Osteology of Vertebral Column and Upper Extremity Flashcards
Muscles that attach to clavicle
Pectoralis major: anterior border
Subclavius: inferior surface
Trapezius: superior surface
Deltoid: superior surface and anterior border
Muscles attaching to coracoid process of scapula
- Short head of biceps brachii
- Coracobrachialis
- Pectoralis Minor
Muscles that attach to spine of scapula
Deltoid
Trapezium
Muscles that attach to medial/ventral border of scapula
- serratus anterior
- rhomboid minor
- rhomboid major
- levator scapulae: superior angle
- latissimus dorsi: inferior angle
Muscles that attach to Lateral/Axillary Border of Scapula
- Teres minor
- Terese major
Muscles that attach to glenoid of scapula
At suproglenoid turbercle: long head of biceps brachii
At infreglenoid tubercle: long head of triceps brachii
Muscles that make up the rotator cuff
Anterior: Suprascapularis @ subscapular fossa
Posterior: Supraspinatus @ supraspinous fossa
Infraspinatus @ infrasinous fossa
Teres minor @ lateral/axillary border
Muscles that attach to proximal humerous and shaft
Subscapularis attaches to lesser tubercle
Rest of rotator cuff muscles attach to greater tubercle
Long tendon of biceps brachii attaches to bicipital groove/intertubercular sulcus
Deltoid muscle attaches to deltoid tuberosity
Coracobrachialis and brachialis attach to midshaft
Muscles that attach to bicipital groove/intertubercular sulcus.
Where is it the groove located?
Long tendon of biceps brachii
Between the greater and lesser tubercles of humerus
Muscles that attach to deltoid tuberosity and midshaft of humerus
Deltoid tuberosity: deltoid muscle
Midshaft: Brachialis @ anterior
Coracobrachialis @ medial
What are the common flexor and extensor orgins for the distal humerus?
Common Flexor Origin = medial epicondyle. Origin for wrist + finger flexors.
Common extensor Origin = lateral epicondyle. Origin for wrist + finger extensors.
What forms the elbox joint?
Articulation with the radius and ulna
Muscle attachment at radius
Biceps brachii tendon @ radial tuberosity
Pronators and supinators of forearm + flexors and extensors of wrist and finger @ radial shaft.
Radius articulations
Head of radius articulates with capitulum of humerus and radial notch of ulna.
Distal end articulates with the scaphoid & lunate carpal bones.
Ulna articulations
Trochlear notch (semilunar notch) articulates with trochlea of humerus to form the stable hinge joint of elbow.
Distal ulna does not articulate with carpal bones.
Muscle attachment at ulna
brachialis (insertion) and pronator teres (origin) = coracoid process
Triceps tendon (insertion) = olercranon process/elbow
Pronator quadratus, supinator, and digital extensors = ulnar shaft
- Flexors and extensors at the _____ have thier insertion on the _____.
- While flexors and extensors at the _____ have thier insertion on the _____.
- Intrinsic muscles of teh hand mostly originate and insert on ________, but some insert on structures associated iwth _______.
- wrist, carpals
- digits, phalanges
- metacarpals, phalanges
Primary curvatures
Secondary curvatures
Primary: thoracic, sacral
Secondary: cervical, lumbar
Movement of cervical vertebrae
Flexion, extension, lateral flexion, and rotation. Have the greatest range of motion of entire vertebral column.
Thoracic Outlet Syndrome
Extra pair of ribs at C7 impinges on large vessels and brachial plexus nerves in region.
Causes: fractured clavicle, extra muscle/scar tissue near scalene muscles, poor neck/shoulder posture, anomalous anatomical variation of muscle/vasculature.
Movement in thoracic vertebrae
rotaion, leteral flexion limited. no flexion+extention.
Stay rigid when bent over.
Movement in lumbar vertebrae
flexion+extention, some lateral flexion, rotation prevented
