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Human anatomy is the scientific study of the morphology of the adult human. It is subdivided into gross anatomy and microscopic anatomy . Gross anatomy (also called topographical anatomy, regional anatomy, or anthropotomy) is the study of anatomical structures that can be seen by unaided vision.
In the history of chemistry, amorphism was recognised even before the discovery of the nature of the exact atomic crystalline lattice structure. [1] The concept of amorphism can also be found in the fields of art, [ 2 ] biology , archaeology and philosophy [ 3 ] as a characterisation of objects without form, or with random or unstructured form.
A convex polyhedron whose faces are regular polygons is known as a Johnson solid, or sometimes as a Johnson–Zalgaller solid [3]. Some authors exclude uniform polyhedra from the definition. A uniform polyhedron is a polyhedron in which the faces are regular and they are isogonal ; examples include Platonic and Archimedean solids as well as ...
In condensed matter physics and materials science, an amorphous solid (or non-crystalline solid) is a solid that lacks the long-range order that is characteristic of a crystal. The terms " glass " and "glassy solid" are sometimes used synonymously with amorphous solid; however, these terms refer specifically to amorphous materials that undergo ...
Gross anatomy (also called topographical anatomy, regional anatomy, or anthropotomy) is the study of anatomical structures that can be seen by the naked eye. [1] Microscopic anatomy is the study of minute anatomical structures assisted with microscopes, which includes histology (the study of the organization of tissues), [1] and cytology (the ...
Anatomy is often described in planes, referring to two-dimensional sections of the body. A section is a two-dimensional surface of a three-dimensional structure that has been cut. A plane is an imaginary two-dimensional surface that passes through the body. Three planes are commonly referred to in anatomy and medicine: [1] [2]: 4
Trace elements are less than 1% combined (and each less than 0.1%). Element: Symbol: Percent mass: Percent atoms: Oxygen O 65.0 24.0 Carbon C 18.5 12.0 Hydrogen H 9.5 62.0 Nitrogen N 3.2 1.1 Calcium Ca 1.5 0.22 Phosphorus P 1.0 0.22 Potassium K 0.4 0.03 Sulfur S 0.3 0.038 Sodium Na 0.2 0.037 Chlorine Cl 0.2 0.024 Magnesium Mg 0.1 0.015 Trace ...
The model may show the anatomy partially dissected, or have removable parts allowing the student to remove and inspect the modelled body parts.Some models may have changeable genital inserts and other interchangeable parts which permit a unisex model to represent an individual of either sex.