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Chyme or chymus (/ k aɪ m /; from Greek χυμός khymos, "juice" [1] [2]) is the semi-fluid mass of partly digested food that is expelled by the stomach, through the pyloric valve, into the duodenum [3] (the beginning of the small intestine).
Parenchyma is a versatile ground tissue that generally constitutes the "filler" tissue in soft parts of plants. It forms, among other things, the cortex (outer region) and pith (central region) of stems, the cortex of roots, the mesophyll of leaves, the pulp of fruits, and the endosperm of seeds.
Chymases (EC 3.4.21.39, mast cell protease 1, skeletal muscle protease, skin chymotryptic proteinase, mast cell serine proteinase, skeletal muscle protease) are a family of serine proteases found primarily in mast cells, though also present in basophil granulocytes (e.g. alpha chymase mcpt8).
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
The term parenchyma is Neo-Latin from the Ancient Greek word παρέγχυμα parenchyma meaning 'visceral flesh', and from παρεγχεῖν parenkhein meaning 'to pour in' from παρα-para-'beside' + ἐν en-'in' + χεῖν khein 'to pour'. [4] Originally, Erasistratus and other anatomists used it for certain human tissues. [5]
There are two main views on the derivation of the Greek word. According to one, the word comes from the greek χημεία (chimeía), pouring, infusion, used in connexion with the study of the juices of plants, and thence extended to chemical manipulations in general; this derivation accounts for the old-fashioned spellings "chymist" and "chymistry".
To research the developmental biology of the bird embryo, researchers produced artificial quail-chick chimeras in 1987. By using transplantation and ablation in the chick embryo stage, the neural tube and the neural crest cells of the chick were ablated, and replaced with the same parts from a quail. [ 53 ]
V. (short for the Latin: vidimus, meaning "we have seen") means that the author inspected the original type specimens and are basing their statements on first-hand experience. Sometimes the opposite is expressed as "non v." (non vidimus), meaning that the original has never been observed, as is the case with many kinds of fungal spore, for ...