A Nod to Scalenes

How much do you know about your scalene muscles? If you just tilted your head in confusion, you can attribute that simple movement, in part, to yourscalenes,three pairs of muscular tissue that flank the sides of the neck.

Anterior scalenes,on the front side of the neck, connect the third through sixth cervical vertebrae to the first rib.

Posterior scalenes,near the back side, stretch from the bottom three or four vertebrae to the second rib.

Middle scalenes,the longest and largest of the three, are between the anterior and posterior scalenes and attach all six lower vertebrae to the first rib (Bordoni & Varacallo 2018; Anatomy Next 2019).

共同努力,斜角肌保持姿势tween the neck and head, help move the neck, and act as accessory breathing muscles (Bordoni & Varacallo 2018).

Here are some more details that could turn your head:

• You may be familiar with the wordscaleneas it relates to triangles. The term comes from the Greek wordskalenos,meaning uneven, and refers to atriangle of unequal sides—roughly the shape formed by the three scalene muscles (Gest & Schlesinger 1995).
• As secondary respiratory muscles, the scalenes assist withforced inspiration—which occurs when increased physical exertion requires more oxygen—by lifting the attached ribs to allow more breathing capacity for the lungs (Bordoni & Varacallo 2018).
• When scalene muscles on both sides contract simultaneously, they flex the neckforward.When scalenes contract on one side only, they bend the necklaterallyto the same side as the contracting muscles (Anatomy Next 2019; Buford et al. 2002).
• Properstretchingof the scalenes can be achieved by extending the head and neck laterally and rotating the head toward the opposite side of the target muscles (Buford et al. 2002).
• In addition to anterior, middle and posterior scalenes, some people have a fourth scalene muscle, called theminimum scalene,connecting the seventh vertebra to the first rib (Bordoni & Varacallo 2018).