Muscles of the clavicle

The trapezius muscle posteriorly and deltoid muscle anteriorly. You Can Also Like Respiratory Control - Anatomy Mechanism Functions.

The muscles that take their origin from the clavicle are as follows.

Muscles of the clavicle. Two muscles are attached to the lateral third of the clavicle. The trapezius muscle which is attached along the posterior surface of the bone. The deltoid muscle where the anterior portion of the muscle is attached to the periosteum at the anterior surface of the bone.

Muscle Attachments of the Clavicle. Front anterior border pectoralis major muscle. Back posterior border sternocleidomastoid muscle sternohyoid muscle and trapezius muscle.

Top superior surface deltoid muscle and trapezius muscle. Three muscles are attached to the medial third of the clavicle. The sternocleidomastoid muscle where the muscular clavicular head of the muscle is attached to the superior surface of the bone.

The pectoralis major muscle which is attached to the anterior surface of the bone. Three muscles originate on the clavicle and 3 muscles insert on it. The muscles that take their origin from the clavicle are as follows.

The medial part is thicker than the lateral. The shaft of the clavicle acts a point of origin and attachment for several muscles deltoid trapezius subclavius pectoralis major sternocleidomastoid and sternohyoid. You Can Also Like Respiratory Control - Anatomy Mechanism Functions.

Three muscles are attached to the medial third of the clavicle. The sternocleidomastoid muscle where the muscular clavicular head of the muscle is attached to the superior surface of the bone. The pectoralis major muscle which is attached to the anterior surface of the bone.

The clavicle serves as a point of insertion for two muscles. The trapezius and subclavius and the point of origin for four muscles. The deltoid pectoralis sternocleidomastoid and sternohyoid.

However the biomechanical role of the clavicle in terms of overall shoulder motion and strength is not entirely understood. The shaft of the clavicle serves as an origin site for several muscles including the deltoid trapezius subclavius pectoralis major and sternohyoid. Acromial end of clavicle.

The acromial or lateral end of the clavicle has an oval facet for articulation with the acromion of the scapula to. Medial end of posterior surface provides attachment to sternohyoid muscle. Name the muscles ligaments attached and structures related to the lateral1 13rd of clavicle.

Anterior borde r- is concave anteriorly and provides attachment to deltoid muscle. Posterior border is convex posteriorly and provides attachment to trapezius muscle. The shaft of the clavicle acts a point of origin and attachment for several muscles deltoid trapezius subclavius pectoralis major sternocleidomastoid and sternohyoid Acromial lateral End The acromial end houses a small facet for articulation with the acromion of the scapula at the acromioclavicular joint.

Muscle of shoulder clavicle scapula humerus 1. Muscle of Shoulder Clavicle Scapula Humerus 1 2. Muscles of pectoral girdle b.

Muscles associated with scapula c. Muscles of the anteriorposterior compartment of arm 2 3. Muscles of pectoral girdle 1.

The subclavius muscle is a short triangular muscle of the thoracic wall that lies underneath the clavicle. It originates from the first rib and courses laterally to insert on the undersurface of the middle third of the clavicle. The main function of the subclavius is to stabilize the clavicle during movements of the shoulder girdle.

In addition it is significant in preventing injuries to the adjacent. The subclavius muscle resides in the subclavian groove of the clavicle and functions to depress the shoulder as well as pull the clavicle anteroinferiorly. The coracoacromial ligament is located laterally and provides support from the coracoid residing below.

Clavicle anatomy consists of medial end middle and lateral end. There are many ligaments and muscles connecting to these parts of clavicle. Clavicle bone is the First bone in the body to ossify at 5 weeks gestation and last to fuse medial epiphysis at 25 years of age.

On the superior surface of the clavicle there are four main muscular attachments. Medially it has two muscle attachments. Namely they are sternocleidomastoid muscle posteriorly and the pectoralis major muscle anteriorly.

Laterally also it has two attachments. The trapezius muscle posteriorly and deltoid muscle anteriorly. The clavicle serves to maintain lateral projection of the shoulder The clavicle also provides a base for insertion of the trunk and arm musculature The clavicle is the only bony attachment between the upper limb and the axial skeleton.

The shaft of the clavicle acts a point of origin and attachment for several muscles Deltoid trapezius subclavius pectoralis major sternocleidomastoid and sternohyoid 8. SURFACES Superior surface. The clavicular head of sternocleidomastoid muscle originates from medial half.

The two clavicles also called your collarbones are long bones found between your sternum and scapulae. They are found just above the first rib and help hol. Muscle that stabilizes the clavicle during movement subscapularis muscle that originates on the anterior scapula and medially rotates the arm superficial anterior compartment of the forearm flexor carpi radialis palmaris longus flexor carpi ulnaris flexor digitorum superficialis and their associated blood vessels and nerves.

The subclavius inserts on the inferior surface of the middle of the clavicle. The subclavius action is to depress the clavicle collarbone. When the subclavius is in an abnormally contracted state it draws the clavicle and hence the shoulder down and forward.

It also lifts the first rib up into the thoracic outlet. The clavicle is an S-shaped bone that is anchored by strong ligamentous attachments on both its medial and lateral ends. Muscular attachments to the clavicle include the sternocleidomastoid pectoralis major and subclavius muscles proximally and the deltoid and trapezius muscles distally.