Définitions et usages de : forehead - Dictionnaire de anglais sensagent

Définition

forehead (n.)

1.the large cranial bone forming the front part of the cranium: includes the upper part of the orbits

2.the part of the face above the eyes

Forehead (n.)

1.(MeSH)The part of the face above the eyes.

Publicité ▼

Merriam Webster

ForeheadFore"head (?; 277), n.
1. The front of that part of the head which incloses the brain; that part of the face above the eyes; the brow.

2. The aspect or countenance; assurance.

To look with forehead bold and big enough
Upon the power and puissance of the king. Shak.

3. The front or fore part of anything.

Flames in the forehead of the morning sky. Milton.

So rich advantage of a promised glory
As smiles upon the forehead of this action. Shak.

Publicité ▼

Dictionnaire analogique

Wikipedia

Forehead

Forehead

Latin	sinciput
System	Unknown, none
Artery	supraorbital, supratrochlear
Vein	supraorbital, frontal
Nerve	trigeminal, facial
MeSH	Forehead

In human anatomy, the forehead is the fore part of the head. It is, formally, an area of the head bounded by three features, two of the skull and one of the scalp. The top of the forehead is marked by the hairline, the edge of the area where hair on the scalp grows. The bottom of the forehead is marked by the supraorbital ridge, the bone feature of the skull above the eyes. The two sides of the forehead are marked by the temporal ridge, a bone feature that links the supraorbital ridge to the coronal suture line and beyond.^[1]^[2]

1 Anatomy
2 Physiognomy
3 Expressions
4 Wrinkles
5 See also
6 References
7 External links

Anatomy

The forehead comprises, and the musculature and skin of the forehead lies above, the portion of the frontal bone of the skull that is known as the squama frontalis, the plate-like portion of the frontal bone.^[3]^[4]

The sensory nerves of the forehead connect to the ophthalmic branch of the trigeminal nerve and the cervical plexus, and lie within the subcutaneous fat. The motor nerves of the forehead connect to the facial nerve.^[2]

The musculature of the forehead comprises the Occipitofrontalis, Procerus, and Corrugator supercilii muscles, all of which are controlled by the temporal branch of the facial nerve.^[2]

Blood supply to the forehead is via the left and right superorbital, supertrochealar, and anterior branches of the temporal artery.^[2]

The ophthalmic branch of the trigeminal nerve, the supraorbital nerve, divides at the orbital rim into two parts in the forehead. One part, the superficial division, runs over the surface of the Occipitofrontalis muscle. This provides sensation for the skin of the forehead, and for the front (anterior) edge of the scalp. The other part, the deep division, runs into the Occipitofrontalis muscle and provides frontoparietal sensation.^[1]

Physiognomy

In physiognomy and phrenology, the shape of the forehead was taken to symbolise intellect and intelligence. "Animals, even the most intelligent of them,", wrote Samuel R. Wells in 1942, "can hardly be said to have any forehead at all, and in natural total idiots it is very diminished".^[5]

pseudo-Aristotle, in Physiognomica, stated that the forehead is governed by Mars.^[6] A low and little forehead denoted magnanimity, boldness, and confidence; a fleshy and wrinkle-free forehead, litigiousness, vanity, deceit, and contentiousness; a sharp forehead, weakness and fickleness; a wrinkled forehead, great spirit and wit yet poor fortune; a round forehead, virtue and good understanding; a full large forehead, boldness, malice, boundary issues, and high spirit; and a long high forehead, honesty, weakness, simplicity, and poor fortune.^[6]

Expressions

The muscles of the forehead help to form facial expressions. There are four basic motions, which can occur individually or in combination to form different expressions. The Occipitofrontalis muscles can raise the eyebrows, either together or singly, forming expressions of surprise and quizzicality. The Corrugator supercilii muscles can pull the eyebrows inwards and down, forming a frown. The Procerus muscles can pull down the centre portions of the eyebrows.^[7]

Wrinkles

The movements of the muscles in the forehead produce characteristic wrinkles in the skin. The Occipitofrontalis muscles produce the transverse wrinkles across the width of the forehead, and the Corrugator supercilii muscles produce vertical wrinkles between the eyebrows above the nose. The Procerus muscles cause the nose to wrinkle.^[7]

References

^ ^a ^b David M. Knize and Mel Drisko (2001). The Forehead and Temporal Fossa: Anatomy and Technique. Lippincott Williams & Wilkins. pp. 4. ISBN 0-7817-2074-5.
^ ^a ^b ^c ^d Valencia D. Thomas, Wendy Long Mitchell, Neil A. Swanson, Thomas E. Rohrer, and Ken K. Lee (2007). "Reconstructive surgery of Skin Cancer defects". In Keyvan Nouri. Skin Cancer. McGraw-Hill Professional. pp. 523. ISBN 0-07-147256-8.
^ Diane H. Gronefeld (1998). Radiographic anatomy & positioning: an integrated approach. McGraw-Hill Professional. pp. 321. ISBN 0-8385-8238-9.
^ Elaine Nicpon Marieb and Katja Hoehn (2007). Human anatomy & physiology (7th ed.). Pearson Education. pp. 204. ISBN 0-321-37294-8.
^ Samuel R. Wells (1998). "The Forehead". New Physiognomy Or Signs of Character as Manifested Through Temperament and External Forms and Especially in the Human Face Divine (reprint ed.). Kessinger Publishing. pp. 260. ISBN 0-7661-0357-9.
^ ^a ^b Aristotle (1828). William Salmon. ed. The Works of Aristotle. New England. pp. 71.
^ ^a ^b Nigel Palastanga, Derek Field, and Roger Soames (2006). "Head and Brain". Anatomy and human movement (5th ed.). Elsevier Health Sciences. pp. 645–646. ISBN 0-7506-8814-9.

External links

Media related to Forehead at Wikimedia Commons
Forehead at eMedicine Dictionary

Human regional anatomy (TA A01.1)

Head

Forehead · Ear · Jaw · Face (Cheek, Eye, Nose, Mouth, Chin) · Occiput · Scalp · Temple

Neck

Throat · Adam's apple

Trunk

Chest (Breast) · Abdomen (Navel) · Back · Pelvis (Sex organs)

Limbs

Upper limb	Shoulder · Axilla · Arm Elbow · Forearm Wrist · Hand · Finger (Thumb · Index · Middle · Ring · Little)

Lower limb/ (see also leg)	Hip · Buttocks · Thigh Knee · Calf · Crus Ankle · Heel · Foot · Toe (Hallux · Long • Third • Fourth • Fifth) · Sole

General anatomy: systems and organs, regional anatomy, planes and lines, superficial axial anatomy, superficial anatomy of limbs

Retrieved from "http://en.wikipedia.org/w/index.php?title=Forehead&oldid=498372727"

Categories:

This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)

Donate to Wikimedia

Significations et usages de forehead

Définition

Définition (complément)

Synonymes

Locutions

Dictionnaire analogique

Forehead

Contents

Anatomy

Physiognomy

Expressions

Wrinkles

See also

References

External links

Significations et usages de forehead

Définition signaler un problème

Définition (complément)

Synonymes signaler un problème

Locutions

Dictionnaire analogique

Forehead

Contents

Anatomy

Physiognomy

Expressions

Wrinkles

See also

References

External links

Définition

Synonymes