The Sympathetic Nervous System (Sns) Quiz Questions
The sympathetic nervous system's primary process is to stimulate the body's fight-or-flight response. It is, however, constantly active at a basic level to maintain homeostasis homodynamic. An over active Sympathetic can lead to poor digestion, constipation, anxiety, shallow breathing and increased heart rate. Test your knowledge of this through the test below.
- 1.The secretions of the adrenal medulla act to supplement the effects of ____________________________.
- A.
Vagus nerve activity
- B.
Sympathetic stimulation
- C.
Neurosecretory substance
- D.
Parasympathetic innervation
- 2.Which of the following does not describe the ANS?
- A.
Involuntary nervous system
- B.
General visceral motor system
- C.
A system of motor neurons that innervates smooth and cardiac muscle and glands
- D.
A system of motor neurons that innervates all muscle cells
- 3.Preparing the body for the "fight-or-flight" response is the role of the ________________________________.
- A.
Somatic nervous system
- B.
Cerebrum
- C.
Parasympathetic nervous system
- D.
Sympathetic nervous system
- 4.The somatic and autonomic nervous system differ in all of the following except ____________.
- A.
To some degrees in target responses to their neurotransmitters
- B.
Their efferent pathways
- C.
All of the neurotransmitters
- D.
Their effectors
- 5.A drug that might be used specifically to reduce heart rate in cardiac patients could be _____________________.
- A.
A beta-blocker
- B.
Norepinephrine
- C.
Epinephrine
- D.
Anti cholinesterase
- 6.A parasympathetic ganglion that serves the eye is the ______________.
- A.
Submandibular ganglion
- B.
Pterygopalatine ganglion
- C.
Otic ganglion
- D.
Ciliary ganglion
- 7.Cardiovascular effects of the sympathetic division include all except ________________________.
- A.
Increase of heart rate and force
- B.
Dilation of the blood vessels serving the skin and digestive viscera
- C.
Constriction of most blood vessels
- D.
Dilation of the vessels serving the skeletal muscles
- 8.Ove 90% of all parasympathetic fibers are derived from cranial nerve number _______.
- A.
XII
- B.
VII
- C.
X
- D.
V
- 9.The "resting and digesting" division of the autonomic nervous system is the ______________________.
- A.
Somatic division
- B.
Sympathetic division
- C.
Peripheral nervous system
- D.
Parasympathetic division
- 10.Control of temperature, endocrine activity, and thirst are functions associated with the _______________________.
- A.
Medulla
- B.
Thalamus
- C.
Cerebellum
- D.
Hypothalamus
- 11.Which of these effectors are not directly controlled by the autonomic nervous system?
- A.
Cardiac muscle
- B.
Most glands
- C.
Smooth muscle
- D.
Skeletal muscle
- 12.Which of the following is not a result of parasympathetic stimulation?
- A.
Elimination of urine
- B.
Salivation
- C.
Dilation of the pupils
- D.
Increased peristalsis of the digestive viscera
- 13.Which of the following statements is not true?
- A.
Sympathetic has extensive branching of preganglionic fibers; parasympathetic has minimal branching of preganglionic fibers
- B.
Sympathetic division has short preganglionic and long postganglionic fibers; parasympathetic has long preganglionic and short postganglionic fibers
- C.
Sympathetic origin is craniosacral; parasympathetic is thoracolumbar
- D.
Sympathetic ganglia are within a few centimeters of the CNS; parasympathetic are close to visceral organs served
- 14.Sympathetic responses generally are widespread because _________________.
- A.
Preganglionic fibers are long
- B.
Inactivation of ACh is fairly slow
- C.
NE and epinephrine are secreted into the blood as part of the sympathetic response
- D.
Preganglionic fibers are short
- 15.Sympathetic nerves may leave the spinal cord at which vertebra?
- A.
First coccyx
- B.
Third lumbar
- C.
First thoracic
- D.
Second cervical
- 16.Autonomic ganglia contain _____________________________________________.
- A.
Both somatic afferent and efferent neurons
- B.
The cell bodies of motor neurons
- C.
Synapses between postganglionic fibers and their effectors
- D.
An outer connective tissue capsule around the cel bodies of preganglionic motor neurons
- 17.The parasympathetic fibers of the _____________ nerves innervate smooth muscles of the eye that cause the lenses to bulge to accommodate close vision.
- A.
Optic
- B.
Abducens
- C.
Oculomotor
- D.
Trochlear
- 18.Fibers that enter and leave the sympathetic chain without synapsing form structures called ____________________________.
- A.
White rami communicantes
- B.
Spinal nerves
- C.
Gray rami communicantes
- D.
Splanchnic nerves
- 19.Which of the following is not a plexus of the vagus nerve?
- A.
Cardiac
- B.
Pulmonary
- C.
Celiac
- D.
Esophageal
- 20.Visceral reflex arcs differ from somatic in that __________________________________.
- A.
Somatic arcs contain one additional component that visceral arcs do not possess
- B.
Visceral arcs involve two motor neurons
- C.
Visceral arcs contain two sensory neurons
- D.
Visceral arcs do not use integration centers
- 21.Once a sympathetic preganglionic axon reaches a trunk ganglion, it can do all but which one of the following?
- A.
Ascend or descend the trunk to synapse in another trunk ganglion
- B.
Pass through the trunk ganglion without synapsing with another neuron
- C.
Synapse with a parasympathetic neuron in the same trunk ganglion
- D.
Synapse with a ganglionic neuron in the same trunk ganglion
- 22.The parasympathetic tone __________________________________________.
- A.
Causes blood pressure to rise
- B.
Determines normal activity of the urinary tract
- C.
Prevents unnecessary heart deceleration
- D.
Accelerates activity of the digestive tract
- 23.The white rami communicantes _______________________________________.
- A.
Carry preganglionic axons to the sympathetic chain
- B.
Are unmyelinated
- C.
Are found only in the C1-T1 cord segments
- D.
Carry postganglionic fibers to the periphery
- 24.Beta-blockers ______________________________________________.
- A.
Increase a dangerously low heart rate
- B.
Are potent antidepressants
- C.
Have widespread sympathetic effects
- D.
Decrease heart rate and blood pressure
- 25.Erection of the penis or clitoris _________________________________________________________.
- A.
Is primarily under sympathetic control
- B.
Is primarily under parasympathetic control
- C.
Depends very little on autonomic activation
- D.
Is the result of coordinated activation by both sympathetic and parasympathetic input
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