16 terms

chpt 14::::

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Which of the following does not describe the ANS?
A) a system of motor neurons that innervates smooth and cardiac muscle and glands
B) a system of motor neurons that innervates all muscle cells
C) involuntary nervous system
D) general visceral motor system
B) a system of motor neurons that innervates all muscle cells
Preparing the body for the "fight-or-flight" response is the role of the ________.
A) sympathetic nervous system
B) cerebrum
C) parasympathetic nervous system
D) somatic nervous system
A) sympathetic nervous system
The somatic and autonomic nervous systems differ in all of the following except ________.
A) their effectors
B) their efferent pathways
C) to some degree in target responses to their neurotransmitters
D) all of the neurotransmitters
D) all of the neurotransmitters
The "resting and digesting" division of the autonomic nervous system is the ________.
The "resting and digesting" division of the autonomic nervous system is the ________.
A) parasympathetic division
B) sympathetic division
C) somatic division
D) peripheral nervous system
A) parasympathetic division
Which of these effectors is not directly controlled by the autonomic nervous system?
A) smooth muscle
B) cardiac muscle
C) skeletal muscle
D) most glands
C) skeletal muscle
Which of the following statements is not true?
A) Sympathetic origin is craniosacral; parasympathetic is thoracolumbar.
B) Sympathetic ganglia are within a few centimeters of the CNS; parasympathetic are close to visceral organs served.
C) Sympathetic division has short preganglionic and long postganglionic fibers; parasympathetic has long preganglionic and short postganglionic fibers.
D) Sympathetic has extensive branching of preganglionic fibers; parasympathetic has minimal branching of preganglionic fibers.
A) Sympathetic origin is craniosacral; parasympathetic is thoracolumbar.
Sympathetic responses generally are widespread because ________.
A) inactivation of ACh is fairly slow
B) NE and epinephrine are secreted into the blood as part of the sympathetic response
C) preganglionic fibers are short
D) preganglionic fibers are long
B) NE and epinephrine are secreted into the blood as part of the sympathetic response
Fibers that enter and leave the sympathetic chain without synapsing form structures called ________.
A) white rami communicantes
B) gray rami communicantes
C) spinal nerves
D) splanchnic nerves
D) splanchnic nerves
Visceral reflex arcs differ from somatic in that ________.
A) visceral arcs contain two sensory neurons
B) somatic arcs contain one additional component that visceral arcs do not possess
C) visceral arcs involve two motor neurons
D) visceral arcs do not use integration centers
C) visceral arcs involve two motor neurons
Once a sympathetic preganglionic axon reaches a trunk ganglion, it can do all but which one of the following?
A) synapse with a parasympathetic neuron in the same trunk ganglion
B) synapase with a ganglionic neuron in the same trunk ganglion
C) ascend or descend the trunk to synapse in another trunk ganglion
D) pass through the trunk ganglion without synapsing with another neuron
A) synapse with a parasympathetic neuron in the same trunk ganglion
The sympathetic division is often casually referred to as the ________ system.
fight-or-flight
Two major classes of adrenergic receptors, ________ and ________, are found in the ANS.
alpha; beta
Sweat glands are innervated by the ________ fibers alone.
sympathetic
The ________ division alone stimulates the lens of the eye.
parasympathetic
The two cholinergic receptor types are ________ and ________.
nicotinic; muscarinic
The parasympathetic division uses only ________ as a neurotransmitter in the ganglionic neurons.
acetylcholine