Unit 2: Superficial Back Muscles

Exam 1

what is a landmark?

a recognizable anatomical structure that is used as a point of reference in establishing the location of another structure or in determining certain measurements

how can the spine of the scapula be used as a landmark for superficial back?

the inferior angle of the spine of the scapula is about T7 spinous process

how can the iliac crest be used as a landmark in superficial back?

the top of the iliac crest can help identify L4 vertebra

what is the vertebra prominens?

the most prominent spinous process

usually C7, sometimes T1

what are the two aspects of the body of the scapula?

1. ventral (costal) surface

   1. smooth, sits on the ribs

2. dorsal surface

   1. big bar of bone on it

what are the three borders of the scapula?

1. vertebral (medial)

2. axillary (lateral)

3. superior

what are the three angles of the scapula?

1. superior

   1. junction of superior border and vertebral border

2. inferior

   1. junction of medial and axial border

3. lateral

   1. hidden; glenoid cavity of scapula; where head of humerus sits to form the glenohumeral joint

what are the three fossae of the scapula?

1. supraspinous

   1. dorsal

2. infraspinous

   1. dorsal

3. subscapular

   1. ventral

identify the spine of the scapula, the coracoid process, and the acromion process