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What cardiac structure is poorly innervated by the parasympathetic nervous system?
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∙ 10y ago
Ventricles
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∙ 10y ago
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Which parts of the gastrointestinal tract are innervated by the somatic nervous system?
GI tract is innervated locally by the enteric nervous system and activity of the Cajal pacemaker cells and by the autonomic nervous system (sympathetic / parasympathetic). It is not innervated by the somatic nervous system. I'm a neurobiologist/physiologist.
Muscarinic receptors are found on?
Organs innervated by the parasympathetic nervous system. One addition to that are sweat glands. They are innervated by sympathetic nervous system, however, they have muscarinic receptors, NOT adrenergic receptors.
What is innervate?
Innervated by both the sympathetic and parasympathetic nervous system. This allows for both branches of autonomic NS (sympathetic and parasympathetic) to precisely control an organ's activity.
What parts of the nervous system controls digestion?
The parasympathetic nervous system is responsible for digestion. The GI tract is innervated by the Gastric nerve, otherwise known as the Vagus nerve.
What are motor end plates associated with?
Motor end plates are associated with cholinergic receptors. It can be muscarinic if it is innervated by the post ganglionic parasympathetic nervous system. If under sympathetic, it will be innervated by adrenergic receptors (exception being sweat glands). For somatic nervous system it is nicotinic.
What nervous system is a division of the peripheral nervous system that deals with involuntary movement of smooth and cardiac muscles?
That system is called as autonomic nervous system. It is composed of sympathetic and parasympathetic nervous systems.
What is the effects of parasympathetic stimulation on smooth muscle of blood vessels?
Nothing. The blood vessels are not innervated by the parasympathetic autonomic nervous system; only the sympathetics innervate blood vessels. Their action results in constriction of the smooth muscle in the walls of the vessels.
Which structures would not be innervated by the sympathetic nervous system A. skeletal muscle B. glands C. smooth muscle D. cardiac muscle?
skeletal muscles
How does the synaptic nervous system affect the iris?
The iris is not innervated directly, however the iris sphincter muscle is affected by the sympathetic and parasympathetic nervous systems. Sympathetic stimulation causes pupil dilation while parasympathetic nervous system causes pupil constriction. The parasympathetic response is quicker because of the proximity of a parasympathetic ganglion (ciliary ganglion) to the eye. The sympathetic response is slower because all sympathetic ganglia are confined to the spinal cord. This is the reason why people adjust faster to a bright shining light than darkness.
Sympathetic and parasympathetic nervous system's are subdivisions of what nervous system?
The sympathetic and parasympathetic nervous systems are subdivisions of the autonomic nervous system.
Decreasing heart rate is under the control of what nervous division?
Parasympathetic
What is dual innervation?
Innervated by both the sympathetic and parasympathetic nervous system. This allows for both branches of autonomic NS (sympathetic and parasympathetic) to precisely control an organ's activity.
