs?
Excitatory to all organs
Test your knowledge on the effects of the sympathetic nervous system. Learn about the characteristics of neuron #1 and neuron #2, where synapses occur, the neurotransmitters involved, and the overall impact on different organs.
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