内 means inner/endo 分泌 means to secrete. so i would like to translate 内分泌 as secrete into our inner body, which could differentiate with Exocrine gland 外分泌 which secrete to our outer body (外 means outer).
Why i said so. Example of Exocrine gland are Sweat Gland, Mucus secreting respiratory epithlium, Salivary gland, Gastric Gland, Pancreatic Gland, Prostate Gland, mammary gland and so on. these gland release their secretion to outer body. you might curious that is Gastrointestinal consider outer body? Yes! if you see it more clearly, it is a passage of external environment. Phylogenically, you can see the sea squirt who first develop the complete gastrointestinal modal like we human are having with mouth and anus, and they are basically in contact with the sea water which is outside our body.
Okay, now back to endocrine. after being secreted into inner body, where does the secretion/hormone go? if you look at the word 内 , there is a 人, which can be imagine as a blood vessel growing into a mass of endocrine tissue, 冂. This is an important fact to remember because gastrointestinal system got mixture of endocrine and exocrine gland,which sometimes can be quite confusing, thus it is essential to differentiate their feature. G cell is an endocrine component that release Gastrin that have the potential to stimulate parietal cell to produce acid secretion in stomach. The statement that sounds "G cell secrete gastrin into GUT LUMEN to stimulate acid secretion" is always FALSE! remember the blood vessel "人" that grow into the endocrine gland 冂. Hormone must carry in blood
分泌 is to secrete. where does it secreted to? to cardiovascular sistem. the 泌 is a good illustration of cardiovascular system which comprise of blood ( 氵)， the heart (心 )and the vasculature which is the (丿) sprut out from heart in the word 必. Why i keep on stressing the CardioVascular aspect of endocrine? cause sometimes when there is imbalance in endocrine system(失衡), some clinical findings can be made from the cardiovascular presentation. in Hyperthyroidism of Graves' disease, there might be audible bruit heard on the neck where the enlarged goitre with their overgrowing vasculature is located.
so remember endocrine, remember 内分泌
No comments:
Post a Comment