Scalene Triangle Anatomy

Bipolar limb leads i ii and iii form einthovens triangle. Ladder are three paired cervical muscles running from the cervical vertebrae to the upper two ribs.

Scalenes Anatomy Medbullets Step 1

Also behind the anterior scalene are the pleura of the lungs and the superior intercostal artery.

Scalene triangle anatomy. The brachial plexus and subclavian artery pass between the anterior and middle scalene muscles. Scalenus posterior is the smallest and most deeply seated of the scalene muscles. Einthovens triangle an imaginary equilateral triangle with the heart at its center formed by the axes of the three bipolar limb leads.

The scalene triangle is bound by the anterior and middle scalene muscles with the first rib at the base. The brachial plexus nerves yellow and the subclavian artery red pass through the scalene triangle while the subclavian vein blue passes in front. Hereby they form a roof over the pleura and the upper thorax.

The scalene muscles are an important part of the anatomy of the neck with several important structures located between and around them. It arises by two or three separate tendons from the posterior tubercles of the transverse processes of the lower two or three cervical vertebrae and is inserted by a thin tendon into the outer surface of the second rib behind the attachment of the anterior scalene. Together with the first rib these muscles form a triangle known as the scalene triangle or interscalene triangle also called the posterior scalene foramen the scalene hiatus or the scalene fissure through which the brachial plexus nerves and the subclavian artery pass.

The scalene muscles latin. The scalene muscles are subdivided into. The posterior scalene latin.

The innervation is carried by direct branches of the cervical and brachial plexuses c3 6.

Anatomy Of Inter Scalene Triangle And Its Role In Thoracic