Mandibular notch

Mandibular Notch

The Mandibular Notch (pronunciation: man-dib-yuh-lar notch) is a significant anatomical structure in the human skull.

Etymology

The term "Mandibular" is derived from the Latin word "mandibula" which means "jaw" or "jawbone". The term "notch" is derived from the Old English word "noc" which means "a cut or nick".

Definition

The Mandibular Notch, also known as the Sigmoide notch or the Sigmoid notch, is a deep concave structure located on the upper border of the lower jaw, between the condylar process and the coronoid process of the mandible.

Function

The Mandibular Notch serves as a passage for the masseteric nerve and masseteric vessels, which are essential for the functioning of the masseter muscle, a muscle that plays a crucial role in the process of mastication (chewing).

Related Terms

Mandible: The lower jawbone in mammals, which holds the lower teeth in place.
Condylar Process: The posterior process on the upper part of the mandible that articulates with the temporal bone to form the temporomandibular joint.
Coronoid Process: The anterior process on the upper part of the mandible that serves as the point of attachment for the temporalis muscle.
Masseter Muscle: A muscle that runs through the rear part of the cheek from the temporal bone to the lower jaw and is responsible for closing the jaw during chewing.
Masseteric Nerve: A nerve that innervates the masseter muscle.
Masseteric Vessels: Vessels that supply blood to the masseter muscle.