plane (plān)
Frankfort horizontal plane,
1. a flat surface determined by the position of three points in space.
2. a specified level, as the plane of anesthesia.
3. to rub away or abrade; see planing.
4. a superficial incision in the wall of a cavity or between tissue layers, especially in plastic surgery, made so that the precise point of entry into the cavity or between the layers can be determined. 
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Planes of the body, with subject in the anatomical position.
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Planes of the trunk.
axial plane one parallel with the long axis of a structure.
base plane an imaginary plane upon which is estimated the retention of an artificial denture.
coronal planes frontal p's.
Frankfort horizontal plane a horizontal plane represented in profile by a line between the lowest point on the margin of the orbit and the highest point on the margin of the auditory meatus.
frontal planes those passing longitudinally through the body from side to side, at right angles to the median plane, dividing the body into front and back parts.
horizontal plane
1. one passing through the body, at right angles to both the frontal and median planes, dividing the body into upper and lower parts.
2. one passing through a tooth at right angles to its long axis.
median plane one passing longitudinally through the middle of the body from front to back, dividing it into right and left halves.
nuchal plane the outer surface of the occipital bone between the foramen magnum and the superior nuchal line.
occipital plane the outer surface of the occipital bone above the superior nuchal line.
orbital plane
1. the orbital surface of the maxilla.
2. visual p.
sagittal planes vertical planes passing through the body parallel to the median plane (or to the sagittal suture), dividing the body into left and right portions.
temporal plane the depressed area on the side of the skull below the inferior temporal line.
transverse plane one passing horizontally through the body, at right angles to the sagittal and frontal planes, and dividing the body into upper and lower portions.
vertical plane one perpendicular to a horizontal plane, dividing the body into left and right, or front and back portions.
visual plane one passing through the visual axes of the two eyes.
Frank·fort horizontal plane (fr nk f rt)n. See Frankfort plane. |
Frankfort horizontal plane,
n.pr See plane, Frankfort horizontal.
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