اناٹومی مطالعاتی نوٹ · Thorax

Sternum

The flat breastbone in the midline of the front of the chest. It has three parts: the manubrium, the body and the xiphoid process.

اہم نکات

Manubrium (T3–4) + body + xiphoid (xiphisternal joint at T9).
Sternal angle = 2nd costal cartilage, T4/5 disc, superior/inferior mediastinum boundary.
Red marrow for life → sternal puncture.
Costal cartilage 1: cartilaginous joint; cartilages 2–7: synovial joints.
Develops from 6 parts; middle 4 sternebrae fuse into the body.
Sternum: fusion of two sternal bars, cranial to caudal.
Bone: type I collagen + hydroxyapatite.
Osteoblast builds, osteocyte maintains, osteoclast resorbs.

خصوصیات · Articulations · Histology · Development · طبی اہمیت

مفت سائن اِن کریں تاکہ اسے 3D ماڈل پر دیکھیں، مکمل نوٹ پڑھیں اور اس پر سوالات کی مشق کریں۔