![]() Answer C: The mental space is potential space located bilaterally in the chin between the mentalis muscle and the platysma muscle. This is space is clinically relevant because infections, particularly those from mandibular molar tooth abscesses can track within this space and can lead to Ludwig’s angina, pain, swelling, and erythema of the lower jaw and upper neck. ![]() The space forms the region known as the submandibular triangle found in the anterior neck. Answer B: The submandibular space is another potential space of the head and neck that is found on the superficial aspect of the mylohyoid muscle. It is clinically relevant because a hemorrhage from oral surgery or dental abscess can drain into the buccal space leading to significant swelling and pain. The buccas space is formed by the contours of the masseter muscle, the zygomatic process of the axilla, and the angle of the mouth. A potential space is an area that is not a distinct cavity on its own, but can serve as a conduit for the transmission of fluid or pathogens to different areas of the body. Answer A: The buccal space is a fascial space in the head and neck that serves as a potential space in the cheek. The nasal cavity has numerous functions including cleaning inhaled air of pathogens and dust as well as serving as a drainage point for the paranasal sinuses. The nasal cavity is an air filled space that lies posterior to the nose and serves as the primary point of air entry into the body. The palatine bone is not directly connected or involved with the temporomandibular joint. The palatine bone is important for the oral cavity as it differentiates the oral cavity from the nasal cavity. The palatine bone is an important component of the oral cavity as it is the primary component forming the hard palate on the superior surface of the oral cavity.
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