Textbook Question
Describe the anatomical relationship of the white and gray rami communicantes to the spinal nerve, and indicate the kind of fibers found in each ramus type.
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14. The Autonomic Nervous System
Introduction to the Autonomic Nervous System
Back14. The Autonomic Nervous System
Introduction to the Autonomic Nervous System
- Textbook Question
Dual innervation refers to situations in which
(a) Vital organs receive instructions from both sympathetic and parasympathetic fibers.
(b) The atria and ventricles of the heart receive autonomic stimulation from the same nerves.
(c) Sympathetic and parasympathetic fibers have similar effects.
(d) All of these are correct.
1164views - Multiple ChoiceParasympathetic innervation of which muscles results in lens accommodation in the eye?145views
- Multiple ChoiceWhich of the following cranial nerves functions in parasympathetic processes?290views
- Textbook Question
All preganglionic autonomic fibers release______at their axon terminals, and the effects are always_____ .
(a) norepinephrine, inhibitory
(b) norepinephrine, excitatory
(c) acetylcholine, excitatory
(d) acetylcholine, inhibitory
791views - Multiple ChoiceWhich of the following is a function of the somatic nervous system?342views
- Multiple ChoiceWhich of the following divisions of the autonomic nervous system is primarily responsible for increasing heart rate during compensated shock?97views
- Multiple ChoiceWhat is the primary difference between the somatic and autonomic nervous systems?462views
- Multiple ChoiceWhich organ system is primarily responsible for transporting nutrients, gases, and waste products throughout the body?372views
- Multiple ChoiceThe heart is innervated by the ______ nervous system.160views
- Multiple ChoiceAutonomic reflexes enable the autonomic nervous system (ANS) to control which of the following visceral functions?106views
- Textbook Question
Under which of the following circumstances would the diameter of peripheral blood vessels be greatest?
(a) Increased sympathetic stimulation
(b) Decreased sympathetic stimulation
(c) Increased parasympathetic stimulation
(d) Decreased parasympathetic stimulation
(e) Both increased parasympathetic and sympathetic stimulation
668views - Multiple ChoiceWhich of the following is true for preganglionic neurons in the autonomic nervous system?369views
- Multiple ChoiceWhich cranial nerve pair supplies many organs in the ventral body cavity?123views
- Multiple ChoiceIn the autonomic nervous system, what effect does the triggering of vasoconstriction and vasodilation have on the body?336views