Pubis (bone)

Bone: Pubic of pelvis
Pelvic girdle
Male pelvis.
Latin	os pubis
Gray's	subject #57 236
MeSH	Pubic+Bone

For the bone in many mammals often called the penis bone, see baculum

In vertebrates, the pubic bone is the ventral and anterior of the three principal bones composing either half of the pelvis.

It is covered by a layer of fat, which is covered by the mons pubis.

It is divisible into a body, a superior ramus and an inferior ramus.

The body forms one-fifth of the acetabulum, contributing by its external surface both to the lunate surface and the acetabular fossa. Its internal surface enters into the formation of the wall of the lesser pelvis and gives origin to a portion of the obturator internus.

In the female, the pubic bone is anterior to the urethral sponge.

The left and right hip bones join at the pubic symphysis.

The pubis is the lower limit of the suprapubic region.

In dinosaurs

The clade Dinosauria is divided into the Saurischia and Ornithischia based on hip structure, including importantly that of the pubis.^[1]

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  Ornithischian pelvic structure (left side)

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  Saurischian pelvic structure (left side).

Additional images

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  Male reproductive system.

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  Right hip bone. External surface.

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  Right hip bone. Internal surface.

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  Plan of ossification of the hip bone.

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  Symphysis pubis exposed by a coronal section.

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  Left Levator ani from within.

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  The Obturator externus.

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  Left hip-joint, opened by removing the floor of the acetabulum from within the pelvis.

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  The arteries of the male pelvis.

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  Pelvis

References

1. ^ Seeley, H.G. (1888). "On the classification of the fossil animals commonly named Dinosauria." Proceedings of the Royal Society of London, 43: 165-171.

External links

• SUNY Labs 44:st-0713 - "The Male Pelvis: Hip Bone"

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.