Body of hyoid bone

Body of hyoid bone
Hyoid bone. Anterior surface. Enlarged.
Details
Identifiers
Latin	Corpus ossis hyoidei
TA	A02.1.16.002
FMA	59495
*Anatomical terms of bone* [edit on Wikidata]

The body of hyoid bone or central part of hyoid bone is of a quadrilateral form.

Its anterior surface is convex and directed forward and upward.
- It is crossed in its upper half by a well-marked transverse ridge with a slight downward convexity, and in many cases a vertical median ridge divides it into two lateral halves.
- The portion of the vertical ridge above the transverse line is present in a majority of specimens, but the lower portion is evident only in rare cases.
- The anterior surface gives insertion to the geniohyoid muscle in the greater part of its extent both above and below the transverse ridge; a portion of the origin of the hyoglossus notches the lateral margin of the geniohyoid attachment.
- Below the transverse ridge the mylohyoid, sternohyoid, and omohyoid are inserted.
The posterior surface is smooth, concave, directed backward and downward, and separated from the epiglottis by the hyothyroid membrane and a quantity of loose areolar tissue; a bursa intervenes between it and the hyothyroid membrane.
The superior border is rounded, and gives attachment to the hyothyroid membrane and some aponeurotic fibers of the genioglossus.
The inferior border affords insertion medially to the sternohyoid and laterally to the omohyoid and occasionally a portion of the thyrohyoid. It also gives attachment to the Levator glandulae thyreoideae, when this muscle is present.
In early life the lateral borders are connected to the greater cornua by synchondroses; after middle life usually by bony union.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

Anatomy diagram: 25420.000-1 at Roche Lexicon - illustrated navigator, Elsevier
lesson11 at The Anatomy Lesson by Wesley Norman (Georgetown University) (larynxskel1)

Neurocranium	occipital parietal frontal temporal sphenoid ethmoid

Face	nasal maxilla lacrimal zygomatic palatine inferior nasal conchae vomer mandible hyoid

Ear	ossicles malleus incus stapes

Shoulder	clavicle scapula

Arm	humerus ulna radius

Hand	carpals (scaphoid, lunate bone, triquetral, pisiform, trapezium, trapezoid, capitate, hamate) metacarpals phalanges (prox, int, dist)

Pelvis	ilium ischium pubis

Leg	femur patella fibula tibia

Foot	tarsals heelbone anklebone navicular cuneiform cuboid metatarsals phalanges proximal intermediate distal

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