Scapulo-humeral Muscles Flashcards
1
Q
What is the nerve supply to the deltoid?
A
Axillary nerve (C5 and C6)
2
Q
What is the action of the anterior fibres of the delt?
A
Flex and internally rotate arm
3
Q
What is the action of the middle fibres of the delt?
A
Abduct arm from 15-90 degrees (with assistance from supraspinatus)
4
Q
What is the action of the posterior fibres of the delt?
A
Extension and external rotation of the arm
5
Q
What is the blood supply of the delt?
A
Posterior circumflex humeral artery
6
Q
What is the action of teres major?
A
Adduct and medially rotate arm (and extension)
7
Q
What is the nerve supply to the teres major muscle?
A
Subscapular nerve (lower)
8
Q
What is the blood supply to teres major muscle?
A
Circumflex scapular artery
