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Appendicular Skeleton - Upper Extremity Anatomy

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Terms in this set (35)

  • Scapula
    A flat, triangular bone that forms the posterior part of the shoulder girdle.
  • Spine of Scapula
    A prominent ridge running across the posterior surface of the scapula.
  • Acromion Process
    The lateral extension of the scapular spine that forms the highest point of the shoulder.
  • Coracoid Process
    A hook-like bony projection on the anterior scapula serving as a muscle attachment site.
  • Superior Angle of Scapula
    The uppermost point of the scapula where the medial and superior borders meet.
  • Inferior Angle of Scapula
    The lowest point of the scapula where the medial and lateral borders meet.
  • Axillary (Lateral) Border of Scapula
    The thick edge of the scapula closest to the armpit.
  • Vertebral (Medial) Border of Scapula
    The edge of the scapula closest to the vertebral column.
  • Glenoid Cavity
    A shallow socket on the scapula that articulates with the head of the humerus.
  • Supraspinous Fossa
    A depression above the scapular spine that houses the supraspinatus muscle.
  • Infraspinous Fossa
    A large depression below the scapular spine for the infraspinatus muscle.
  • Subscapular Fossa
    A broad concave surface on the anterior scapula for the subscapularis muscle.
  • Clavicle
    The collarbone connecting the scapula to the sternum.
  • Sternal End of Clavicle
    The medial end of the clavicle that articulates with the sternum.
  • Acromial End of Clavicle
    The lateral end of the clavicle that articulates with the acromion of the scapula.
  • Humerus Head
    The rounded proximal end of the humerus that fits into the glenoid cavity.
  • Anatomical Neck of Humerus
    The slight constriction just below the head of the humerus.
  • Surgical Neck of Humerus
    The narrowed region below the tubercles, common site of fractures.
  • Greater Tubercle of Humerus
    A large lateral projection for muscle attachment.
  • Lesser Tubercle of Humerus
    A smaller anterior projection for muscle attachment.
  • Intertubercular Groove
    A groove between the greater and lesser tubercles that guides the biceps tendon.
  • Deltoid Tuberosity
    A roughened area on the lateral humerus shaft where the deltoid muscle attaches.
  • Medial Epicondyle of Humerus
    A bony projection on the distal medial humerus for muscle attachment.
  • Lateral Epicondyle of Humerus
    A bony projection on the distal lateral humerus for muscle attachment.
  • Trochlea
    A spool-shaped distal humerus surface that articulates with the ulna.
  • Capitulum
    A rounded distal humerus surface that articulates with the radius.
  • Olecranon Fossa
    A posterior depression on the distal humerus that accommodates the olecranon of the ulna.
  • Ulna Head
    The distal end of the ulna near the wrist.
  • Olecranon Process
    The prominent proximal end of the ulna forming the elbow tip.
  • Trochlear Notch
    A large C-shaped notch on the ulna that articulates with the humerus trochlea.
  • Radius Head
    The disc-shaped proximal end of the radius that articulates with the humerus and ulna.
  • Radial Tuberosity
    A roughened area below the radius head for biceps tendon attachment.
  • Carpals
    Eight small bones forming the wrist: scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, hamate.
  • Metacarpals
    Five bones of the palm numbered 1 to 5 from thumb to little finger.
  • Phalanges
    Bones of the fingers; each finger has proximal, middle, and distal phalanges except the thumb which lacks a middle phalanx.