In some leaves, as in the barberry, the veins are hardened, producing spines without any parenchyma.
It consists of two elements—sclerenchyma and parenchyma cells.
The bulk of the skeleton had fallen away and the parenchyma had wholly perished.
The parenchyma in the darker places on section did not crepitate.
Besides the tracheae and tracheids already noted are such cells as "wood fiber," "fibrous cells," and "parenchyma."
The parenchyma of the barks abounds in starch and oxalate of lime, or else contains a soft brown deposit.
In skeleton leaves, or leaves in which the parenchyma is removed, this arrangement is well seen.
The commonest of the latter are inflammations of the parenchyma of the lungs.
The parenchyma of the beet is a spongy mass, whose cells are filled with juice.
To ascertain the presence of bubble-cells in the parenchyma of a Spongillid.
1650s, Modern Latin, from Greek parenkhyma "something poured in beside," from para- "beside" (see para- (1)) + enkhyma "infusion," from en- "in" + khein "to pour" (see found (v.2)). In ancient physiology, the stuff that was supposed to make up the liver, lungs, etc., which was believed to be formed from blood strained through the capillaries and congealed.
parenchyma pa·ren·chy·ma (pə-rěng'kə-mə)
The distinguishing cells of a gland or organ, contained in and supported by the stroma.
The basic tissue of plants, consisting of cells with thin cellulose walls. The cortex and pith of the stem, the internal layers of leaves, and the soft parts of fruits are made of parenchyma. In contrast to sclerenchyma cells, parenchyma cells remain alive at maturity. They perform various functions, such as water storage, replacement of damaged tissue, and physical support of plant structures. Chloroplasts, the organelles in which photosynthesis takes place, are found in parenchyma cells. Compare collenchyma, sclerenchyma.