Appendicular Skeleton. 126 bones – suspended by girdles from axial skeleton...

download Appendicular Skeleton. 126 bones – suspended by girdles from axial skeleton Designed for movement Pectoral girdle – 4 bones Upper extremity -Arm – 1 bone

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    18-Dec-2015
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Transcript of Appendicular Skeleton. 126 bones – suspended by girdles from axial skeleton...

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  • Appendicular Skeleton
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  • 126 bones suspended by girdles from axial skeleton Designed for movement Pectoral girdle 4 bones Upper extremity -Arm 1 bone - forearm 2 bones - hand = wrist, palm & fingers 27 bones [each]
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  • Pelvic Girdle 2 bones Lower Extremity leg 1 bone - lower leg 2 bones - foot = ankle, instep & toes 26 bones [each ] - Patella 2 bones *Pelvic or Hip Girdle: Attaches the lower extremity to the axial skeleton Provides support for body weight
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  • Hip / Coxal bones [ ossa coxae, innominate bones] Ilium ASIS, PSIS Ischium - tuberosity Pubis - rami Symphysis pubis Obturator foramen Acetabulum
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  • Lower Extremity Leg [thigh] femur Head Fovea capitis Neck Trochanters greater/lesser Condyles medial/lateral Epicondyles
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  • Lower Extremity *Leg region between knee and ankle Fibula lateral bone Tibia medial bone Malleolus Condyles medial/lateral Tibial tuberosity
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  • Patella [kneecap] a flat, triangular sesamoid bone Enclosed within the quadriceps tendon
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  • Ankle or Tarsus Contains 7 tarsal bones Calcaneous = heel bone Talus Cuboid Navicular Cuneiforms lateral, intermediate & medial
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  • Foot Metatarsals not named, but numbered 1 5 starting at medial side Toes phalanges or digits: 3 bones [proximal, distal & middle] for each toe, except big [great] toe which has 2 [no middle phalanx]
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  • Pectoral or Shoulder Girdle Clavicle [collarbone] S shaped bone * most frequently fxd bone of body Scapula [shoulder blade] thin, flat, triangular bone. Acromion Spine Coracoid process Gleniod fossa/cavity
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  • Upper Extremity Arm [brachium] humerus Head Tubercles greater/lesser Epicondlyes medial/lateral Olecranon fossa Capitulum Trochlea
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  • Upper Extremity *forearm region between elbow and wrist Ulna Olecranon process Radius head Styloid process
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  • Wrist or Carpus Contains 8 carpal bones Bound tightly by ligaments Arranged in 2 rows Scaphoid Trapezium Lunate Trapezoid Triquetral Capitate Pisiform Hamate
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  • Hand Metarcarpals not named, but numbered 1-5 starting on lateral [thumb] side Fingers phalanges or digits: 3 bones [proximal, distal & middle] for each finger, except thumb, which has 2 [ no middle phalanx]