The appendicular Skeleton Chapter 8 The Skeletal System: The appendicular Skeleton

Appendicular Skeleton Girdles Pectoral or shoulder Pelvic Upper Limbs Arm Forearm Wrist Hand Lower Limbs Thigh Leg Foot

Pectoral Girdle Scapula (2) Clavicle (2) Acromion process Forms protective cover Attachment for clavicle Attachment for muscles Coracoid process Glenoid cavity Articulates with humerus Clavicle (2)

Arm Humerus Head Neck Tubercles Intertubercular groove Anatomic and surgical Neck Tubercles Greater and lesser Intertubercular groove Deltoid tuberosity Capitulum Articulates with radius Trochlea Articulates with ulna Epicondyles

Forearm Radius Ulna Thumb side Most commonly fractured bone in 50+ years people Ulna Little finger side Trochlear notch Olecranon process Coronoid process

Wrist and Hand Wrist Hand 8 carpal bones 5 metacarpals (palm of hand) Phalanges

Pelvis Coxae: Right and Left Acetabulum Obturator foramen Sacrum Ilium Ischium Sit down bone Pubis Pubic symphysis Acetabulum Obturator foramen Sacrum

Male and Female Pelvis

Thigh Femur Patella or kneecap Head Neck Trochanters Condyles Greater and lesser Condyles Medial and lateral Epicondyles Patella or kneecap

Leg Tibia Fibula Larger and supports most of weight Tibial tuberosity Condyles Medial malleolus Fibula Articulates with tibia not femur Lateral malleolus

Foot Tarsals (7) Metatarsals (5) Phalanges

Arches of the Foot Function Three major arches Distribute weight of body between heel and ball of foot Three major arches Transverse arch Longitudinal arches: Medial and lateral