The Appendicular Skeleton 126 bones of the limbs

The Appendicular Skeleton: 126 bones of the limbs (appendages) 2 parts: • Shoulder girdle • Pelvic girdle

Postcranial Skeleton: Appendicular Skeleton Upper limbs: Shoulder girdle, long bones, hand bones Lower limbs: Pelvic girdle, long bones, patella, foot bones

Upper Limb

Appendicular Skeleton The Upper Limb Clavicle Shoulder girdle Composed of 2 bones: clavicle & scapula Clavicle Scapula- Features: spine, glenoid cavity, acromion, coracoid process, Scapula

The Shoulder Girdle

The Shoulder Girdle: Clavicle

The Shoulder Girdle: Scapula

Appendicular Skeleton The Upper Limb Long bones Humerus- Features: head, trochlea, olecranon fossa Radius- Features: head, styloid process, ulnar notch Ulna- Features: head, olecranon process, styloid process, radial notch

Humerus

The Shoulder Girdle: Humerus

Radius and Ulna

Radius

Bones of the Hand 27 Bones in each hand 5 4 5 5 8

SLTPTTCH

S caphoid L unate T riquetrum P isiform T rapezium T rapezoid C apitate Hamate

Lower Limb

THE PELVIC GIRDLE

THE PELVIC GIRDLE • Made up of 3 Adult Bones: • Left and right innominate • also known as os coxae • Sacrum

INNOMINATE • Latin for “no name” bone • Paired bones

INNOMINATE • Meet at joints: • Pubic symphysis – where the two innominate come together anteriorly • Sacroiliac joints – where each innominate comes together with the sacrum

INNOMINATE • Made up of three different bones in childhood: • Ischium • Ilium • Pubis

INOMINATE FEATURES

INOMINATE FEATURES ILIUM Acetabulum Greater Sciatic Notch PUBIS ISCHIUM Obturator foramen Pubic symphysis

Femur

Patella Apex Anterior Posterior

Tibia and Fibula

Tibia

Fibula Proximal Distal D

The Lower Limb Foot Bones Tarsals (7) – ankle bones Talus Calcaneous Tarsals Metatarsals Phalanges Navicular Cuboid Cuneiforms (3) Metatarsals (5) – bones of foot Phalanges (14 = 3 for each toe, 2 for big toe) – toe bones

Bones of the Foot