What is protraction and retraction of scapula?

What is protraction and retraction of scapula?

Protraction of the scapula is sometimes called abduction of the scapula. The scapula is moved laterally and anteriorly along the chest wall. Retraction of the scapula is sometimes called adduction of the scapula. The scapula is moved posteriorly and medially along the chest wall.

What is an example of protraction?

Examples of protraction include: With the shoulder in 90o of abduction, brings the arms forward as if to hug someone. The scapulae begin to slide laterally and then anteriorly along the thorax, this is protraction.

What muscles do protraction and retraction?

Protraction is accomplished by the actions of the serratus anterior, pectoralis major, and pectoralis minor muscles. Retraction is accomplished by the actions of the trapezius, rhomboids, and latissimus dorsi muscles. The elevation is accomplished by the trapezius, levator scapulae, and rhomboid muscles.

What is the protraction?

1 : the act of moving an anatomical part forward. 2 : the state of being protracted especially : protrusion of the jaws.

What is protraction movement?

Protraction is movement of a body part in the anterior direction, i.e. being drawn forwards. The movement of protraction is the opposite of the movement of retraction. The only joints capable of protraction are the shoulder joint and the jaw.

What is retraction anatomy?

Retraction is the opposite motion, with the scapula being pulled posteriorly and medially, toward the vertebral column. For the mandible, protraction occurs when the lower jaw is pushed forward, to stick out the chin, while retraction pulls the lower jaw backward.

What is the difference between protraction and retraction?

Protraction vs Retraction Protraction and retraction are opposites. During protraction, the scapulae move away from the spine as you round the upper back (thoracic spine). In retraction, the scapulae move towards the spine and towards each other. Retracting is done by squeezing the shoulder blades together.

What is protraction mean?

Medical Definition of protraction 1 : the act of moving an anatomical part forward. 2 : the state of being protracted especially : protrusion of the jaws.

What is inversion anatomy?

Inversion is the turning of the foot to angle the bottom of the foot toward the midline, while eversion turns the bottom of the foot away from the midline. The foot has a greater range of inversion than eversion motion.

What is mandible protraction?

Raises the mandible against the maxillae with great force. Trigeminal nerve (V), mandibular branch (V3) Medial pterygoid. Lateral pterygoid plate and the pyramidal process of the palatine. Ramus and angle of the mandible via a strong tendinous lamina.

What’s the difference between a retraction and a protraction?

Protraction moves the scapula forward (anteriorly) and toward the side of the body (laterally) in an anterolateral direction. Retraction is the opposite movement. It causes the shoulder blades to move back (posteriorly) and toward the body’s midline (medially).

Which is the opposite of a retraction movement?

Retraction is the opposite movement. It causes the shoulder blades to move back (posteriorly) and toward the body’s midline (medially). This movement is known as a posteromedial movement.

Where is the protraction and retraction of the scapula?

Scapular Protraction and Retraction Muscles: serratus anterior is the prime mover. Retraction of the scapula is sometimes called adduction of the scapula. The scapula is moved posteriorly and medially along the chest wall.

Which is the opposite of depression, shrugging or protraction?

Shrugging is elevation, the opposite movement is depression. As with retraction, a good approximation of neutral is the spot in the middle of elevation and depression. The opposite is protraction – moving the shoulder blades away from the spine.