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Appendicular Skeleton. Bones of pectoral girdle & pelvic girdle Bones of the upper & lower limbs Differences between male & female pelvises. Pelvic girdle – where arms attach to axial skeleton. Figure 5.10. Features of pectoral girdle. Clavicles articulate medially with manubrium
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Appendicular Skeleton Bones of pectoral girdle & pelvic girdle Bones of the upper & lower limbs Differences between male & female pelvises
Features of pectoral girdle • Clavicles articulate medially with manubrium • Acromium process articulates with clavicle • Glenoid cavity articulates with humerus • Coracoid process = attachment for arm & chest muscles
Pelvic Girdle – where the legs attach to axial skeleton • oscoxae of pelvic girdle formed by fusion of the • ilium, • ischium, and • pubis. • The pelvic girdle consists of two ossacoxae (ossa, bone + coxa, hip;singular). • At birth, these bones are separated by hyaline cartilage & fusion is usually complete by age 25 • Acetabulum is where the 3 bones meet femur
Sex differences • Female iliac bones more flared • Female ishial spines shorter • Female inlet larger, more circular • Female sacrum less curved • Female pubic arch is rounder • Female pelvis is shallower and lighter
