Match each muscle of the trunk with the correct label.

Skeletal muscles are responsible for voluntary contractions. (1) Deltoid (2) Pectoralis major (3) Serratus anterior (4) Latissimus dorsi  (5) Trapezius

The followings are skeletal muscles responsible for the voluntary contraction of different bone structures.

Deltoid (1)

- Origen ⇒ Three origen point ⇒  the clavicle, acromion, and scapula.                                                              

- Function ⇒ This muscle is involved in the shoulder movement.

Rhomboideus

- Origen ⇒ Scapular vertebral edge

- Function ⇒ Scapula abductor, rotator and elevator.

Serratus anterior (3)

- Origen ⇒ Internal scapular vertebral edge

- Function ⇒ Scapula separation, rotation

Pectoralis major (2)

- Origen ⇒ Anterior face of the clavicle, sternocostal articulations, and costal cartilage.

- Function ⇒ depends on the region

Trapezius (5)

- Origen ⇒ cervical and dorsal vertebrae

- Insertion ⇒ the clavicle, acromion, and scapula

- Function ⇒ scapula elevation, adduction, and rotation. Clavicle traction.

Latissimus dorsi (4)

- Origen ⇒ from the seventh dorsal vertebra to the sacrum dorsal crest.

- Insertion ⇒ In the humerus

- Function ⇒ Involved in the arm movement. Abduction, extension, and rotation.

The labels in the picture are,

(1) Deltoid

(2) Pectoralis major

(3) Serratus anterior

(4) Latissimus dorsi

(5) Trapezius

You can learn more about body skeletal muscles at

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