Appendicular Skeleton

Appendicular Skeleton

• Bones of the upper and lower limbs

• Pectoral Girdle– Clavicle– Scapula– Upper limb

• Pelvic Girdle– Pelvic bone– Lower limb

Pectoral girdle

Clavicle

Movement at the pectoral girdle

Upper limb

• Humerus

• Radius

• Ulna

• Carpal bones

• Metacarpal bones

• Phalanges

Bones of the forearm

• Radius

• Ulna

• Trochlear notch of ulna articulates with the trochlea and capitulum of humerus to form the elbow joint

• Distal radius forms the wrist joint with the carpal bones

Carpal Bones

• Scaphoid• Lunate• Triquetrum• Pisiform• Trapezium• Trapezoid• Capitate• Hamate

• Some• Lovers • Try• Positions• That • They• Can’t• Handle

Metacarpals and Phalanges

• Metacarpals numbered I – V starting with the thumb

• Phalanges are named proximal, middle, and distal

• Thumb (pollex) has only proximal and distal phalanges

Pelvic Girdle

• Hip bone

• Femur

• Tibia

• Fibula

• Tarsal

• Metatarsals

• Phalanges

Os Coxae (Hip bone)

• Formed from three fused bones

• Ilium

• Ischium

• Pubis

• Large center depression in the bone for articulation with the femur is the acetabulum

Pelvic openings

Greater (false) pelvis and True pelvis

Femur

• Longest and heaviest bone in the body

• Articulates proximally to form the hip joint and distally with the tibia to form the knee joint

Tibia and Fibula

Tarsus(Ankle)

• Seven bones of the ankle

• Talus

• Calcaneus

• Cuboid

• Navicular

• Medial, intermediate, lateral Cuneiform

Foot

• Five metatarsal bones

• Numbered I –V starting with the great toe (hallux)

• 14 phalanges with similar naming to the bones of the fingers