FACTOID # 6: Michigan is ranked 22nd in land area, but since 41.27% of the state is composed of water, it jumps to 11th place in total area.
 
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Encyclopedia > Roots of the hair
Root of the hair
Section of skin, showing the epidermis and dermis; a hair in its follicle; the Arrector pili muscle; sebaceous glands.
Latin radix pili
Gray's subject #234 1067
Dorlands/Elsevier r_02/12687998

The root of the hair ends in an enlargement, the hair bulb, which is whiter in color and softer in texture than the shaft, and is lodged in a follicular involution of the epidermis called the hair follicle. Image File history File links Gray944. ... In zootomy and dermatology, skin is an organ of the integumentary system made up of multiple layers of epithelial tissues that guard underlying muscles and organs. ... Look up Epidermis in Wiktionary, the free dictionary. ... The dermis is the layer of skin beneath the epidermis that consists of connective tissue and cushions the body from stress and strain. ... Young Girl Fixing her Hair, by Sophie Gengembre Anderson Hair is a filamentous outgrowth of dead cells from the skin, found only in mammals. ... A hair follicle, showing its Arrector pili muscle attached on the right. ... The sebaceous glands are glands found in the skin of mammals. ... Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ... Elseviers logo Elsevier, the worlds largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. ... Look up Epidermis in Wiktionary, the free dictionary. ... A hair follicle is part of the skin that grows hair by packing old cells together. ...


This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant. The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


  Results from FactBites:
 
Root - LoveToKnow 1911 (1382 words)
This kind of root is sometimes shortened, and becomes swollen by storage of food-stuffs, forming the conical root of carrot, or the fusiform or spindle-shaped root of radish, or the napiform root of turnip.
Roots are usually underground and colourless, but in some cases where they arise from the stem they pass for some distance through the air before reaching the soil.
Leaf-buds are sometimes formed on roots, as in plum, cherry and other fruit trees; the common elm affords an excellent example, the young shoots which grow up in the neighbourhood of a tree arising from the roots beneath the soil.
Botany online: Dermal Tissues, Parenchyma and Assimilation Tissues - Rhizodermis (785 words)
Root hairs increase the absorbing surface of the root.
H. DITTMER (Department of Botany, University of Iowa) calculated the root surface of a rye plant (Secale cereale) in 1937.
Root hairs are always in close contact with soil particles.
  More results at FactBites »

 
 

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