Which is the insertion of the teres major?
Which is the insertion of the teres major?
Teres major muscle
| Origins | Inferior angle and lower part of the lateral border of the scapula |
|---|---|
| Insertions | Intertubercular sulcus (medial lip) of the humerus |
| Innervation | Lower subscapular nerve (C5-C7) |
| Blood supply | Thoracodorsal branch of subscapular artery and posterior circumflex humeral artery |
What is the insertion of latissimus dorsi?
Latissimus dorsi muscle
| Latissimus dorsi | |
|---|---|
| Origin | Spinous processes of vertebrae T7-L5, thoracolumbar fascia, iliac crest, inferior 3 or 4 ribs and inferior angle of scapula |
| Insertion | Floor of intertubercular groove of the humerus |
| Artery | Thoracodorsal branch of the subscapular artery |
| Nerve | Thoracodorsal nerve (C6, C7, C8) |
Where does the latissimus dorsi origin and insertion?
Origin of the latissimus dorsi is from spinous processes of thoracic T7–T12, thoracolumbar fascia, iliac crest and inferior 3 or 4 ribs, inferior angle of scapula and insertion on floor of intertubercular groove of the humerus.
Is teres major part of latissimus dorsi?
The teres major muscle lies superior to latissimus dorsi. The adjoining fibers of these two muscles are united, but separated by a bursa towards their humeral attachments. As they span the interval between the scapula and proximal humerus, the latissimus dorsi and teres major form the posterior axillary fold.
What is the insertion of the teres major muscle quizlet?
The medial TPs in the teres major are injected against the back of the scapula like TPs in the infraspinatus muscle, but more caudally (A).
Where is teres major muscle?
Teres major is a small muscle that runs along the lateral border of the scapula. It forms the inferior border of both the triangular space and quadrangular space.
Where do your lats attach?
As the muscle fibers of the lats extend from the origin to the insertion point (the insertion for the lats is located on the inner aspect of your upper arm bone, just below the shoulder joint) they taper into a point. This wide origin into a pinpointed insertion forms of the muscle, a triangular-like shape.
What is teres major and latissimus dorsi?
The teres major muscle is a muscle of the upper limb. It attaches to the scapula and the humerus and is one of the seven scapulohumeral muscles. The teres major muscle (from Latin teres, meaning “rounded”) is positioned above the latissimus dorsi muscle and assists in the extension and medial rotation of the humerus.
What is the action of the teres major muscle?
Function. The teres major is a medial rotator and adductor of the humerus and assists the latissimus dorsi in drawing the previously raised humerus downwards and backwards (extension, but not hyperextension). It also helps stabilise the humeral head in the glenoid cavity.
What is the insertion of the infraspinatus?
The infraspinatus originates from the infraspinous fossa of the scapula (shoulder blade). From this location, the infraspinatus muscle travels upward diagonally and inserts onto the greater tubercle of the humerus (long bone of the upper arm).
