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Nerve fibers in what division of the autonomic nervous system arise from the brainstem and the sacral region of the spinal cord?
Willy0312
Brain
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∙ 10y ago
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Which division of the autonomic nervous system secretes acetylcholine via cholinergic nerve fibers?
Parasympathetic nervous system .
Which division of the autonomic nervous system is involved in secreting norepinephrine via adrenergic nerve fibers?
Sympathetic nervous system .
Which division of the autonomic nervous system is characterized by short preganglionic and long postganglionic fibers?
The parasympathetic nervous system has long preganglionic and short postganglionic fibers
Does the the autonomic nervous system typically have thin fibers with little or no myelination?
yes.
What way is the somatic and autonomic nervous systems are similar?
I came on this to figure it out!
What is a somatic and an autonomic nervous system action?
Somatic is when you move on purpose. Autonomic is when you react without thinking.
How is stimuli recieved?
Through the nerve fibers of the affrent (sensory) division of the Peripheral nervous system.
What path is taken by the sympathetic fibers of autonomic nervous system?
They are referred to as thoracolumbar outflow and run parallel to the spinal cord in a series on connected ganglion.
What is the medial longitudinal fasciculus?
A bundle of fibers in the brainstem
What serves as a bridge between the brainstem and the cerebellum?
The Pons - The Pons includes a bridge of fibers that connects the brainstem with the cerebellum.
The autonomic nervous system contains two branches called the?
The autonomic nervous system also has two divisions: the sympathetic division and the parasympatheticdivision. These two divisions have antagonistic (opposing) effects on the internal organs they innervate (send nerves to act on).The sympathetic division, shown at the left, is the emergency system. It prepares the body to put out energy and to protect it from effects of injury. It shuts the gut down, speeds up the heart, increases blood pressure, dilates (makes bigger) the pupils of the eyes, makes more glucose (blood sugar) available in the blood for energy, etc. Cannon described these reactions as preparation for fight or flight (running away).The parasympathetic division, shown at the right, is the "housekeeping" division. It acts to replace and recover from the activities of living. Its action is (almost always) the opposite of the sympathetic division. It activates the gut for digestion, slows the heart rate, decreases the blood pressure, etc.
Portion of the brainstem composed of myelinated nerve fibers that connects to the cerebellum?
pons
