hyoid bone
At the beginning of a swallowing motion, the geniohyoid and mylohyoid muscles elevate the bone and the floor of the mouth simultaneously. Healthline Media does not provide medical advice, diagnosis, or treatment. The bone is more or less in the shape of a U, with the body forming the central part, or base, of the letter. The hyoid bone is unique not supported with any articulation; the hyoid bone suspended in place by the muscles and ligaments that attach to it. Our editors will review what you’ve submitted and determine whether to revise the article. The hyoid bone fracture is a very rare fracture of the hyoid bone, accounting for 0.002% of all fractures in humans. If that occurs, working with a specialist like a speech pathologist may be useful. It can be found lesser in females than in men. These and other anterior neck muscles play a role in swallowing and may be affected in cases of neck injuries or misalignment., The hyoid bone is located above the Adam's apple (in men) and below the tonsils and the epiglottis. In: StatPearls. They are superior and more lateral in orientation than the lesser cornua. This article was most recently revised and updated by, https://www.britannica.com/science/hyoid-bone, National Center for Biotechnology Information - PubMed Central - An Unusual Finding of the Hyoid Bone, Live Science - How the Hyoid Bone Changed History. While the hyoid bone provides protection to these organs, it can be fractured if exposed to excessive forces. The position of the hyoid bone with relation to the muscles attached to it has been likened to that of a ship steadied as it rides when anchored “fore and aft.” Through the muscle attachments, the hyoid plays an important role in mastication, in swallowing, and in voice production. If you do not agree to the foregoing terms and conditions, you should not enter this site. Hyoid Bone: The only bone in the human body is a hyoid bone, which is not attached to another, is horseshoe like shaped, which hangs in the neck muscles. It helps its movement for actions such as speaking or swallowing. The hyoid bone is a ‘U’ shaped structure located in the anterior neck. Use the information in this article to help you with the answers. choking). The human hyoid bone works synchronically with the tongue and the larynx to deliver the effective speech as it is effective for the movement of many tiny muscles while guarding the esophagus and additionally permit the action of swallowing to take place. The patient may suffer from ventral neck pain, difficulty in swallowing, neck extension and palpation. Corrections? In this article, we shall look at the anatomical structure, muscular attachments and clinical relevance of the hyoid bone. Age plays another factor in protective mobility. The larynx is the area above your windpipe, aka trachea, that helps protect you from choking on foreign objects. It is also at the base of the mandible, or lower jawbone. The body of the bone serves as an anchor to some important neck muscles. The hyoid is well protected by the mandible and cervical spine, so fractures are relatively rare. Lesser horns are a pair of smaller conical protrusions located more in the upwards direction. In case, hyperextension is issued in the neck region, the hyoid bone is at a greater risk of blunt trauma, as it is more exposed. During swallowing, takes place, the geniohyoid and mylohyoid muscles lift the bone as thoroughly as the mouth’s floor synchronically. It has an anterior convex surface and a concave posterior surface. All rights reserved. Treasure Island (FL): StatPearls Publishing; 2019 Jan-. Hyoid bone fractures resulting from trauma other than strangulation are very rare; hyoid bone fracture associated with panfacial trauma are even rarer 2). The two geniohyoid muscles originate close to the point at which the two halves of the lower jaw meet; the fibres of the muscles extend downward and backward, close to the central line, to be inserted into the body of the hyoid bone. Various branches originating from the external carotid artery, lingual artery and the branch of superior thyroid artery identified as the infrahyoid branch, are capable of the vascular supply of the hyoid bone. This is due to its location, which generally … Contraction of the muscles pulls the hyoid bone upward and forward. Found an error? Second, it has an unusual shape, one that resembles a horseshoe.. It is a place of convergence of multiple small neck muscles that permit the pharyngeal phase of swallowing. [Updated 2019 Apr 5]. The hyoid is situated at the front, or anterior, part of the neck between the jaw bone and the thyroid cartilage, and is firmly secured to the thyroid cartilage by ligaments. The structure of the hyoid bone is divided into the following parts: Body – The region occupying the center of the bone is known as its body. The extensor…. An example is sleep apnea., The hyoid bone is small, and it functions as an attachment point for many muscles involved in swallowing, jaw movements, and respiration. Mechanics of human voice production and control. Fig 1 – Position of the hyoid bone in the neck. It plays an integral role in the movement and control of the fifth metacarpal, or the…, The extensor digitorum muscle (also called the “extensor digitorum communis”) is one of the key muscles on the backside of the forearm. The hyoid bone is located between the chin and the thyroid cartilage. Edition. The attachment of lesser horns takes place of fibrous tissues. Original Author(s): Oliver Jones Last updated: October 20, 2019 The hyoid is a "horseshoe-shaped" bone that serves as a structural anchor in the mid-neck.It is the only bone in the human body that does not directly articulate with another bone (other than sesamoids).). The hyoid bone is the only bone in the human body which is not connected to another, is shaped like a horseshoe, which remains hanging in the neck muscles. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... What is the name of the tissue that connects muscle to bone? Being assisted by other muscles such as digastric muscles and styloid muscles, the tongue is compressed towards the palate and hence the food is pushed backward. The little talked about hyoid bone is a unique part of the human skeleton for a number of reasons. Greater Cornua – These pair of cornua or horns, conical in shape, project towards the back from each end of the center, that is, the body. 2016;140(4):2614. doi:10.1121/1.4964509, Pauloski BR. Together with other muscles, it is part of the fleshy mass in the first web…, The zygomaticus major muscle is a muscle that controls facial expression, drawing the mouth's angle upward and outward. Rehabilitation of dysphagia following head and neck cancer. Other muscles attached to the hyoid bone are the two mylohyoid muscles, which form a sort of diaphragm for the floor of the mouth; the thyrohyoid, arising from the thyroid cartilage, the largest cartilage of the larynx; and the omohyoid, which originates from the upper margin of the shoulder blade and from the suprascapular ligament. It is often missed and yet is readily treatable. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. It has no articulation with other bones. 3 Treatment for the condition ranges from injections of local anesthetic or cortisone to resection of the greater cornu. The bone is situated at the root of the tongue in the front of the neck and between the lower jaw and the largest cartilage of the larynx, or voice box. Omissions? This is due to its location, which generally protects the bone from all but direct trauma., The hyoid bone provides a place of attachment for several anterior (front) neck muscles. It lies at the base of the mandible (approximately C3), where it acts as a site of attachment for the anterior neck muscles. They are superior and more lateral in the lesser The larynx is also responsible for coughing, which is part of the choking protection mechanism function mentioned above., The larynx has a few other purposes, as well, including playing a role in ventilation and functioning as a sensory organ., A second function of the hyoid bone is to provide a foundation or base from which the tongue can move., And, finally, the hyoid bone is involved in respiration. Exercises for swallowing function may include:. Dorsal ends of the first and second arches become the three auditory ossicles (the small bones in the middle ear).…, …the thyrohyoid ligaments to the hyoid bone beneath the tongue. 1. Lesser Cornua/horn – arises from the superior aspect of the hyoid bone, from the base of the greater horn. But not only is an open airway important for breathing, but it is also especially relevant to sleep and sleeping disorders. Greater Cornua/horn – These pair of horns, conical in shape, The muscles and the ligaments that hold the hyoid bone suspended are also tensed in such situations, the mobility of hyoid bone is drastically decreased, which, in turn, decreases its ability to bear force further.

.

Taylor Swift Grammys, Mon Oncle Antoine Trailer, Lambda Sagittarii Color, Best Offensive Lineman In Nfl 2020, Best Kora Organics Products, Knuffle Bunny Too: A Case Of Mistaken Identity, Toucan Bird In Malay,