info: ANATOMY(Site not responding. Last check: 2007-11-04)
Anatomy (from the Greek anatome, from ana-temnein, to cut up), is the branch of biology that deals with the structure and organization of living things.
Animal anatomy may include the study of the structure of different animals, when it is called comparative anatomy or animal morphology, or it may be limited to one animal only, in which case it is spoken of as special anatomy.
From the morphological point of view, however, human anatomy is a scientific and fascinating study, having for its object the discovery of the causes which have brought about the existing structure of humans, and needing a knowledge of the allied sciences of embryology or developmental biology, phylogeny, and histology.
www.info-austria.org /Anatomy (794 words)
eMedicine - Hand, Finger Nail and Tip Injuries : Article by Bradon J Wilhelmi, MD(Site not responding. Last check: 2007-11-04)
The lunula is the white semicircle at the base of the nail bed.
The proximal one third of the nailbed, from the nail fold to the edge of the lunula, is the germinal matrix.
The two thirds of the nailbed distal to the lunula is the sterile matrix or ventral nail.
The superficial, horny part of the nail consists of a greatly thickened stratum lucidum, the stratum corneum forming merely the thin cuticular fold (eponychium) which overlaps the lunula; the deeper part consists of the stratum mucosum.
The cells in contact with the papillæ of the matrix are columnar in form and arranged perpendicularly to the surface; those which succeed them are of a rounded or polygonal form, the more superficial ones becoming broad, thin, and flattened, and so closely packed as to make the limits of the cells very indistinct.
The nails grow in length by the proliferation of the cells of the stratum mucosum at the root of the nail, and in thickness from that part of the stratum mucosum which underlies the lunula.
Above the proximal nail fold, the white half-moon at the base of the nail is the lunula.
The lunula is an extension of the matrix.
Because the nail plate is still hardening as it grows over the lunula, it is soft and easily damaged - It is important that during a nail service care is used while filing or drilling on the natural nail.
The nail plate distal to the lunula is usually pink, because of the vascularity of the skin beneath it.
The cuticle is an outgrowth of the proximal nail fold.
Curiously, nail growth is faster on the right hand, on the larger fingers, during daylight and in summer.[1] Minor nail trauma and nail biting may also enhance nail growth, while illness usually slows it down.
The matrix is a highly specialized epithelial structure that manufactures the bulk of the nail plate.
The distal matrix (lunula) makes the bottom of the nail plate that is bonded to the nail bed, it is a lighter color as it mixes with the matrix cells.
http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=Pu bMed&lis t_uids=8647987&dopt=Abstract The lunula is the visible portion of the distal nail matrix that extends beyond the proximal nailfold.
Nail Anatomy(Site not responding. Last check: 2007-11-04)
Grace Fields ===================================================== Hi Isaiah due to the specificity of your question i looked at an specialist and i quote: "The lunula.
The lunula is the visible portion of the distal nail matrix that extends beyond the proximal nailfold.
Alterations in the morphologic features or color (or both) of the lunula can be an indication of either a cutaneous or a systemic disorder." Thanks for asking Newton!
RTE News:(Site not responding. Last check: 2007-11-04)
The show also says that it put the question under scrutiny - "Where is the lunula located in the human body?" - to a consultant cardiologist, a professor of anatomy, a doctor in a department of anatomy and two eminent heart surgeons.
Mr O'Doherty said that the lunula was located in the heart.
Heart surgeon Maurice Nelligan told the programme this morning that the lunula was definitely a section of the heart.
Malling College - Holistic Massage, Beauty and Nutrition(Site not responding. Last check: 2007-11-04)
Anatomy and Physiology - bones of the skull, muscles of the face and neck, cranial nerves, superficial arteries and veins, and the lymphatic and endocrine system
Composition and structure of the nail, including the matrix, nail wall, lunula, nail bed, nail plate and free edge
Study of all tools and materials used including selection, care, hygiene, use and correct handling.