Hooper, Robert [Editor]: The Anatomist's Vade-Mecum: Containing The Anatomy, Physiology, Morbid Appearances, &c. Of The Human Body ; The Art of making Anatomical Preparations, &c. To which are added Anatomical, Physiological, Medical, And Surgical Examinations For Students (London, 1811)

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blan«e, tlie xyphoid, or ensiform cartilage. It is situated at
the pit of the stomach.

Cavities. The jugular sinus, at the superior and inner
part. Two clavicular sinuses, for the attachment of the cla-
vicles. Seven costal depressions, to which the ribs adhere.

Connexion. The sternum is connected by arthrodia with
the clavicle, and with the seven true ribs by synchondrosis.

Use. To assist in forming the thorax, to give adhesion to
the mediastinum, and various muscles, and to serve as a ful-
crum for the clavicles to roll on.

The. sternum, at birth, consists of cartilage shaped like
the adult sternum, with two, three, or four rousd ossi-
fications in its centre.

When an abscess forms in the anterior space of the me-
diastinum, a portion of bone is removed, by a trephine,
from the sternum, to give an exit to the collected fluid.

LOINS.

The bones of the loins are five lumbar vertebra', which have
already been described.

PELVIS

Hie pelvis, so named from its resemblance to a basos for-
merly used by barbers, forms, as it were, the basis of the
trunk of the skeleton. It consists of four bones: two ossa
innominata, the os sacrum, and the os coccygis, which are si-
tuated at the bottom of the trunk, asid above the lower ex-
tremities. It is within the casity formed by these bones that
the internal organ* of generation, the urinary bladder, the
rectum, aud occasionally part of tiie small intestine* are si-
tuated. The pelvis also serves as a firm support to the upper
part of the body, and unites the bones *f the trunk witk
tbe'M of the lower extremity.

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