Skeletal System Gross Anatomy II Lecture 7 Skeletal System Gross Anatomy II

Appendicular Skeleton Girdles Pectoral or shoulder Pelvic Upper Limbs Arm (brachial) Forearm (antebrachial) Wrist (carpal) Hand (manus) Lower Limbs Thigh (femoral) Leg (crural) Foot (pes) Fig. 8.1

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) Fig. 8.3 Fig. 8.2

Arm Humerus Head Tubercles Intertubercular groove Capitulum Trochlea Greater and lesser Intertubercular groove Capitulum Articulates with radius Trochlea Articulates with ulna Epicondyles Attachment of forearm muscles Fig. 8.4

Forearm Radius Ulna Thumb side Radial tuberosity (biceps brachii muscle) Ulna Little finger side Trochlear notch Olecranon process Radial notch Fig. 8.5

Wrist and Hand Wrist 8 carpals Fig. 8.6

Pelvis Os Coxae: Right and Left Acetabulum Obturator foramen Sacrum Ilium Ischium Sit down bone Pubis Symphysis pubis Acetabulum Obturator foramen Sacrum Fig. 8.7

Os Coxae Fig. 8.9

Thigh Femur Patella or kneecap Head Neck Trochanters Condyles Greater and lesser Condyles Medial and lateral Epicondyles Patella or kneecap Fig. 8.11 Fig. 8.12

Leg Tibia Fibula Larger and supports most of weight Tibial tuberosity Medial malleolus Fibula Articulates with tibia not femur Lateral malleolus Fig. 8.13

Foot Tarsals (7) Talus (ankle bone) Calcaneus (heel) Fig. 8.14

Points to Remember Appendicular skeleton includes bones of upper and lower limbs and pectoral and pelvic girdles Pectoral girdle and upper limb held in place largely by muscles Pelvic girdle has strong articulation with sacrum to help support weight of body

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