FAQ: In Anatomy, What Is The Frankfurt Horizontal?

What is Frankfurt horizontal?

A horizontal plane extending through the lateral facial profile with the head in a normal relaxed position. If an imaginary line were drawn from the ear canal to the area just under the eye (infraorbital rim), this should be parallel to the ground.

What is frankfurts line?

Frankfort horizontal line, Reid’s base line Reconstructive surgery An imaginary line that projects from the median line of the occipital bone and upper rim of the external auditory canal–the auricular point, to the lower rim of the orbit–the infraorbital point; the FHL divides the head into upper and lower halves from

What is the correct position of the Frankfort plane?

In humans, the anatomical position of the skull has been agreed by international convention to be the Frankfurt plane or Frankfort plane, a position in which the lower margins of the orbits, the orbitales, and the upper margins of the ear canals, the poria, all lie in the same horizontal plane.

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What is the Frankfurt plane used for?

: a plane used in craniometry that is determined the highest point on the upper margin of the opening of each external auditory canal and the low point on the lower margin of the left orbit and that is used to orient a human skull or head usually so that the plane is horizontal.

What is true horizontal plane?

The true horizontal (physiological) is the perpendicular line to the true vertical16. Frankfort plane (FHP) It is the line created by the opening of the externalauditory meatus (Porion) and the low point on the lower margin of the infraorbital rim.

What is Reids base line?

It is defined as a line drawn from the inferior margin of the orbit (Orbitale point) to the auricular point (center of the orifice of the external acoustic meatus, Auriculare point) and extending backward to the center of the occipital bone. Reid’s base line is used as the zero plane in computed tomography.

What is the Frankfurt plane and what is its significance?

The Frankfurt plane became the principal standard of skull measurement because it also identifies the normal plane in which the head is positioned parallel to the ground. Because the Frankfurt plane serves as a benchmark for making skull measurements, it is also called a craniometric plane.

What is Reid’s baseline?

(rēd), a line drawn from the inferior margin of the orbit to the auricular point (center of the orifice of the external acoustic meatus) and extending backward to the center of the occipital bone. Used as the zero plane in computed tomography.

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Is when the entire maxilla and mandible can be seen on one panoramic image?

What is a focal trough? Advantages: Field size: The entire maxilla and mandible can be seen on one panoramic film.

What is focal trough?

The focal trough is the area in which structures will appear most sharply and clearly. Structures, which fall in front of or behind, the focal trough, can be distorted, magnified or reduced. The size and shape of the focal trough varies between manufacturers.

What happens when a patient’s chin is too high during the panoramic exposure?

When a patient’s chin is too high, the maxillary anterior teeth appear blurry and elongated, the condyles may or may not appear on the image, and the occlusal plane appears flat or reversed (Figure 11).

What are the four body positions?

The four main anatomical positions are: supine, prone, right lateral recumbent, and left lateral recumbent.

What is the classic anatomical position?

In standard anatomical position, the human body is standing erect and at rest. Therefore, the body has its feet together (or slightly separated), and its arms are rotated outward so that the palms are forward, and the thumbs are pointed away from the body (forearms supine).

How many anatomical positions are there?

There are three main planes that transect, or divide, the human body into sections to make it easier to describe the locations of body parts and movements. They are the sagittal plane, the coronal plane, and the transverse plane.

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