Which head of the biceps attaches onto the glenoid on the scapula?

Which head of the biceps attaches onto the glenoid on the scapula?

The two last posterior glenoid rim variants can be associated with varying degrees of posterior shoulder instability due to loss of concavity of the inferior glenoid margin. At the superior aspect of the glenoid, the long head of the biceps attaches to the supraglenoid tubercle [4,6].

What connects the biceps to the shoulder?

Two tendons attach the biceps muscle to the shoulder: the “long head” tendon that attaches the muscle to the top of the shoulder’s socket and the “short head” that attaches it to the front of the shoulder. Tears almost exclusively occur in the long head.

Where does the arm bone attach to the scapula?

The scapula has a joint that wraps around from the back to the front of the shoulder called the acromion. The acromion is the part of the scapula that attaches to the collar bone and is the only true joint attaching the arm to the body.

What muscles are involved in attaching the arm to the scapula?

The most important shoulder muscles are the four rotator cuff muscles – the subscapularis, supraspinatus, infraspinatus and teres minor muscles – which connect the scapula to the humerus and provide support for the glenohumeral joint.

Why are biceps called biceps?

The term biceps brachii is a Latin phrase meaning “two-headed [muscle] of the arm”, in reference to the fact that the muscle consists of two bundles of muscle, each with its own origin, sharing a common insertion point near the elbow joint.

What Innervates the biceps?

The biceps brachii muscle receives its innervation from the C5 and C6 fibers of the musculocutaneous nerve. The brachialis muscle originates on the distal portion of the anterior humerus, and inserts on both the coronoid process and tuberosity of the ulna.

What bones are attached to the scapula?

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.

What is another name for the shoulder blade and what two bones attach to it?

Anatomical terms of bone In anatomy, the scapula (plural scapulae or scapulas), also known as the shoulder bone, shoulder blade, wing bone, speal bone or blade bone, is the bone that connects the humerus (upper arm bone) with the clavicle (collar bone).

What is another word for shoulder blade?

scapula
(Anatomy) The scapula. Another name of shoulder blade.

Which of the following terms refers to the movement of the scapula medially toward the spinal column as in pinching the shoulder blades together?

In the context of shoulder girdle movements, which of the following terms refers to the movement of the scapula medially toward the spinal column, as in pinching the shoulder blades together? Answers: Adduction.

How many muscles attaches to the scapula?

It connects with the humerus at the glenohumeral joint as well as the clavicle at the acromioclavicular joint to form the shoulder joint. In total, 17 different muscles attach to the scapula, which makes it difficult to fracture.

What muscles attach to the scapula?

The scapula forms the posterior of the shoulder girdle. It is a sturdy, flat, triangular bone. The scapula provides attachment to several groups of muscles. The intrinsic muscles of the scapula include the rotator cuff muscles, teres major, subscapularis, teres minor, and infraspinatus.

Does the rotator cuff run above the scapula?

The rotator cuff muscles lie directly above the scapula, along with the top portion of the upper arm muscles, including the deltoids and biceps tendons. Two important arteries, the axillary artery and the subclavian artery, run anterior to the scapula and posterior to the clavicle.

What are the intrinsic and extrinsic muscles of the scapula?

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. The extrinsic muscles include the triceps, biceps, and deltoid.

What is an example of scapular motion?

One example of the importance of scapular motion for the full range of motion of the upper extremity is that of the winged scapula (See Clinical Significance), in which paralysis of the serratus anterior or trapezius prohibits the raising of the upper extremity above the level of the shoulder. Embryology