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Encyclopedia > Scalene muscles

The scalene muscles are a group of three pairs of muscles in the lateral neck, namely the anterior scalene, middle scalene, and posterior scalene. They originate from the lateral processes from the cervical vertebrae of C3 to C7 and insert onto the first and second ribs. They are innervated by the spinal nerves C3-C8. The action of the anterior and middle scalene muscles is to elevate the first rib and rotate the neck to the opposite side; the action of the posterior scale is to elevate the second rib and tilt the neck to the same side. A top-down view of skeletal muscle Muscle is the contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells. ... The neck is the part of the body on many limbed vertebrates that distinguishes the head from the torso or trunk. ... A cervical vertebra Cervical vertebrae (Vertebrae cervicales) are the smallest of the true vertebrae, and can be readily distinguished from those of the thoracic or lumbar regions by the presence of a foramen (hole) in each transverse process. ... The human rib cage. ... The term spinal nerve generally refers to the mixed spinal nerve, which is formed from the dorsal and ventral roots that come out of the spinal cord. ... The neck is the part of the body on many limbed vertebrates that distinguishes the head from the torso or trunk. ...


The scalene muscles have an important relationship to other structures in the neck. The brachial plexus and subclavian artery pass between the anterior and middle scalenes. The subclavian vein passes arteriorly to the anterior scalene as it crosses over the first rib. The brachial plexus is an arrangement of nerve fibres (a plexus) running from the spine (vertebrae C5-T1), through the neck, the axilla (armpit region), and into the arm. ... The subclavian artery is a major artery of the upper thorax that mainly supplies blood to the head and arms. ... The subclavian vein is a continuation of the axillary vein and runs from the outer border of the first rib to the medial border of anterior scalene muscle. ...


They also act as accessory muscles of inspiration, along with the sternocleidomastoid. In human anatomy, the sternocleidomastoid muscles are muscles in the neck that acts to flex and rotate the head. ...


See also


The Scalenus anterior (Scalenus anticus) lies deeply at the side of the neck, behind the Sternocleidomastoideus. ... The Scalenus medius, the largest and longest of the three Scaleni, arises from the posterior tubercles of the transverse processes of the lower six cervical vertebræ, and descending along the side of the vertebral column, is inserted by a broad attachment into the upper surface of the first rib, between... The Scalenus posterior (Scalenus posticus), the smallest and most deeply seated of the three Scaleni, arises, by two or three separate tendons, from the posterior tubercles of the transverse processes of the lower two or three cervical vertebræ, and is inserted by a thin tendon into the outer surface of...

Muscles of the Head -- Neck -- Trunk -- Upper limb -- Lower limb -- LIST OF ALL MUSCLES
SUPERFICIAL CERVICAL: platysma | (Gray's s110)

LATERAL CERVICAL: sternocleidomastoid | (Gray's s111) A top-down view of skeletal muscle Muscle is the contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells. ... This is a list of muscles of the human anatomy. ... The platysma is a superficial muscle that stretches from the clavicle to the mandible overlapping the sternocleidomastoid. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ... In human anatomy, the sternocleidomastoid muscles are muscles in the neck that act to flex and rotate the head. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


SUPRAHYOID: digastric | stylohyoid | mylohyoid | geniohyoid - INFRAHYOID: sternohyoid | sternothyroid | thyrohyoid | omohyoid | (Gray's s112) The term suprahyoid refers to the region above (superior) to the hyoid bone in the neck. ... The digastric muscle (named digastric as it has two bellies) is a small muscle located under the jaw. ... The Stylohyoid muscle is a slender muscle, lying in front of, and above the posterior belly of the digastric muscle. ... The Mylohyoid muscle, flat and triangular, is situated immediately above the anterior belly of the Digastricus, and forms, with its fellow of the opposite side, a muscular floor for the cavity of the mouth. ... The Geniohyoideus (Geniohyoid muscle) is a narrow muscle, situated above the medial border of the Mylohyoideus. ... The term infrahyoid refers to the region below(inferior) to the hyoid bone in the neck. ... The Sternohyoid muscle is a muscle of the human body. ... The Sternothyroid muscle is a muscle of the human body. ... The Thyrohyoid muscle is a muscle of the human body. ... The omohyoid muscle is a muscle at the front of the neck that consists of two bellies separated by an intermediate tendon. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


VERTEBRAL -- ANTERIOR: longus colli | longus capitis | rectus capitis anterior | rectus capitis lateralis (Gray's s113) The Longus colli muscle is a muscle of the human body. ... The Longus capitis muscle is a muscle of the human body. ... Wikipedia does not have an article with this exact name. ... The Rectus capitis lateralis muscle is a muscle of the human body. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


LATERAL: scalenus anterior | scalenus medius | scalenus posterior | (Gray's s114) The scalene muscles are a group of three pairs of muscles in the lateral neck, namely the anterior scalene, middle scalene, and posterior scalene. ... The scalene muscles are a group of three pairs of muscles in the lateral neck, namely the anterior scalene, middle scalene, and posterior scalene. ... The scalene muscles are a group of three pairs of muscles in the lateral neck, namely the anterior scalene, middle scalene, and posterior scalene. ... An illustration from the 1918 edition Henry Grays Anatomy of the Human Body, commonly known as Grays Anatomy, is an anatomy textbook widely regarded as a classic work on human anatomy. ...


 
 

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