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Gray’s anatomy online

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Presentation regarding the opening notes from Gray's anatomy. Quick run down of terminology and approaches. Available from www.AnatomyHQ.org

Presentation regarding the opening notes from Gray's anatomy. Quick run down of terminology and approaches. Available from www.AnatomyHQ.org

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  • 1. GRAY’S ANATOMY ONLINE
    www.AnatomyHQ.org
  • 2. Introduction
    “THE TERM human anatomy comprises a consideration of the various structures which make up the human organism. In a restricted sense it deals merely with the parts which form the fully developed individual and which can be rendered evident to the naked eye by various methods of dissection. Regarded from such a standpoint it may be studied by two methods: (1) the various structures may be separately considered—systematic anatomy; or (2) the organs and tissues may be studied in relation to one another—topographical or regional anatomy.”
  • 3. Methods
        It is, however, of much advantage to add to the facts ascertained by naked-eye dissection those obtained by the use of the microscope. This introduces two fields of investigation, viz., the study of the minute structure of the various component parts of the body—histology—and the study of the human organism in its immature condition, i. e., the various stages of its intrauterine development from the fertilized ovum up to the period when it assumes an independent existence—embryology. Owing to the difficulty of obtaining material illustrating all the stages of this early development, gaps must be filled up by observations on the development of lower forms—comparative embryology, or by a consideration of adult forms in the line of human ancestry—comparative anatomy. The direct application of the facts of human anatomy to the various pathological conditions which may occur constitutes the subject of applied anatomy. Finally, the appreciation of structures on or immediately underlying the surface of the body is frequently made the subject of special study—surface anatomy.
  • 4. Systematic Anatomy
    SYSTEMATIC ANATOMY.—The various systems of which the human body is composed are grouped under the following headings:
    Osteology—the bony system or skeleton.
    Syndesmology—the articulations or joints.
    Myology—the muscles. With the description of the muscles it is convenient to include that of the fasciæ which are so intimately connected with them.
  • 5. Systematic anatomy
    Angiology—the vascular system, comprising the heart, bloodvessels, lymphatic vessels, and lymph glands.
    Neurology—the nervous system. The organs of sense may be included in this system.
    Splanchnology—the visceral system. Topographically the viscera form two groups, viz., the thoracic viscera and the abdomino-pelvic viscera. The heart, a thoracic viscus, is best considered with the vascular system. The rest of the viscera may be grouped according to their functions: (a) the respiratory apparatus; (b) the digestive apparatus; and (c) the urogenitalapparatus.Strictly speaking, the third subgroup should include only such components of the urogenital apparatus as are included within the abdomino-pelvic cavity, but it is convenient to study under this heading certain parts which lie in relation to the surface of the body, e. g., the testes and the external organs of generation.
  • 6. Standard Terminology
    For descriptive purposes the body is supposed to be in the erect posture, with the arms hanging by the sides and the palms of the hands directed forward. The median plane is a vertical antero-posterior plane, passing through the center of the trunk. This plane will pass approximately through the sagittal suture of the skull, and hence any plane parallel to it is termed a sagittal plane. A vertical plane at right angles to the median plane passes, roughly speaking, through the central part of the coronal suture or through a line parallel to it; such a plane is known as afrontal plane or sometimes as a coronal plane. A plane at right angles to both the median and frontal planes is termed a transverse plane.
  • 7. Standard Terminology: 2
    The terms anterior or ventral, and posterior or dorsal, are employed to indicate the relation of parts to the front or back of the body or limbs, and the terms superior or cephalic, and inferior or caudal, to indicate the relative levels of different structures; structures nearer to or farther from the median plane are referred to as medial or lateral respectively.
  • 8. Standard Terminology: 3
    The terms superficial and deep are strictly confined to descriptions of the relative depth from the surface of the various structures; external and internal are reserved almost entirely for describing the walls of cavities or of hollow viscera. In the case of the limbs the words proximal and distal refer to the relative distance from the attached end of the limb.
    Gray’s Anatomy Online

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