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Incisive Teeth

The four front cutting teeth of each jaw.

Inferior Palpebral Sulcus

The furrow of the inferior border of the inferior eyelid.

Interciliary Sulci

The vertical or transverse furrows between the eyebrows.

Intertragic Notch

Notch between the tragus and antitragus of the ear.

Labial Sulci

The vertical furrows of the lip extending from within the mucous membranes into the integumentary lips.

Labiomental Sulcus

The junction of the inferior lip and the chin, which may appear as a furrow.

Levator Anguli Oris

Elevates the angle of the mouth.

Levator Labii Superioris Alaeque Nasi Muscle

Elevates the superior lip, dilates the nostrils.

Levator Labii Superioris Muscle

Elevates and extends the superior lip.

Levator Palpebrae Superioris Muscle

Raises the superior eyelid.

Linear Sulci

Eyelid furrows which are short and broken, which run horizontally on the palpebrae themselves and may fan from both the medial and lateral corners of the eyes.


Inferior fatty 1/3 of the ear.

Mandibular Sulcus

The furrow beneath of jawline which rises vertically on the cheek.

Masseter Muscle

Closes the mandible; mastication.

Medial Lobe

Tiny prominence on the midline of the superior mucous membrane.

Mentalis Muscle

Elevates and protrudes the inferior lip, wrinkles the skin over the chin.

Mucous Membranes

The visible red surfaces of the lips; the lining membrane of body cavities which communicate with the exterior.

Nasal Sulcus

The angular area between the posterior margin of the wing of the nose and the nasolabial fold.

Nasolabial Fold

The eminence of the cheek and adjacent to the mouth; extending from the superior part of the posterior margin of the wing of the nose to the side of the mouth.

Nasolabial Sulcus

The furrow originating at the superior border of the wing of the nose and extending to the side of the mouth.

Naso-Orbital Fossa

Depression superior to the medial portion of the superior palpebrae.

Natural Facial Markings

Those that are present from birth; hereditary.

Oblique Palpebral Sulcus

The shallow, curving groove below the medial corner of the eyelids.

Occipitofrontalis Muscle

Epicranius; draws the scalp posteriorly and anteriorly and raises the eyebrows.

Optic Facial Sulci

Crow's feet; the furrows radiating from the lateral corner of the eye.

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