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Encyclopedia > Parenchyma

Parenchyma is a term used to describe a bulk of a substance. It is used in different ways in animals and in plants. The word Animals when used alone has several possible meanings in the English language. ... u fuck in ua ...


The term is New Latin, from Greek parenkhuma, visceral flesh, from parenkhein, to pour in beside : para-, beside + en-, in + khein, to pour.[1] New Latin (or Neo-Latin) is a post-medieval version of Latin, now used primarily in International Scientific Vocabulary cladistics and systematics. ... A term often used in usability enginering or user interface design Often conected with the Emotional feelings in a product signifies the WOW feeling when seeing a new product. ... Flesh by definition is composite of all the soft parts of the body of a human or animal which is between the skin and the bones. ... For the singer, see Rain (singer). ...


In animals

The parenchyma are the functional parts of an organ in the body.[2] This is in contrast to the stroma, which refers to the supporting tissue of organs, e.g.connective tissues. This article is about the biological unit. ... Prostate under a microscope This image shows the microscopic glands of the prostate In animal tissue, stroma refers to the connective, non-functional supportive framework of a biological cell, tissue, or organ. ...


Examples include:

Organ Parenchyma
kidney nephrons
lungs alveoli
spleen white pulp and red pulp
brain neurons

The kidneys are organs that filter wastes (such as urea) from the blood and excrete them, along with water, as urine. ... A nephron is the basic structural and functional unit of the kidney. ... Human respiratory system The lungs flank the heart and great vessels in the chest cavity. ... Detailed drawing of the alveoli from Grays Anatomy, 1918 - Schematic longitudinal section of a primary lobule of the lung (anatomical unit); r. ... The spleen is an organ located in the abdomen, where it functions in the destruction of old red blood cells and holding a reservoir of blood. ... The altered coat of the arterioles, consisting of adenoid tissue, presents here and there thickenings of a spheroidal shape, the white pulp (Malpighian bodies of the spleen, splenic lymphoid nodules). ... The red pulp (also called splenic pulp, but should not be confused with white pulp) is a soft mass of a dark reddish-brown color, resembling grumous blood It consists of a fine reticulum of fibers, continuous with those of the splenic trabeculae, to which are applied flat, branching cells. ... The human brain In animals, the brain (enkephalos) (Greek for in the skull), is the control center of the central nervous system, responsible for behavior. ... Neurons (also called nerve cells) are the primary cells of the nervous system. ...

In plants

Main article: Ground Tissue: Parenchyma

Parenchyma cells are thin-walled cells of the ground tissue that make up the bulk of most nonwoody structures, although sometimes their cell walls can be lignified. Parenchyma cells in between the epidermis and pericycle in a root or shoot constitute the cortex, and are used for storage of food. Parenchyma cells within the center of the root or shoot constitute the pith. Parenchyma cells in the ovary constitutes the nucellus and are brick-like in formation. Parenchyma cells in the leaf constitute the mesophyll; they are responsible for photosynthesis and they allow for the interchange of gases[3]. The types of ground tissue found in plants develops from ground tissue meristem and consists of three simple tissues: Parenchyma (have retained their protoplasm) Collenchyma (have retained their protoplasm) Sclerenchyma (have lost their protoplasm in mature stage, i. ... Drawing of the structure of cork as it appeared under the microscope to Robert Hooke from Micrographia which is the origin of the word cell being used to describe the smallest unit of a living organism Cells in culture, stained for keratin (red) and DNA (green) The cell is the... The types of ground tissue found in plants develops from ground tissue meristem and consists of three simple tissues: Parenchyma (have retained their protoplasm) Collenchyma (have retained their protoplasm) Sclerenchyma (have lost their protoplasm in mature stage, i. ... This article is about the plants used in cooking and medicine. ... Cross-section of all skin layers Optical Coherence Tomography tomogram of fingertip, depicting stratum corneum (~500µm thick) with stratum disjunctum on top and stratum lucidum (connection to stratum spinosum) in the middle. ... Found in the stele of plants, the pericycle is a cylinder of parenchyma cells that lies just inside the endodermis. ... For other uses, see Root (disambiguation). ... This article is about the plant section. ... In botany the cortex is the outer portion of the stem or root of a plant, bounded on the outside by the epidermis and on the inside by the pericycle. ... The centre dark spot (about 1 mm diameter) in this yew wood is the pith Elderberry shoot cut longitudinally to show the broad, solid pith (rough-textured, white) inside the wood (smooth, yellow-tinged). ... This article is about the leaf, a plant organ. ...


References

  1. ^ Parenchyma at eMedicine Dictionary
  2. ^ http://www.siumed.edu/~dking2/intro/glands.htm#7
  3. ^ http://www.botany.uwc.ac.za/sci_ed/grade10/anatomy/leaves.htm

  Results from FactBites:
 
Parenchyma - Wikipedia, the free encyclopedia (199 words)
Parenchyma cells are thin-walled cells of the ground tissue that make up the bulk of most nonwoody structures, although sometimes their cell walls can be lignified.
Parenchyma cells in between the epidermis and pericycle in a root or shoot constitute the cortex, and are used for storage of food.
Parenchyma cells within the center of the root or shoot constitute the pith.
Botany online: Dermal Tissues, Parenchyma and Assimilation Tissues - Ground Tissue (1209 words)
The pith of the shoots, the storage tissue of the fruits, the seeds, the roots and other underground organs are all parenchyma tissues, as is the mesophyll (the assimilation tissue of leaves).
Parenchyma cells are not differentiated, neither morphologically nor physiologically.
Parenchyma tissues (from the pith of the shoot, for example), can be cultivated in appropriate synthetic culture media and are thus prompted to divide.
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