What are the movements of the shoulder girdle?

What are the movements of the shoulder girdle?

The movements in this joint include elevation, depression, retraction, protraction and superior and inferior rotation of the scapula.

What muscles do adduction of the shoulder?

Adduction is accomplished primarily by the pectoralis major, latissimus dorsi, teres major, triceps, and coracobrachialis. The deltoid and the supraspinatus, a muscle that runs along the scapula in the back, are the two main abductors of the shoulder.

What muscles abduct the shoulder girdle?

The primary muscles involved in the action of arm abduction include the supraspinatus, deltoid, trapezius, and serratus anterior.

Where does shoulder adduction occur?

Abduction/Adduction On the other hand, shoulder adduction happens as you move your arms towards the center of your body. Hugging yourself is an example of shoulder adduction. The normal range for this shoulder movement is within 30 to 50 degrees, depending on your body composition and flexibility.

What is the function of the shoulder girdle?

Your pectoral girdles are responsible for providing structural support to your shoulder region on the left and right side of your body. They also allow for a large range of motion, connecting muscles necessary for shoulder and arm movement.

What is adduction of the scapula?

Scapular Adduction – Also called scapular extension or retraction. It is a movement the opposite of abduction. Throwing the shoulder back and pinching the shoulder blades together illsutrates adduction of the shoulder girdles.

Which of the following muscles adducts the scapula?

Muscles of the Neck, Shoulder, Chest and Abdomen

Muscle Name Origin Action
Coracobrachialis Scapula Adducts arm
Epitrochlearis Latissimus dorsi Rotates radius
External intercostals Lower border of each rib Elevates ribs Aids in inhalation
External oblique Caudal ribs Compresses abdomen Rotates trunk

Where does most of the movement in the shoulder girdle occur?

scapulothoracic joint
All of these movements occur within the scapulothoracic joint. The acromioclavicular joint is made up of the flattened distal head of the clavicle, which fits into the medial aspect of the acromion process of the scapula.

What is the adduction movement?

Adduction: Movement of a limb toward the midline of the body. The opposite of adduction is abduction.

What is adduction of the muscle?

Adduction, which means to move closer to the median plane of the body, is the opposite of abduction. The abductor muscles of the leg are often referred to as the hip abductors and are comprised of the gluteus medius muscle (the primary abductor) and the gluteus minimus.

What is shoulder horizontal abduction and adduction?

Horizontal adduction (A) and horizontal abduction are used to describe the position of the arm in the sagittal plane of motion with reference to the center of the torso (horizontal neutral; B).

What muscle adducts the arm and flexes the shoulder?

The deltoid
The deltoid, the thick muscle that creates the rounded lines of the shoulder is the major abductor of the arm, but it also facilitates flexing and medial rotation, as well as extension and lateral rotation.

What is the difference between horizontal adduction and adduction?

Brent Brookbush This is not uniform in all textbooks, although it should be “Horizontal Adduction” is adduction (bone moving closer to midline) in the horizontal plane. Example, bringing your hands together in front of your chest, as you do during a chest flye.

What type of lever is shoulder abduction?

The shoulder joint is a 3rd Order lever: the clavicle and humerus form the fulcrum; the deltoid muscle is contracting, abducting the humerus; the arm is moving out and upward.

What is shoulder horizontal adduction?

This movement is called Shoulder Horizontal Adduction. There are many muscles that are involved in the Adduction of the Shoulder. The Shoulder Adduction Muscles include, An example of Adduction of the Shoulder is if you were to hug yourself.

What is the girdle of the shoulder?

The shoulder girdle is also called the pectoral girdle, and it is a bone ring, incomplete posteriorly. The shoulder girdle is formed by two sets of bones : the scapulae, posteriorly, the clavicles anteriorly and completed anteriorly by the manubrium of the sternum (part of the axial skeleton).

How do the shoulder joint&shoulder girdle work together?

• Shoulder joint & shoulder girdle work together in carrying out upper extremity activities • Shoulder girdle movement is not dependent upon the shoulder joint & its muscles © McGraw-Hill Higher Education.

Which part of the shoulder girdle assists in retraction and rotation?

This part of the muscle assists in retraction and rotation. When all parts of the muscle work together they have the effect of simultaneously elevating and retracting the scapula. The Trapezius is one of the shoulder girdle muscles most commonly used to fix the scapula, to allow the Deltoid to move the Humerus.