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What else can I help you with?
Does morphine affect the parasympathetic or the sympathetic nervous system?
Sympathetic
How do sympathetic and parasympathetic nerves affect a pacemaker?
Sympathetic nerves increase the heart rate by releasing norepinephrine, while parasympathetic nerves decrease the heart rate by releasing acetylcholine. This affects the pacemaker by altering its firing rate and influencing overall heart rhythm.
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.
How does the parasympathetic nervous system affect constipation?
The parasympathetic nervous system allows for the relaxation of the GI muscles, which allows excretion. So in other words, constipation is more a product of the sympathetic nervous system, which if stimulated, will divert blood flow from the gut and delay defecation, causing constipation. If the parasympathetic nervous system is blocked or the sympathetic system stimulated, constipation can result.
How would a drug that inhibits the parasympathetic nervous system affect a persons pulse?
It would increase the pulse, providing it acted upon the cardiac conduction system. There are parasympathetic antagonists which act on other parts of the body, such as the bladder; such drugs would not affect the pulse (theoretically).
How do sympathetic and parasymphatetic activity affect gastric secretion?
Sympathetic activity inhibits gastric secretion by causing vasoconstriction of blood vessels in the stomach lining. Parasympathetic activity stimulates gastric secretion by increasing blood flow and activating gastric glands, leading to increased production of stomach acid and digestive enzymes.
In what way do the parasympathetic and the sympatheticnervous systems work together?
Yes. The vagus nerve is a parasympathetic nerve that is almost always stimulating the healthy heart to have a heart rate less than the inherent rate of the SA node. The sympathetic innervation on the heart is minimal and only important during exercise.
What does the parasympathetic nervous system release to affect heart rate?
epinephrine
What is the heart's pacemaker and what can causes it to change the rate?
The heart's pacemaker is the sinoatrial (SA) node, a group of cells located in the right atrium that generates electrical impulses to regulate heartbeats. Factors that can cause the SA node to change its rate include physical activity, stress, hormonal changes (such as adrenaline release), and autonomic nervous system influences (sympathetic or parasympathetic stimulation). Additionally, conditions like fever, electrolyte imbalances, and certain medications can also affect the pacemaker's activity.
Do nerves affect your heart rate?
there are nevers that affect your heart rate there are twoSympathetic and parasympathetic (vagus).hope i helped :D
What parts of the body does reflex sympathetic dystrophy affect?
"Reflex Sympathetic Dystrophy usually affects the skin and blood vessles. However, it can easily affect any part of the body."
How does sympathetic vasoconstriction or vasodilation affect blood flow in the body?
Sympathetic vasoconstriction decreases blood flow by narrowing blood vessels, while sympathetic vasodilation increases blood flow by widening blood vessels.
