What symptom does pupil shrink to have

summary

We all say that the eyes are the windows of the soul. Through the eyes, we can express our emotions, transmit the signals we want to express, and also communicate with the male god cute girls. However, my little friend told me that through the eyes, we can also observe some signs of physical illness, such as the narrowing of the pupils. What are the symptoms of the narrowing of the pupils?

What symptom does pupil shrink to have

The first is the conduction of most efferent cholinergic nerves (including motor nerve, sympathetic nerve, preganglionic fiber of parasympathetic nerve, parasympathetic nerve and postganglionic fiber of partial sympathetic nerve) in the human body, and the activity of effector organs is controlled by acetylcholine released by their terminals at the junction with cells; some parts of the central nervous system, such as the sensorimotor area of cerebral cortex, especially the deep cortex Acetylcholine is also involved in the transmission of impulses among pyramidal cells, caudate nucleus, thalamus and other nerve cells. Cholinergic neurotransmission must be combined with cholinergic receptors to produce effects. Cholinergic receptors are divided into muscarinic type and nicotinic type. The former is distributed in myocardium, smooth muscle, glands and other effector organs dominated by postganglionic cholinergic fibers, while the latter is distributed in plant ganglia and bone In the end plate of the iliac muscle, under normal conditions, the released acetylcholine is rapidly decomposed by the acetylcholinesterase existing in the tissue after completing its physiological function.

Second, when organic phosphorus enters the human body, its phosphoryl group is closely combined with the active part of the enzyme to form phosphoryl cholinesterase and lose the ability to decompose acetylcholine. As a result, a large amount of acetylcholine is accumulated in the body, and the only activity of acetylcholinesterase is inhibited, which makes the central nervous system and cholinergic nerve over excited. Finally, it turns into inhibition and failure, showing a series of symptoms and signs Signs: the cholinergic muscarinic receptors of some parasympathetic nerves and some sympathetic postganglionic fibers are excited, and then the smooth muscle contraction, gland secretion increase, pupil contraction, nausea, vomiting, abdominal pain, diarrhea and other symptoms like toxoplasmosis appear. When the cholinergic nicotinic receptors at the motor nerve and muscle junction are excited, muscle fiber tremor or convulsion (spasm) will occur; severe poisoning or late poisoning will turn into nicotinic symptoms such as muscle weakness or muscle paralysis.

Third: the cholinergic receptor between the synapses of the central nervous system cells is excited, causing dysfunction, headache, dizziness, restlessness, delirium and other exciting symptoms, and in severe cases, speech disorders, coma and respiratory central paralysis. In terms of circulatory system, there are not only muscarinic symptoms such as slow heart rate and decreased blood pressure, but also nicotinic symptoms such as increased blood pressure and accelerated heart rate.

matters needing attention

Once you find yourself or the people around you have these symptoms, you must be alert, go to the hospital as soon as possible to check whether there are any real problems in your body, find out early, treat early, and do not delay the best treatment. Finally, I wish you good health and happy mood.