The term "mandibular fossa" refers to the depression in the temporal bone where the mandible, or jaw bone, articulates with the skull. The correct spelling of this word can be explained using the International Phonetic Alphabet (IPA) as [mænˈdɪbjʊlər ˈfɑːsə]. The first part of the word "mandibular" is pronounced with the "æ" sound as in "bat," followed by the "d" sound and the "j" sound as in "jam." The second word "fossa" is pronounced with the "ɑ" sound as in "father" and the "s" sound.
The mandibular fossa is a term used in anatomy to describe a specific depression or concavity in the temporal bone, located in the skull. It is an important structure that is primarily associated with the functioning of the temporomandibular joint (TMJ). The mandibular fossa is situated on each side of the skull, just in front of the external auditory meatus.
The mandibular fossa serves as the articulating surface where the condyle of the mandible, also known as the lower jawbone, connects with the temporal bone in the skull. This joint allows for the opening and closing of the mouth, as well as the lateral movements of the mandible.
This depression is lined with fibrocartilage, which helps to reduce friction between the bones during jaw movements. The mandibular fossa also provides stability and support to the mandible, allowing for smooth and controlled jaw motion.
In summary, the mandibular fossa is a concavity in the temporal bone of the skull, where the condyle of the mandible connects to form the temporomandibular joint. Its main functions include enabling jaw movements such as opening and closing the mouth, as well as providing stability and support to the lower jawbone.
The word "mandibular" comes from the Latin "mandibula" which means "jaw". It is derived from the verb "mandere" which means "to chew". The term "fossa" is also borrowed from Latin, meaning "a trench or pit". Therefore, "mandibular fossa" refers to the pit or groove in the temporal bone of the skull into which the mandible (jawbone) fits.