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What does the pectoralis do?
The pectoralis major is a large chest muscle that is responsible for flexing, adducting, and internally rotating the arm at the shoulder joint. It also helps to stabilize the shoulder joint during movement.
What is the action of the levator scapulae?
The levator scapulae muscle primarily elevates and rotates the scapula (shoulder blade) downward and inward, allowing for movements such as shrugging the shoulders. It can also contribute to lateral flexion of the neck when acting unilaterally.
Which muscle is responsible for holding the scapula on the chest wall?
The Serratus Anterior muscle is responsible for holding the scapula against the chest wall. It helps stabilize the scapula and is important for proper shoulder movement and function.
Which muscle is located between the scapula and ribcage?
The serratus anterior muscle is located between the scapula and ribcage. It has a serrated ("saw-like") appearance and is responsible for stabilizing the scapula against the ribcage during arm movements.
Is the trapezius a flexor or an extensor?
Extensor. It will extend the neck and adduct the scapula.
Which muscle will depress the scapula or elevate the ribs?
The pectoralis minor originates on the third to the fifth ribs (and elevates ribs). It depresses the scapula (and elevates ribs).
Type of movement trapezius produces?
stabilizes, raises, retracts, and rotates scapula; adducts scapula and elevates /depresses scapula stabilizes, raises, retracts, and rotates scapula; adducts scapula and elevates /depresses scapula
What muscle group is your scapula from?
The scapula is not a muscle; it is a bone.
What does the pectoralis do?
The pectoralis major is a large chest muscle that is responsible for flexing, adducting, and internally rotating the arm at the shoulder joint. It also helps to stabilize the shoulder joint during movement.
What muscles can be antagonistic to themselves?
Trapezius - it elevates and depresses the scapula.
Name the origin of the supraspinatus muscle?
The supraspinatus muscle originates from the supraspinous fossa of the scapula.
What is the action of the levator scapulae?
The levator scapulae muscle primarily elevates and rotates the scapula (shoulder blade) downward and inward, allowing for movements such as shrugging the shoulders. It can also contribute to lateral flexion of the neck when acting unilaterally.
What is the action of the levitor scapulae muscle?
Raises the scapula at the Scapulothoracic Joint or inclines neck to corresponding side if the scapula is fixed
Which muscle moves the scapula forward?
Serratus Anterior, moves scapula forward.
What muscle tenses the neck and depresses the mandible?
Platysma
What is the action of the serratus anterior muscle?
Abducts scapula (moves scapula away from spinal column)
What is the strongest protractor of the scapula?
The strongest protractor of the scapula is the serratus anterior muscle. It originates from the upper ribs and inserts along the medial border of the scapula. Contraction of the serratus anterior muscle pulls the scapula forward around the rib cage.
