Lesson 1: Scapular Muscles & Bony Landmarks Flashcards
Trail Guide to the Body (6th Edition)
Origin & Insertion
trapezius
Trail Guide p. 68
origin: external occipital protuberance, spinous processes C7-T12
insertion: acromion, clavicle, spine of scapula
Actions
trapezius (upper fibers)
Trail Guide p. 68
cervical extension
same side cervical lateral flexion
opposite side cervical rotation
scapular elevation
scapular upward rotation
Actions
trapezius (middle fibers)
Trail Guide p. 68
adduct scapula
stabilize scapula
Actions
trapezius (lower fibers)
Trail Guide p. 68
scapular depression
scapular upward rotation
Origin & Insertion
levator scapulae
Trail Guide p. 83
origin: transverse processes C1-C4
insertion: medial border of scapula
Actions
levator scapulae
Trail Guide p. 83
scapular elevation
scapular downward rotation
same side lateral cervical flexion
same side cervical rotation
cervical extension
Origin & Insertion
rhomboid major
Trail Guide p. 82
origin: spinous processes T2-T5
insertion: medial broder of scapula
Origin & Insertion
rhomboid minor
Trail Guide p. 82
origin: spinous processes C7-T1
insertion: medial border of scapula
Actions
rhomboids major & minor
Trail Guide p. 82
scapular adduction (retraction)
scapular elevation
scapular downward rotation
Origin & Insertion
serratus anterior
Trail Guide p. 86
origin: external surfaces of 8th and 9th ribs
insertion: anterior surface of medial border of scapula
Actions
serratus anterior
Trail Guide p. 86
scapular abduction (protraction)
scapular upward rotation
scapular depression
hold medial border of scapula against ribcage
Origin & Insertion
pectoralis minor
Trail Guide p. 92
origin: 3rd, 4th, and 5th ribs
insertion: coracoid process* (medial surface)
*coracoid process is a bony prominence of the scapula
Actions
pectoralis minor
Trail Guide p. 92
scapular abduction (protraction)
scapular depression
scapular downward rotation
Bony Landmarks
Identify the bony landmark
Trail Guide p. 52
spine of scapula
Bony Landmarks
Identify the bony landmark
Trail Guide p. 52
medial/vertebral border of scapula
Bony Landmarks
Identify the bony landmark
Trail Guide p. 53
inferior angle of scapula
Bony Landmarks
Identify the bony landmark
Trail Guide p. 53
superior angle of scapula
Bony Landmarks
Identify the bony landmark
Trail Guide p. 54
lateral border of scapula
Bony Landmarks
Identify the bony landmark
Trail Guide p. 55
infraspinous fossa
Bony Landmarks
Identify the bony landmark
Trail Guide p. 55
supraspinous fossa
Bony Landmarks
Identify the bony landmark
subscapular fossa
Bony Landmarks
Identify the bony landmark
Trail Guide p. 57
acromion process
Bony Landmarks
Identify the bony landmark
Trail Guide p. 57
clavicle
Bony Landmarks
Identify the bony landmark
Trail Guide p. 59
coracoid process
Bony Landmarks
Identify the bony landmark
Trail Guide p. 59
deltoid tuberosity
Bony Landmarks
Identify the bony landmark
Trail Guide p. 60
lesser tubercle of humerus
Bony Landmarks
Identify the bony landmark
Trail Guide p. 60
greater tubercle of humerus
Bony Landmarks
Identify the bony landmark
Trail Guide p. 60
intertubercular (bicipital) groove
