what is sternomastoid muscle
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CERVIX (cervices) Noun. 1. sternocleidomastoid muscle-one of two thick muscles running from the sternum and clavicle to the mastoid and occipital bone; turns head obliquely to the opposite side; when acting together they flex the neck and extend the head.musculus sternocleidomastoideus, sternocleido mastoideus, sternocleidomastoid.oun. 1. sternocleidomastoid muscle-one of two thick muscles running from the sternum and clavicle to the mastoid and occipital bone; turns head obliquely to the opposite side; when acting together they flex the neck and extend the head.
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- sternocleidomastoid: Either of two muscles of the neck that serve to flex and rotate the head.
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Platysma Muscle Platysma Muscle. The platysma muscle is a broad sheet of muscle arising from the pectoral (chest) and deltoid (shoulder) muscles and rises over the collarbone (clavicle), proceeding upward in a slanting manner along the sides of the neck.latysma Muscle. The platysma muscle is a broad sheet of muscle arising from the pectoral (chest) and deltoid (shoulder) muscles and rises over the collarbone (clavicle), proceeding upward in a slanting manner along the sides of the neck.
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Heron The herons are long-legged freshwater and coastal birds in the family Ardeidae, with 64 recognised species, some of which are referred to as egrets or bitterns rather than herons.
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Sternocleidomastoid Trigger Points: Masters of the Migraine The Sternocleidomastoid Trigger Points. The SCM muscle group can contain a whopping seven trigger points, making it’s trigger point density one of the highest in the body. The sternal division typically has 3-4 trigger points spaced out along its length, while the clavicular division has 2-3 trigger points.
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Sternocleidomastoid Muscle The sternocleidomastoid is a long muscle in the side of the neck that extends up from the thorax to the base of the skull behind the ear. When the sternocleidomastoid on one side contracts, the face is turned to the opposite side. When both muscles contract, the head is bent toward the chest. If the immovable end is fixed in position by other muscles, it can raise the sternum (breastbone) - an action which aids in forceful inhalation of air. The sternocleidomastoid is a long muscle in the side of the neck that extends up from the thorax to the base of the skull behind the ear.
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- Accessory nerve. The accessory nerve is a cranial nerve that supplies the sternocleidomastoid and trapezius muscles. It is considered the eleventh of twelve pairs of cranial nerves, or simply cranial nerve XI, as part of it was formerly believed to originate in the brain.
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Stylomastoid Foramen â Location and Structures passing through it Stylomastoid Foramen – Location and Structures passing through it. Stylomastoid Foramen is an opening located between the styloid and mastoid processes of the temporal bone, and it has some clinical significance in patients suffering from Bell’s Palsy.
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Sternocleidomastoid muscle The sternocleidomastoid originates from two locations: the manubrium of the sternum and the clavicle. It travels obliquely across the side of the neck and inserts at the mastoid process of the temporal bone of the skull. The sternocleidomastoid is thick and narrow at its centre, and broader and thinner at either end.
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Nursing I Week 2 A hematoma in one sternomastoid muscle, probably injured by intrauterine malposition, results in head tilt to one side and limited neck ROM to the opposite side. You will feel a firm, discrete, nontender mass in mid-muscle on the involved side.
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Deltoid Muscle The deltoid muscle is a rounded, triangular muscle located on the uppermost part of the arm and the top of the shoulder. It is named after the Greek letter delta, which is shaped like an equilateral triangle. The deltoid is attached by tendons to the skeleton at the clavicle (collarbone), scapula (shoulder blade), and humerus (upper arm bone).
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Thoracotomy Median sternotomy provides wide access to the mediastinum and is the incision of choice for most open-heart surgery and access to the anterior mediastinum. Posterolateral thoracotomy is an incision through an intercostal space on the back, and is often widened with rib spreaders.
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Sternohyoid The sternohyoid muscle is a long, thin muscle located along the entire length of the front of the neck. This muscle is connected by tendons — strong, flexible tissue that usually connects muscle to bone — to the hyoid bone at its top end, and connected to the sternum at its lower end.
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- The omohyoid muscle consists of two large triangles at each side of the neck united by a central tendon. It originates from the upper part of the scapula and runs upward along the neck behind the sternomastoid muscle and is inserted in the lower portion of the hyoid bone.he levator scapula lies along the back and side part of the neck. It originates deep in the side of the neck near the base of the skull, passes down and back and inserts in the scapula (shoulder blade). As the name implies, this muscle is the shoulder blade lifter.
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Deltoid Deltoid is a powerful muscle. It arises from a long strip of bone and converges triangularly to its insertion on the deltoid tuberosity. It covers the shoulder joint like a cape and its convex shape is due to the underlying upper end of the humerus.The anterior and posterior fibers are long, and in parallel bundles.eltoid is a powerful muscle. It arises from a long strip of bone and converges triangularly to its insertion on the deltoid tuberosity. It covers the shoulder joint like a cape and its convex shape is due to the underlying upper end of the humerus.
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Chapter 50: The neck Figure 50-1 Surface anatomy of the neck. The sternal and clavicular heads of the sternomastoid muscles are clearly visible. On each side, the anterior triangle of the neck is bounded by the anterior border of the sternomastoid, the anterior median line of the neck, and the lower border of the mandible.
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Sternum 1 The superior border of the sternum articulates with the manubrium through the manubriosternal joint. 2  The gap between the two is called the sternal angle or angulus Ludovici or angle of Louis, named after Antoine Louis. 3  The lateral border has articular depressions on which the 2nd to 7th costal cartilages are attached.
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Sternal Head of Sternocleidomastoid Muscle It's part of a long neck muscle called the sternocleidomastoid that goes from the mastoid process at the mastoid bone to the sternum and clavicle. This muscle rotates the head and neck. The sternal head comes from the upper part of the anterior ... Click to read more below.
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The Muscles Connecting the Upper Extremity to the Anterior and Lateral Thoracic Walls The muscles of the anterior and lateral thoracic regions are: Pectoralis major. Subclavius. Pectoralis minor. Serratus anterior. Superficial Fascia. The superficial fascia of the anterior thoracic region is continuous with that of the neck and upper extremity above, and of the abdomen below.It encloses the mamma and gives off numerous septa which pass into the gland, supporting its various lobes.t is possible that when the shoulders are fixed the lower fibers of the Serratus anterior may assist in raising and everting the ribs; but it is not the important inspiratory muscle it was formerly believed to be. TABLE OF CONTENTS I. Embryology II. Osteology III. Syndesmology IV.
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Sternal Head of Sternocleidomastoid Muscle It's part of a long neck muscle called the sternocleidomastoid that goes from the mastoid process at the mastoid bone to the sternum and clavicle. This muscle rotates the head and neck.
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Stylohyoid The muscle starts at the styloid process, a pointed part of the skull's temporal bone, which lies just below the ear and functions as an anchor point for a number of muscles. The stylohyoid is located just in front of the digastric muscle, which lifts the tongue back when swallowing. It is perforated (run through) by a facial tendon – the digastric tendon – before it slots into the hyoid bone. The stylohyoid muscle is given instructions by the facial nerve.
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Sternocleidomastoid Trigger Points Referred Pain and Symptoms and Causes Trigger points in the sternocleidomastoid can be activated by a tight or tense pectoralis major muscle as the clavicular head of the pec major pulls down on and forward on the clavicle which puts tension on the clavicular branch of the SCM.he SCM may become tight and cause painful stiffness in the neck forcing the head to tilt to one side. This may indicate the presence of trigger points, which may be responsible for frequent headaches or ear pain (mistaken for an ear infection).
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- The Sternocleidomastoid Muscle is one of the muscles of the anterior neck. Its main function it the lateral flexion of the head. Read all about it here.
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Congential Muscular Torticollis: An Overview Congenital muscular torticollis (CMT) is a musculoskeletal condition observed at birth or in infancy characterized by shortening of the sternocleidomastoid (SCM) muscle on the side of the neck. The infant will have a persistent head tilt to the involved side with the chin rotated toward the opposite shoulder.