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Parasternal line: A vertical line equidistant from the sternal and mid-clavicular lines. Mid-clavicular line: A vertical line passing through the midpoint of the clavicle. Mammillary line; Anterior axillary line: A vertical line on the anterior torso marked by the anterior axillary fold. Midaxillary line: A vertical line passing through the ...
In astronomy, geography, and related sciences and contexts, a direction or plane passing by a given point is said to be vertical if it contains the local gravity direction at that point. [ 1 ] Conversely, a direction or plane is said to be horizontal (or leveled ) if it is perpendicular to the vertical direction.
The lines from pole to pole are lines of constant longitude, or meridians. The circles parallel to the Equator are circles of constant latitude, or parallels. The graticule shows the latitude and longitude of points on the surface. In this example, meridians are spaced at 6° intervals and parallels at 4° intervals.
Also datum level or datum line. The zero-elevation baseline or vertical datum to which a measurement of elevation or altitude is relative, e.g. the mean sea level calculated for a given location over a given period of time. [4] See also geodetic datum. de facto segregation The spatial and social separation of populations that occurs without ...
Axillary lines. In humans, reference may take origin from superficial anatomy, made to anatomical landmarks that are on the skin or visible underneath. As with planes, lines and points are imaginary. Examples include: The midaxillary line, a line running vertically down the surface of the body passing through the apex of the axilla (armpit).
This is the definition assumed when the word latitude is used without qualification. The definition must be accompanied with a specification of the ellipsoid. Geocentric latitude (also known as spherical latitude, after the 3D polar angle): the angle between the radius (from centre to the point on the surface) and the equatorial plane. (Figure ...
Standard anatomical terms of location are used to describe unambiguously the anatomy of animals, including humans. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on.
The vertical; or midclavicular lines, are drawn as if dropped from the midpoint of each clavicle. The superior horizontal line is the subcostal line, drawn immediately inferior to the ribs. [1] The inferior horizontal line is called the intertubercular line, and is to cross the iliac tubercles, found at the superior aspect of the pelvis.