abduction of the shoulder- crucifix on the rings in gymnastics adduction of the shoulder- second half of a star jump?
You are demonstrating shoulder abduction, which involves moving your arms away from your body out to the side.
abduction, adduction,rotation, elevation
The axillary nerve, which arises from the brachial plexus, is primarily responsible for innervating the deltoid muscle. It provides motor innervation to the deltoid muscle, controlling its function of shoulder abduction.
Trapezius and Levator Scapulae
acromi-deltoid (abducts humerus)
The middle part of the deltoid abducts the shoulder, as well as shoulder abduction at the supraspinatus and biceps brachii muscles.
The 9 primary joint actions of the shoulder joint are flexion, extension, abduction, adduction, internal rotation, external rotation, horizontal abduction, horizontal adduction, and circumduction.
The glenohumeral joint is responsible for allowing movements of the shoulder, like flexion, extension, abduction, adduction, internal rotation, and external rotation. It provides mobility and flexibility in the upper limbs. Additionally, it helps to stabilize the shoulder during various activities.
The capsular pattern of the shoulder joint is limited external rotation, followed by limited abduction, and then limited internal rotation. It is a characteristic pattern of restriction seen in conditions such as adhesive capsulitis (frozen shoulder) and can help differentiate shoulder joint pathology from other causes of shoulder pain.
The outward extension of the shoulder bone is called the acromion process. It forms the outer part of the shoulder blade (scapula) and contributes to the shoulder joint's stability and range of motion.
The brachial plexus serves the shoulder and arm. It is a network of nerves located in the neck and armpit region that supplies motor and sensory innervation to the muscles and skin of the shoulder and arm.