muscles of the torso

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transversus abdominis

(the six-pack stomach muscle). The transverse abdominis muscle runs horizontally across the abdomen and is recruited almost anytime a limb moves.

internal intercostals

Fix intercostal spaces during espiration. Aids forced inspiration by elevating ribs

rectus abdominis

each of a pair of long flat muscles at the front of the abdomen, joining the sternum to the pubis and acting to bend the whole body forward or sideways.

pectoralis major

Extends the arm at the shoulder joint from a flexed position.

external oblique

a band of fibers that runs vertically along the inside of the abdominal wall. Together, the external oblique muscles cover the sides of the abdominal area.

linea alba

band of connective tissue

rhomboid major

connects the scapula with the vertebrae of the spinal column.

pectoralis minor

depresses the point of the shoulder, drawing the scapula inferior and medial, towards the thorax, and throwing its inferior angle posteriorly.

sternoceidomastoid

each of a pair of long muscles that connect the sternum, clavicle, and mastoid process of the temporal bone and serve to turn and nod the head.

deltoid

each of the three parts of a deltoid muscle, attached at the front, side, and rear of the shoulder.

trapezius

either of a pair of large triangular muscles extending over the back of the neck and shoulders and moving the head and shoulder blade

trapezius

either of a pair of large triangular muscles extending over the back of the neck and shoulders and moving the head and shoulder blade.

levator scapulae

is located at the side and back of the neck. It is one component of the muscle system of the shoulder. Its primary function is to lift the scapula

teres major

muscle of the upper limb and one of seven scapulohumeral muscles

teres minor

narrow, elongated muscle of the rotator cuff.

supraspinatus

one of the four rotator cuff muscles and also abducts the arm at the shoulder

serratus anterior

originate on the upper eight ribs and insert into the medial border of the scapula. They stabilize the shoulder blades and when flexed will spread the ribs for an inhale

aponeurosis of external oblique

sheetlike tendon

latissimus dorsi

the larger, flat, dorso-lateral muscle on the trunk, posterior to the arm, and partly covered by the trapezius on its median dorsal region.

infraspinatus

thick triangular muscle, which occupies the chief part of the infraspinatous fossa.[1] As one of the four muscles of the rotator cuff, the main function of the infraspinatus is to externally rotate the humerus and stabilize the shoulder joint.


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