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The Appendicular Skeleton. p. 153-160. Pectoral Girdle. Two clavicles “Collarbones” Art.w/ manubrium & scapulae Two scapulae “Shoulder blades” Art.w/ clavicles & humerus Glenoid cavity – where art.w/ humerus. Pectoral Girdle. Scapula. Humerus. Upper arm
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The Appendicular Skeleton p. 153-160
Pectoral Girdle • Two clavicles • “Collarbones” • Art.w/ manubrium & scapulae • Two scapulae • “Shoulder blades” • Art.w/ clavicles & humerus • Glenoid cavity – where art.w/ humerus
Humerus • Upper arm • Art.w/ glenoid cavity of scapula, radius, ulna
Lower Arm • Radius • Lateral bone of forearm • Art.w/ humerus, ulna, carpals • Ulna • Medial bone of forearm • Longer than radius • Olecranon process – where art.w/ humerus • Art.w/ humerus, radius, carpals
The Hand • 8 carpals • Wrist • 5 metacarpals • Palm of hand • 14 phalanges • Fingers (#1-5) • 2 in the thumb • 3 in each finger (proximal, middle, distal)
Pelvic Girdle • Two coxae • Each is three fused bones – ilium, ischium, pubis • Art./w sacrum & femur • Acetabulum – where art.w/ femur • Pelvis= sacrum, coccyx, & coxae
Coxal Bone • Ilium • Hip bone • Art.w/ sacrum • Ischium • Sit bones • Pubis • Art.w/ other pubis – pubic symphysis
Male vs. Female Pelvis • Female – • Wider & rounder pelvic cavity • Ilia flare more laterally • Pubic arch wider • Sacrum shorter & less curved • Coccyx more flexible
Femur • Upper leg • Heaviest & strongest bone in body • Art.w/ coxal bone at acetabulum, patella, & tibia
Lower Leg • Patella • Kneecap • Art.w/ femur & tibia • Tibia • “Shin bone” • Medial to fibula, larger • Art.w/ femur, patella, fibula, tarsals • Fibula • Art.w/ tibia, tarsals
The Foot • 7 tarsals • Ankle • 5 metatarsals • Instep • 14 phalanges • Toes (#1-5) • 2 in the big toe • 3 in every other toe (proximal, middle, distal)
Special Tarsals • Talus – superior-most tarsal, art./w tibia & calcaneus • Calcaneus – heel bone