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stem in Biological Dictionary

Stem

A stem is one of two main structural axes of a vascular plant. The stem is normally divided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence (flowers), cones or other stems etc.... Plant stem , the above ground structures that have vas...

Xylem

...clopedia article about xylem . Information about xylem in the Columbia ... wood wood, botanically, the xylem tissue that forms the bulk of the stem of a ... Xylem vessels comprise a vertical chain of lengthened, dead cells known as vessel elements. ... xylem is an important strengtheni...

Vessel cell

... of nerve and blood vessel cell precursors. ... It is believed that stem cells have the potential to be any cell in the body. ... cells becom... cell spurs growth of vessels and heart muscle. November 10, 2003 ... stem cell clone" found in adult bone marrow regenerated blood vessels and ....

Vascular cambium

...rds), and is located between these tissues in the stem and root. A few leaves even have a vascular ... ... bundles forming a distinct ring visible when the stem is viewed in cross section. The outside ... Th...adds new xylem cells toward the inside of the stem and ... Growth Rings: growth rings are formed by ...

Upper epidermis

... terms,biology abbreviations ... held horizontally, upper epidermis is directly ... Section of a leaf: chlorophyll containing outgrowth of a stem or branch; ... Cuticle: thin superficial skin of a leaf. Upper epidermis : outer layer of the leaf. ... Information relating to the skin incl...

Umbilical cord

... to umbilical cord prolapse are largely related ... Enables parents to store their newborn's umbilical cord blood as a potential source of stem cells. UMBILICAL CORD / 391. Omphalomesenteric Cyst/ 391. Allantoid Cyst/ 392. VASCULAR LESIONS OF THE ... term, the mean length of the umbili...

Tracheids

... can work even when the vessels ... End walls of Blechnum brasiliense stem tracheids . ... Cells intermediate between tracheids and vessel elemen...nodes 3:3; buds with scales; nectaries as ... Cabombaceae + Nymphaeaceae: stem rhizomatous; tracheids with meshwork of coarse ... ... by a branch or...

Telomerase

...telomeres contain condensed DNA material, giving... telomerase ( ) n. An enzyme that is found in the telomeres of chromosomes in germ cells, stem cells, and most cancer cells and that preserves the Telomerase is an enzymatic ribonucleoprotein complex that acts as a reverse ... Telomer...

Synapomorphy

...ue ... and phylogeny, which define homology as synapomorphy (Cracraft ... ... event, recognized by possessing the clade's synapomorphy . See: stem group. ... synapomorphy -- A character which is derived, and because it is shared by the ... However, no clear synapomorphy —shared derived c...

Stomata

...r -mas . Botany. One of the minute pores in the epidermis of a leaf or stem through which gases and water vapor pass ... or process of transpiring,...e stomata of plant tissue or the pores of the ... · Meristem · Root · stem · Stoma · Vascular tissue · Wood. Plant ... Dicotyledons usually hav...

Stolon

...h another word or see stolon on Thesaurus | Reference ... Rhizoctonia stem and stolon canker, also called black scurf, is an extremely common probl...heir entirety, be modified to serve as organs of ... An introduction to stem modifications ... bound to leave behind at least one stolon section, fro...

Stoma

... In botany, a stoma is a pore, found in the leaf and stem epidermis that is used for gas exchange. The pore is formed by a pair of...r -mas . Botany. One of the minute pores in the epidermis of a leaf or stem through which gases and water vapor pass Stoma (medicine) For other m...

Stipe

... for the "mumbling" style of his early career and for his complex, surreal lyrics, as well as... In mycology a stipe refers to the stem or stalk-like feature supporting the cap of a mushroom. Like all tissues of the mushroom other than the hymenium, the stipe is composed of sterile ...

Sterile cell

...s abort prior to completing meiosis (Figs. ... cells varied significantly between fertile and sterile plants. ... S1569 Stemline Mesenchymal stem Cell Expansion Medium Without L-glutamine, liquid, sterile -filtered, cell culture tested Developed to promote the optimal expansion ... Usi...

Stem cell

... stem cells are cells found in most, if not all, mult...verse range of specialized cell ... Embryonic stem cells (ES cells) are stem cells derived from the inner cell mass of an ea...

Stele

...es. Stele - Definition of Stele at Dictionary.com a free online dictionary with ... stele (stēl, stē'lē) The central core of tissue in the stem or root of a ... Find hotels near Beilin Museum Stele Forest at Hotels.com. Hotels.com offers Beilin Museum Stele Forest hotel reviews from pe...

Stalk

... ", Purcell, Pathé and Mullen concluded ... Stalk , a plant stem or structure resembling a plant stem, which can include a ... The stal...alk " ... Stalk Stalk may refer to: In biology Stalk , a plant stem or structure resembling a plant stem, which can include a pedicel, pedun...

Starch

...d source for... starch n. A naturally abundant nutrient carbohydrate, (C 6 H 10 O 5 ) n , found chiefly in the seeds, fruits, tubers, roots, and stem pith of resistant starch Starch that escapes digestion in the small intestine but can be fermented by bacteria in the large intestine ...

Spinal cord

...f blood or fluid can compress the spinal cord and damage it. ... Clinical evidence in regards to the treatment of Spinal Cord Injury using stem cells. ... Spinal cord injuries constitute some of the most debilitating of conditions. ... According to the National Spinal Cord Injury A...

Spermatogonia

...a , 5 Sertoli cell, 6 Myofibroblasts, ... The stem cells involved are called spermatogonia and are a specific type of stem ... Type B spermatogonia undergo mitosis to...us tubules consist of diploid spermatogonia , stem cells that are the ... spermatogonia to stimu...

Spermatogenesis

...albino ... In males, spermatogenesis , or the production of sperm, occurs. ... Spermatogenesis is the developmental pathway from spermatogonial stem cell to ... ... cells of spermatogenesis . ... terminal phase of spermatogenesis is called spermiogenesis and ... Spermatogenesis is re...

Sperm cells

...d can be significantly diminished by ... Adult stem cells extracted from human bone marrow have b...are created. ... As Moreno points out, coaxing stem cells into sperm may be the first step, but .... the generation of sperm cells from embryonic stem cells . ... Creation of sperm from frozen non-...

Somatic cells

...us, Word of the Day, and word games. Somatic stem cells serve two functions: ... Pluripotent Somatic stem Cells ... The fact that somatic / adult stem cells exist throughout an individual's ... ....

Somatic cell

...h a donor nucleus . It can be used in embryonic stem cell research, or,... ... where somatic re...donors on the ... The International Society for stem Cell Research is an independent, nonprofit ... ...ich a somatic cell is fused with an embryonic stem cell line, thereby sending ... ...

Skin cell

...With Results-Oriented Skincare from Cellular Skin Rx. ... Researchers find breakthrough non-viral method for reprogramming skin cells into stem cells ... This is the first time they've worked on human skin cells . ... Description of the skin and the importance of proper care of yo...

Sex cells

.... 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41 ... stem cells taken from the muscles of female mice are better at regenerating tissue than those taken from male mice, a new study finds. ...

Serum

...at the edge of a medical breakthrough but needs more time. Unfortunately, a greedy pharmaceutical company is pressuring Dr. K to... Offers plant stem cell based in-home spa treatment for cellulite. MySpace Music profile for Serum - NEW LIQUID V & CRITICAL PROMOS OUT NOW! ... SERUM - UL...

Secondary xylem

...e tracheids in pine secondary xylem . ... Secondary Growth. Pine stem cross-section showing xylem and phloem ... Drimys secondary xylem ray in transverse section of a stem ... in secondary xylem , laid down by a meristem called the vascul...

Secondary growth

...clear periderm. ... Secondary Growth in the Tomato Stem. A Closer Look ... Here, secondary growth is just beginning. ... To go back to the stem secondary growth main page click here. ... Textbook Reference - Figure 35.19, p. 696 ... C. This is called secondary growth and it re...

Secondary root

...y xylem accumulates, the "girth" (lateral dimensions) of the stem and root increases. ... Secondary roots branch from it. Xylem -...s secondary xylem accumulates, the "girth" (lateral dimensions) of the stem and root increases. ... Secondary Growth in Roots ... towards the...

Secondary phloem

...s alternately with ... It is certain that the secondary phloem in the stem is very important not only ... The secondary . phloem formed layers ... in much greater amounts than the secondary phloem . ... ... plant stem showing primary and secondary xylem and phloem [1] In vascular plants...

Roots

...that typically lies below the surface of the soil. This is not always the case, however, since a root can also be aerial or aerating . Furthermore, a stem normally... The Roots are a Grammy award winning American hip hop band from Philadelphia, Pennsylvania. They are famed for beginning with a ja...

Root cap

...at typically lies below the surface of the soil. This is not always the case, however, since a root can also be aerial or aerating . Furthermore, a stem normally... Young root tip: axis of the plant which grows in the opposite direction from the stem, maintain the ... Root cap : envelope tha...

Rhizome

...y, a rhizome is a characteristically horizontal stem of a plant that is usually found underground, o...e called a rhizome . A rhizome as subterranean stem is absolutely different from roots ... Larger q...ncyclopedia. ... rhizome - a horizontal plant stem with shoots above and roots below serving as a ...

Receptacle

... ... the biological meaning of receptacle . ... In botany, the receptacle is the thickened part of a stem from which the ... en.wikipedia.org/wiki/ Receptac le " ... Definition of receptacle from the Merriam-Webster Online Dictionary with audio...

Radial canal

...nal . The 16mm radial reamer is introduced into the radial ... canal is enlarged with the 18mm radial reamer. A slight press-fit of the trial stem in ... ... stone canal ---> ring canal around mouth ---> radial canals ... lateral canals connect the radial canal to cylindri...

Pseudoknot

... A pseudoknot is an RNA secondary structure containing at least two stem-loop structures in which half of one stem is intercalated between the two halves of another stem. The pseudoknot was first recognized in the turnip yellow mosaic virus in 1982. Pseudoknot...

Primary growth

...rated near the tip and results in the root growing in length. ... Primary stem Growth : begins at the tip of the terminal bud in ... ... Biology > Home > Lessons&Download > stem growth > Primary growth ... Palm trees (dicots) show only primary...

Pons

...the... pons n. , pl. pontes . A slender tissue joining two parts of an organ. A band of nerve fibers on the ventral surface of the brain stem that links Jean Louis Pons French astronomer (1761–1831) Born at Peyres in France, Pons started his astronomical work in Marseilles before mov...

Pith

... Pith is a substance that is found in vascular plants. It consists of soft, spongy parenchyma cells, and is located in the center of the stem in eudicots and in the center of the roots in monocots. It is encircled by a ring of xylem (woody tissue), and outside that, a... The pith h...
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