Yes, coronary vessels have both parasympathetic and sympathetic innervation. Parasympathetic input leads to vasodilation of coronary vessels, while sympathetic input can cause vasoconstriction in response to stress or exercise. The balance between these two systems helps regulate blood flow to the heart.
Beta 2 adrenergic receptors in lung tissue cause dilation of bronchioles via sympathetic stimulation.
The autonomic nervous system is in charge of involuntary functions. There are two divisions-the sympathetic and parasympathetic. The sympathetic nervous system initiates the fight-or-flight response in emergency situations. The parasympathetic nervous system is referred to as the "rest and digest" stage in which the body "slows down" after the fight-or-flight response.
The autonomic nervous system, specifically the parasympathetic and sympathetic branches, control the pupillary response. The parasympathetic system causes pupillary constriction (miosis), while the sympathetic system causes pupillary dilation (mydriasis).
Yes, the autonomic nervous system can cause either activation or inhibition depending on whether the sympathetic division or parasympathetic division is active, and which target organ is being affected. The sympathetic division generally activates the fight-or-flight response while the parasympathetic division promotes rest and relaxation.
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.
it can cause you to die
no
Parasympathetic
The sympathetic nervous system inhibits digestive functions (fight or flight response), reducing blood flow to the digestive organs and slowing down digestion. The parasympathetic nervous system stimulates digestive functions (rest and digest response), increasing blood flow to the digestive organs and promoting digestion.
Yes you can. Parasympathetic rebound is a possible reaction of the parasympathetic nervous system during intense fear. It can cause death. Some soldiers literally die of fear in combat.
Sympathetic stimulation of the eye will cause dilation of the pupil (mydriasis) and relaxation of the ciliary muscle for far vision.