Your jaw is a set of bones that holds your teeth. It consists of two main parts. The upper part is the maxilla. It doesn’t move. The moveable lower part is called the mandible.
What are the names of the 2 jaw bones?
jaw, either of a pair of bones that form the framework of the mouth of vertebrate animals, usually containing teeth and including a movable lower jaw (mandible) and fixed upper jaw (maxilla).
What is your top jaw called?
The upper jaw holds the top teeth in place and supports muscles involved in chewing and facial expressions. It is a major bone in the face. Also called maxilla.
What is the part under your jaw called?
The submental space is a fascial space of the head and neck (sometimes also termed fascial spaces or tissue spaces). It is a potential space located between the mylohyoid muscle superiorly, the platysma muscle inferiorly, under the chin in the midline.
What is hyoid bone for?
hyoid bone, U-shaped bone 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. The primary function of the hyoid bone is to serve as an attachment structure for the tongue and for muscles in the floor of the oral cavity.
What is mandible bone?
The mandible is the largest bone in the human skull. It holds the lower teeth in place, it assists in mastication and forms the lower jawline. The mandible is composed of the body and the ramus and is located inferior to the maxilla.
What bones hold your teeth?
The alveolar bone is located on the jaw bones which hold the teeth. In humans, these bones that contain the teeth are the maxilla and the mandible. The curved portion of each alveolar process on the jaw is the alveolar arch.
What is the lump under my chin?
Lumps under the chin are usually harmless. Most of the time, they’re caused by swollen lymph nodes. This swelling is typically triggered by an infection. Cancer, cysts, abscesses, benign tumors, and other medical issues can also cause chin lumps.
What causes pain in my jaw bone?
Jaw pain, which sometimes radiates to other areas of the face, is a common concern. It can develop due to sinus infections, toothaches, issues with the blood vessels or nerves, or other conditions. Most types of jaw pain result from temporomandibular joint disorder.
What does a lump on your jawline mean?
A swollen lump under the chin can be troubling, but it is usually not a cause for concern. Swollen lymph nodes, cysts, and allergies may cause these lumps to form. A lump can appear anywhere in the soft area under the chin and jawline. The lump may be large, small, firm, or soft, depending on the cause.
Do females have a hyoid bone?
Statistical analysis of these data shows that there is a continuous distribution of hyoid bone shapes and the most bones are highly symmetrical. Based on smaller samples, previous researchers have suggested that non-fusion is more common in women than in men.
Can you break your hyoid bone?
Injuries to the hyoid bone are rare. The most commonly reported injury is fracture, yet this is often a post-mortem finding, with an incidence of between 17–76 %, in victims of strangulation and hanging. In survivors it is more often associated with a trauma other than manual strangulation.
Can you dislocate your hyoid bone?
Strong clinical suspicion based on the mechanism of the injury is the key to diagnosis. Due to their low incidence, hyoid bone fractures/dislocations can be easily missed. Symptoms vary from mild neck pain to severe, acute airway compromise, which may prove fatal.
