Exam #6_Lab: Scapular Region Flashcards
What is the origin of the deltoid?
1) Scapular spine
2) Acromion
3) Clavicle
What nerve supplies the deltoid?
Axillary n.
What arteries supplies the deltoid?
Posterior circumflex humoral a.
What are the borders of the quadrangular space?
Superior= teres minor Inferior= teres major Medial= long head of triceps brachii Lateral= surgical neck of humerus
What structures pass through the quadrangular space? Where are they going?
1) Axillary n.
2) Posterior circumflex humoral a.
BOTH going to deltoid m.
Where is the supraspinatus?
Superior to the spine of the scapula
Where is the infraspinatus?
Inferior to the scapular spine
Where is the teres minor?
Blends with infraspinatous, inferior to the scapular spine
Where is the teres major?
Inferior to the teres minor
- Origin is the angle of the scapula
- Inserts on the bicepital groove
What is the coracoacromial ligament?
Ligament from the coracoid process of the scapula to the acromion
What is the insertion of the supraspinatous muscle?
Greater tubercle of the humerus
Describe the path of the tendon of the supraspinatous m.
Passes deep to the acromion & coracoacromial ligament to insert on the greater tubercle of the humerus
What nerve supplies the supraspinatous muscle?
Suprascapular n.
What artery supplies the supraspinatous m?
Suprascapular a.
What ligament bridges the suprascapular notch?
Suprascapular ligament
What is the landmark for finding the suprascapular n. & a.? What is the orientation about this landmark? Mnemonic?
- Suprascapular ligament
- Remember “Army over Navy” i.e. artery above ligament & nerve below
What muscles do the suprscapular n. & a. supply?
Spraspinatous m.
Infraspinatous m.
Where is the infraspinatous m.?
Below the spine of the scapula
What muscle passes between the teres minor & major?
Long head of the triceps brachii
What are the boundaries of the triangular space?
inferior: teres major
lateral: long head of triceps
superior: lower border of teres minor
What structures pass through the triangular space?
1) Circumflex scapular a.
2) Lower subscapular n.
What muscle does the lower subscapular n. innervate?
Teres major
Review the osteology of the scapula.
N/A
