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Chapter 14: Autonomic Nervous System
Terms in this set (35)
Short preganglionic, long postganglionic fibers
What letter shows a myelin sheath
Control of temperature, endocrine activity, and thirst are functions associated with the ____________
Which of the following appears to exert the most direct influence over autonomic functions?
The parasympathetic fibers of the ___________ nerve stimulate many large glands in the head such as the nasal and lacrimal glands
The sympathetic and parasympathetic divisions of the ANS have the same effect on most body organ systems
The secretions of the adrenal medulla act to supplement the effects of _________
What letter shows the cell body of a somatic motor neuron?
Emotions influence autonomic reactions primarily through integration in the _________
An erection (vasodilation) of the penis or clitoris __________
Is primarily under parasympathetic control
The parasympathetic ganglion that serves the lacrimal gland and nasal mucosa is the ___________
Which is an exclusively sympathetic function?
Regulation of body temperature
Which of the following drug classes would be useful for smoking cessation products?
Which type of drug would be useful in dilating the pupils for an examination of the retina
Muscarinic receptor inhibitor
What letter shows the cell body of an ANS preganglionic neuron?
Decreases heart rate
Active during "fight or flight" responses
The route of major parasympathetic outflow from the head is via the ___________
Vagus (X) nerves
The mushroom poison muscarine can bind to receptors on ___________
All effector cells stimulated by postganglionic cholinergic fibers
The effect of beta blocker drugs is to increase blood pressure
Over 90% of all parasympathetic fibers are derived from cranial nerve __________
Which of the following is NOT a result of parasympathetic stimulation?
Dilation of the pupils
Secreted by preganglionic sympathetic fibers
Which of the following is a function of the parasympathetic division?
Contracts smooth muscle of the bladder wall and relaxes urethral sphincter
Is characterized by exaggerated vasoconstriction in the extremities
The autonomic nervous system may cause activation or inhibition, depending on the division that is active and the target that is affected
Which target organ receives dual innervation
Known to be active during "rest and digest" responses
What letter shows the cell body of an ANS postganglionic neuron?
Stimulates ciliary muscles of the eye, which makes the lens bulge for close vision
Secreted by preganglionic parasympathetic fibers.
The smooth muscle of the digestive viscera is served largely by the __________
Vagus (X) nerves
Secreted by postganglionic parasympathetic fibers
Sympathetic nerves may leave the spinal cord at which vertebrae?
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