Sternal Definition Anatomy

Sternum definition and function. The adult length of the sternum measures 15 17 cm.

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Sternal definition anatomy. It is larger in males than in females. It is endochondral in origin. The sternum commonly known as the breastbone is a long narrow flat bone that serves as the keystone of the rib cage and stabilizes the thoracic skeleton.

In clinical applications the sternal angle can be palpated at the t4 vertebral level. It is not found in fish. 10 it probably first evolved in early tetrapods as an extension of the pectoral girdle.

Inside of it is a cancellous or spongy tissue that is entirely vascular. Sternal incision cordate deeper than in all other species of the genus nearly half as long as the shell. The sternum is chosen because of its accessibility and because it is a thin flat bone.

Several muscles that move the arms head and neck have their origins on the sternum. Sternum definition a bone or series of bones extending along the middle line of the ventral portion of the body of most vertebrates consisting in humans of a flat narrow bone connected with the clavicles and the true ribs. The procedure must be done under surgical asepsis.

The sternal angle which varies around 162 degrees in males marks the approximate level of the 2nd pair of costal cartilages which attach to the second ribs and the level of the intervertebral disc between t4 and t5. The sternum in vertebrate anatomy is a flat bone that lies in the middle front part of the rib cage. Sternal puncture insertion of a hollow needle into the manubrium of the sternum to obtain a sample of bone marrow.

The sternum or breastbone is a vertical flat bone lying at the anterior middle part of the chest. Externally it is made up of compact bone.

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