Appendicular Skeleton
Upper
Appendicular
Skeleton Bone
Lower
Appendicular
Skeleton Bone
Clavicle
Ischium/Pubis
Scapula
Ilium
Humerus
Femur
Radius
Tibia
Ulna
Fibula
Carpals
Tarsals
Metacarpals
Metatarsals
Phalanges
Phalanges
Similarities
Differences
Pectoral Girdle
• Clavicle – collarbone
– Anterior attachment (?)
– Posterior attachment (?)
• Scapula – shoulder blades
– Posterior attachment (?)
– Spine – divides posterior surface into 2 sections
– Coracoid process (“Corac” = ?) – curves to clavicle
– Acromion process – forms tip of shoulder
– Glenoid cavity (or fossa) – depression that
articulates with head of humerus
Label Diagrams
Upper Limb
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•
•
•
•
•
Humerus
Radius
Ulna
Carpals
Metacarpals
Phalanges
Humerus
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•
•
•
Head fits into glenoid cavity of scapula
Greater tubercle – lateral process
Lesser tubercle – more anterior process
Intertubercular groove – narrow furrow “between
tubercles”
• Deltoid tuberosity – v-shaped, rough area where
_________ muscles attach to humerus
• Olecranon fossa – posterior depression that
receives an ulnar process when elbow is
straightened
• Coronoid fossa – anterior depression that receives a
radial process when elbow is bent
Radius
• Shorter bone of lower arm
• Located on thumb side of arm
• Disc-like head articulates with humeru and
with radial notch of the ulna (so your arm can
rotate)
• Radial tuberosity, a process below the head,
provides attachment for biceps
• Styloid process – at distal end; attachment for
wrist ligaments
Ulna
• Longer than radius
• Overlaps distal end of humerus posteriorly
• Proximal end has a wrenchlike opening called
the trochlear notch (articulates w/humerus)
– Oleacronon process – top process
– Coronoid process – bottom process
– Radial notch – just below trochlear notch
• Head – at distal end; articulates with ulnar
notch of radius
• Styloid process – attachment for wrist
ligaments
Label Diagrams
Wrist
• Wrist made of 8 carpal bones
– “Some lovers try positions that they can’t
handle.”
– Scaphoid
Lunate
Triquetrum
Pisiform
Trapezium
Trapezoid
Capitate
Hamate
Hand
• 5 metacarpals
– Numbered 1-5, starting at thumb
– Bones between wrist (carpals) and fingers (?)
– Rounded distal ends form knuckles
• Each finger, except thumb, has 3 phalanges:
– Proximal phalanx
– Middle phalanx
– Distal phalanx
– Thumb only has no middle phalanx.