What muscles attach to the scapular?
The intrinsic muscles of the scapula include the rotator cuff muscles, teres major, subscapularis, teres minor, and infraspinatus. These muscles attach the scapular surface and assist with abduction and external and internal rotation of the glenohumeral joint.
What are the 7 scapular muscles?
They are amongst the muscles that act on and stabilise the glenohumeral joint in the human body. They include : coracobrachialis muscle. deltoid muscle….
- pronator teres.
- palmaris longus.
- flexor carpi radialis.
- flexor carpi ulnaris.
- flexor digitorum superficialis.
What muscles attach to lateral border of scapula?
Function
| Muscle | Direction | Region |
|---|---|---|
| Infraspinatus | origin | infraspinous fossa |
| Teres Minor | origin | lateral border |
| Teres Major | origin | lateral border |
| Latissimus Dorsi (a few fibers, attachment may be absent) | origin | inferior angle |
Why do we have Scapulas?
The scapula, better known as the shoulder blade, is a triangular bone that serves as a joining force between the clavicle and the humerus. This bone is located posteriorly (on the back half of the body). The scapula plays an important role in stabilizing the other bones involved in the rhythm of shoulder motion.
How many muscles insert onto the scapula?
17
In total, 17 different muscles attach to the scapula, which makes it difficult to fracture.
Which muscles attach the scapula to the axial skeleton?
The medial/vertebral border of the human scapula is the longest of the three borders and serves as the insertion point for four muscles connecting the scapula to the axial skeleton: one connects it to the costal surface (serratus anterior) and three to the medial/cranial aspect (major and minor rhomboids, and levator …
What 17 muscles attach to the scapula?
Each scapula has 17 muscles attached to it: 1. Posteriorly, from superficial to deep: trapezius, rhomboid major, rhomboid minor, supraspinatus, infraspinatus, levator scapulae, teres minor, teres major, latissimus dorsi, serratus anterior, and subscapularis. 2.
What are the 3 fossa of the scapula?
The scapula has three processes: the acromion, the spine, and the coracoid process. Above the spine is the supraspinous fossa and below it is the infraspinous fossa. A ridge runs down the infraspinous fossa near the lateral border from the glenoid cavity to just above the inferior angle.
What muscle attaches to the superior angle of the scapula?
Levator scapulae muscle – they insert into the superior angle and medial border (superior to the spine). Their roles are to elevation the scapula.
How does the scapula attach to the body?
The scapula is a flat, triangular-shaped bone (colloquially as the “shoulder blade”). It is located in the upper thoracic region on the dorsal surface of the rib cage. It connects with the humerus at the glenohumeral joint as well as the clavicle at the acromioclavicular joint to form the shoulder joint.
Why is the humerus important?
Function. The humerus serves as an attachment to 13 muscles which contribute to the movements of the hand and elbow, and therefore the function of the upper limb.
Which 16 muscles attach to the scapula?
16 muscles attached to scapula Flashcards Preview
- levator scapulae. O: poterior tubercles of the transverse process of the upper 3 or 4 cervical vertebrae.
- Rhomoid Minor.
- Rhomboid Major.
- serratus anterior.
- deltoid.
- supraspinatus.
- infraspinatus.
- Teres Minor.
Where does the scapula attach to the shoulder blade?
Scapula Anatomy : Bony Landmarks & Muscle Attachment Scapula: The scapula is also known as the shoulder blade. It articulates with the humerus at the glenohumeral joint, and the clavicle at the acromioclavicular joint. It is a triangular, flat bone, which attachment for 17 muscles.
What muscles are in the scapula?
Two more muscles that are inserted into the scapula are the Serratus anterior and the Pectoralis minor. The Serratus anterior is inserted to the whole length of the medial border of the scapula, anterior to the three other muscles mentioned above.
What are the muscles attached to the mandible?
The mandible serves as the attachment point for the various muscles, including the strong muscles of mastication. External (lateral) surface – mentalis, buccinator, platysma, depressor labii inferioris, depressor anguli oris.
Is the scapula attached to the axial skeleton?
However, because the medial aspect of the scapula is not directly attached to the axial skeleton, but is rather held in place and connected to the thorax and vertebral column by muscles, the scapula can move freely across the posterior thoracic wall (scapulothoracic joint).