A pectoral girdle , also referred to as the shoulder girdle, connects your upper limbs to the bones along the axis of your body.
What consists the shoulder girdle?
The shoulder girdle consists of three bones (clavicle, scapula, and humerus) and three joints (sternoclavicular, acromioclavicular, and glenohumeral) as shown in Fig.
Is the shoulder a girdle?
The shoulder girdle or pectoral girdle is the set of bones in the appendicular skeleton which connects to the arm on each side. In humans it consists of the clavicle and scapula; in those species with three bones in the shoulder, it consists of the clavicle, scapula, and coracoid.
What is the area in front of the shoulder girdle called?
The clavicle is the only bony attachment between the trunk and the upper limb. It forms the front portion of the shoulder girdle and is palpable along its entire length with a gentle S-shaped contour. The clavicle articulates at one end with the sternum (chest bone) and with the acromion of the scapula at the other.
What is the difference between shoulder and shoulder girdle?
Shoulder muscles consist of muscles of the shoulder joint, as well as shoulder girdle muscles. The shoulder girdle muscles make the scapula (shoulder blade) move.... ... The Shoulder girdle muscles move the clavicle (collar bone) and the scapula (shoulder blade).
What is the purpose 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 are the shoulder muscles called?
The primary muscle group that supports the shoulder joint is the rotator cuff muscles . The four rotator cuff muscles are the supraspinatus, infraspinatus, teres minor, and subscapularis. Together the rotator cuff muscles form a musculotendinous cuff as they insert on the proximal humerus.
How do I strengthen my shoulder girdle?
Draw elbows back while squeezing shoulder blades together behind you . You should feel the muscles between your shoulder blades activate and your chest opens up. This strengthens the scapular muscles for improved posture and scapular positioning.
What is the difference between the shoulder girdle and pelvic girdle?
The shoulder girdle or the pectoral girdle is a set of 4 bones which connects to the arm on each side. The pelvic girdle consists of two bones: sacrum and the coccyx. The pelvic girdle is formed of paired hip bones each made up of ilium, ischium and pubis. ... The pelvic girdle is located in the lower part of the trunk.
How many joints are in the shoulder girdle?
The shoulder girdle is composed of the clavicle and the scapula, which articulates with the proximal humerus of the upper limb. Four joints are present in the shoulder: the sternoclavicular (SC), acromioclavicular (AC), and scapulothoracic joints, and glenohumeral joint.
Which joint is in shoulder?
The glenohumeral joint is the one most people think of as the shoulder joint. It is formed where a ball (head) at the top of the humerus fits into a shallow cuplike socket (glenoid) in the scapula, allowing a wide range of movement.
What are the symptoms of a torn ligament in the shoulder?
- Shoulder pain and swelling.
- Increased pain with arm movement or shrugging your shoulder.
- Distortion in the normal contour of the shoulder.
How many different movements can the shoulder girdle perform?
This mobility provides the upper extremity with tremendous range of motion such as adduction, abduction, flexion, extension, internal rotation, external rotation, and 360° circumduction in the sagittal plane. Furthermore, the shoulder allows for scapular protraction, retraction, elevation, and depression.
What muscles make up the shoulder girdle?
Three main groups of muscles in the shoulder participate in the control of arm movement: (a) trapezius, levator scapula, rhomboid, serratus anterior , which arise from the main skeleton and insert on the scapula, moving and stabilizing this structure; (b) the rotator cuff muscles: teres minor, infraspinatus, ...
What are the main ligaments of the shoulder?
In the shoulder, the joint capsule is formed by a group of ligaments that connect the humerus to the glenoid. These ligaments are the main source of stability for the shoulder. They are the superior, middle and inferior glenohumeral ligaments . They help hold the shoulder in place and keep it from dislocating .
What are the 5 joints of the shoulder?
- 3.1 Glenohumeral Joint.
- 3.2 Acromioclavicular joint.
- 3.3 Sternoclavicular Joint.
- 3.4 Scapulothoracic Joint.
- 3.5 Bursae.
- 3.6 Soft Tissue (Static & Dynamic)
