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The philtrum (Latin: philtrum from Ancient Greek φίλτρον phíltron, lit. "love charm" [2]) or medial cleft is a vertical indentation in the middle area of the upper lip, common to therian mammals, extending in humans from the nasal septum to the tubercle of the upper lip.
Though not every patient has all features, commonly found signs include macrocephaly, congenital macrosomia, extensive cutaneous capillary malformation (naevus flammeus or port-wine stain type birthmark over much of the body; a capillary malformation of the upper lip or philtrum is seen in many patients with this condition), body asymmetry ...
They separate the cheeks from the upper lip. The term derives from Latin nasus for "nose" and labium for "lip". Other people suggest the term melolabial fold, [clarification needed] [4] or the lip-cheek fold or groove. [5] It is also known as the nasolabial sulcus.
Long face syndrome, also referred to as skeletal open bite, [1] is a relatively common condition characterised by excessive vertical facial development. [2] Its causes may be either genetic or environmental. Long face syndrome is "a common dentofacial abnormality." [3]: 369 [4] Its diagnosis, symptomology and treatments are complex and ...
The rhinarium, upper lip, and gums are tightly connected by a fold of mucous membrane called the philtrum, which runs from the tip of the nose to the mouth. [106] The upper lip is constrained by this connection and has fewer nerves to control movement, which leaves it less mobile than the upper lips of simians.
The total area of a histogram used for probability density is always normalized to 1. If the length of the intervals on the x-axis are all 1, then a histogram is identical to a relative frequency plot. Histograms are sometimes confused with bar charts. In a histogram, each bin is for a different range of values, so altogether the histogram ...
The intermediate portion or infraorbital head arises from the lower margin of the orbit immediately above the infraorbital foramen, some of its fibers being attached to the maxilla, others to the zygomatic bone. Its fibers converge, to be inserted into the muscular substance of the upper lip between the angular head and the levator anguli oris.
Temporal has a similar meaning to lateral but is restricted to the head. The terms "left" and "right" are sometimes used, or their Latin alternatives (Latin: dexter, lit. 'right'; Latin: sinister, lit. 'left'). However, it is preferred to use more precise terms where possible. Terms derived from lateral include: