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Appendicular Skeleton. Ch. 8. Consists of:. Shoulder (pectoral) Girdle Upper extremities Pelvic Girdle Lower extremities. Shoulder (pectoral) girdle. Sternum + clavicle = sternoclavicular joint Clavicle + scapula = acromioclavicular joint Scapula held in place by muscles only - PowerPoint PPT Presentation
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Appendicular Skeleton
Ch. 8
Consists of:
• Shoulder (pectoral) Girdle• Upper extremities• Pelvic Girdle• Lower extremities
Shoulder (pectoral) girdle
• Sternum + clavicle = sternoclavicular joint• Clavicle + scapula = acromioclavicular joint• Scapula held in place by muscles only• Upper limb attached to girdle at shoulder
• Clavicle – s-shaped bone– Attaches sternum to shoulder (bridge between the
2 joints)
Shoulder Girdle – posterior scapula
• Acromion process
• Glenoid cavity
• Spine• Coracoid
process
Shoulder Girdle – anterior scapula
Upper Extremities
• 30 bones each• Consists of:– Humerus– Radius– Ulna– Carpal bones in wrist– Metacarpals in hand
• 1-5 starts with thumb– Phalanges in fingers
• 1-5 starts with thumb
Humerus
• Head• Greater tubercle• Lesser tubercle• Deltoid tuberosity• Lateral epicondyle• Medial epicondyle• Capitulum• Trochlea
Radius and Ulna
• Radius– Head– Styloid process – Radial tuberosity
• Ulna– Styloid process
Wrist and Hand
• Carpals• Metacarpals• phalanges
Carpals
Metacarpals and Phalanges
Pelvic Girdle• Made of 2 bones• Join with the lower
extremities• Differences between male
and female pelvis– Male
• Larger and heavier• Larger muscle attachments
– Female• Larger pelvic spaces• Pubic arch greater than 90
degrees
Lower Extremities
• 30 bones each• Consists of:– Femur– Patella– Fibula
• Lateral and smaller– Tibia
• Bigger and medial– Tarsals in ankle– Metatarsals in foot (1-5)– Phalanges in toes (1-5)
Femur and Patella
• Head• Greater
trochanter• Lesser
trochanter• Lateral
epicondyle• Medial
epicondyle
Tibia and Fibula
• Tibia– Medial and larger– Tibial tuberosity– Lateral condyle– Medial condyle– Medial malleolus
• Fibula– Lateral and smaller– Head– Lateral mealleolus
Tarsals – Metatarsals - Phalanges
• Calcaneus• Talus• Cuboid• Navicular• Cuneiforms