Appendicular Skeleton

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Presentation transcript:

Appendicular Skeleton Ch. 8

Consists of: Shoulder (pectoral) Girdle Upper extremities Pelvic Girdle Lower extremities

Shoulder Girdle Sternum + clavicle = sternoclavicular joint Clavicle + scapula = acromioclavicular joint Scapula held in place by muscle only Upper limb attached to girdle at shoulder

Shoulder Girdle - Clavicle S-shaped bone

Shoulder Girdle – posterior scapula Acromion process Glenoid cavity Spine Coracoid process

Shoulder Girdle – anterior scapula

Upper Extremities 30 bones each Humerus, radius, ulna Carpal bones in wrist Metacarpals in palm Phalanges in fingers

Humerus Head Greater tubercle Lesser tubercle Deltoid tuberosity Lateral epicondyle Medial epicondyle Capitulum Trochlea

Radius and Ulna Radius Head Styloid process Radial tuberosity Ulna

Wrist and Hand Carpals Metacarpals phalanges

Carpals

Metacarpals and Phalanges

Pelvic Girdle

Pelvic Girdle Ilicac crest Anterior/superior iliac spine Acetabulum Spine of ischium Obturator formaen Pubic symphysis

Female and Male Skeletons larger and heavier larger articular surfaces larger muscle attachments Female pelvis wider & shallower larger pelvic inlet & outlet more space in true pelvis pubic arch >90 degrees Tortora & Grabowski 9/e 2000 JWS

Lower Extremities 30 bones each Femur Patella Tibia Fibula Tarsals Metatarsals phalanges

Femur and Patella Head Greater trochanter Lesser trochanter Lateral epicondyle Medial epicondyle

Tibia and Fibula Tibia Fibula Medial and larger Tibial tuberosity Lateral condyle Medial condyle Medial malleolus Fibula Lateral and smaller Head Lateral mealleolus

Tarsals – Metatarsals - Phalanges Calcaneus Talus Cuboid Navicular Cuneiforms