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The muscles of the neck are closely related to a number of important structures that pass between the thorax and the head, including major blood vessels, nerves and elements of the respiratory and gastrointestinal systems. Explore and learn about the muscles of which rotate the cervical spine with our 3D interactive anatomy atlas. Then turn to the other side. These muscle strips travel superiorly and medially to insert onto the inferior surface of the basilar part of the occipital bone. It originates from the skin and fascia overlying the region of the clavicle and passes superiorly along the neck. Muscles of the neck: An overview: want to learn more about it? The intertransversari colli represent the cervical portion of the intertransversarii muscles, which belong to the deepest layer of the intrinsic back muscles. However, the thyrohyoid has an additional function when the hyoid bone is fixed, in which it elevates the larynx. The interspinales cervicis is the cervical part of the interspinales muscle group. These muscles are surrounded by the prevertebral fascia of the neck, which is why they are commonly referred to as prevertebral muscles. The function of the sternocleidomastoid muscle depends on whether the muscle acts alone or together with its contralateral counterpart. The principal function of these muscles is flexion of the head to varying degrees. Neck drop and raise. Once the head has been flexed forward as far as it can comfortably go, hold the stretch for 5 seconds before returning to neutral position. Its clavicular head originates from the medial third of the clavicle, while its sternal head arises from the manubrium of sternum. Ackland DC, Merritt JS, Pandy MG. All rights reserved. The geniohyoid is a short muscle that arises from the inferior mental spine of the mandible and runs posteroinferiorly to insert into the superior border of the body of the hyoid bone. Note: Keep your shoulders on the floor. The platysma is innervated by the cervical branch of facial nerve (CN VII), and vascularized by the submental branch of the facial artery, and suprascapular branch of the thyrocervical trunk. Many are there to supply the lower half of the body but many supply the male reproductive…. The anterior and middle scalenes attach to the first rib, while the posterior scalene attaches to the second rib. It is extremely important for athletes involved in contact sports to stretch out neck muscles. Register now All rights reserved. The omohyoid is a narrow muscle that connects the scapula to the hyoid bone. Netter, F. (2019). It also allows the ligaments on the neck joints to become more flexible and withstand increased stress to the area. They connect the hyoid bone to the mandible and the base of the skull and form the floor of the oral cavity. These are: All four of the suboccipital muscles are innervated by the suboccipital nerve (C1), and vascularized by the vertebral artery and the deep descending branches of the occipital artery. In order to rotate your neck properly, Pham recommends grabbing a pillow. The scalenes are muscles of the neck, but are also classified as being in the lateral vertebral region. Don’t lift or tuck your chin as you turn your head. Palastanga, N., & Soames, R. (2012). Muscles of the Neck As for the muscles, there are at least 13 that feed into the neck and allow it to function properly. © 2005-2020 Healthline Media a Red Ventures Company. It is also important to know the rotation action of the target muscle when treating it. The blood supply to the splenius muscles is by the occipital and transverse cervical arteries. It arises from the superior part of the manubrium of sternum and the posterior surface of the medial end of the clavicle. Such as rotating either shoulder so it sits under your chin or the trunk rotation during power walking or nordic type exercises. Based on the orientation of its fibers, the trapezius is divided into three parts; descending, transverse and ascending part, each of them having distinct attachments. Hold for a few seconds and do … The stylohyoid muscle is innervated by the stylohyoid branch of the facial nerve (CN VII). The scalene muscles are 3 pairs of lateral neck muscles that connect the mid and lower cervical spine with the top of the rib cage. A sore and stiff neck is often experienced by people first thing in the morning as well as at the end of a long workday. Due to its direct attachment to the skin of the lower face, the platysma functions mainly as a muscle of facial expression. The anterior belly is innervated by the nerve to mylohyoid, a branch of the inferior alveolar nerve, while the posterior belly receives innervation from the digastric branch of the facial nerve. The nerve supply to the omohyoid is provided by the ansa cervicalis. The splenius group consists of two muscles, the splenius capitis and splenius cervicis. In addition, since the intermediate tendon of the omohyoid is connected to the carotid sheath, when the muscle contracts, it pulls on the sheath and decreases the pressure in the internal jugular vein. The platysma inserts into several points, including the mandible, the skin of the lower face, lower lip and the corners of the mouth. The most common causes of neck pain are strain or tension in the muscles of neck. Its blood supply is derived from the facial, occipital and posterior auricular arteries. The muscle is vascularized by the superior thyroid branch of the external carotid artery. Clinically Oriented Anatomy (7th ed.). The splenius capitis originates in the spinous process of the first three thoracic verterbra, inserting laterally between the superior and inferior nuchal lines. 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