🥇 CAVIDAD BUCAL, LABIOS y MEJILLAS. -Anatomía- ¡Explicación Sencilla!

Anatomy of the Oral Cavity

Introduction to the Oral Cavity

• The video introduces the anatomy of the oral cavity, also known as the mouth, presented by Juan José Sánchez.

• It mentions that there will be separate videos on related topics such as the palate and tongue.

Structure of the Oral Cavity

• The oral cavity is divided into two parts:

• Vestibule: The space outside the teeth, bounded by lips and cheeks.

• Oral Cavity Proper: The area enclosed by teeth where the tongue and palate are located.

Understanding Vestibule and Oral Cavity

• The vestibule is described as a small or "virtual" cavity that exists between closed lips and teeth.

• Visual aids will be used to clarify these anatomical divisions further in subsequent images.

Importance of Subscription

• Viewers are encouraged to subscribe for access to over 200 anatomical videos available on the channel.

Detailed Anatomy of Vestibule

• The external limit of the vestibule consists of lips and cheeks, while its internal limit comprises teeth and gums.

• A significant structure within this area is identified as the parotid papilla (or caruncula), which marks where saliva from the parotid gland enters.

Parotid Duct Location

• The parotid duct empties into the vestibular portion near the upper second molar; viewers are advised to check their own anatomy in a mirror.

• Communication between vestibule and oral cavity occurs behind molars, specifically at either second or third molars depending on dental status.

Limits of Oral Cavity

• Anterolateral limits include alveolar structures (teeth and gums), separating it from vestibular areas.

Anatomy of the Oral Cavity

Overview of the Oral Cavity Structure

• The oral cavity is defined by its boundaries: anteriorly by the palatoglossal arches and posteriorly by the oropharyngeal isthmus, which leads to the pharynx.

• The oropharyngeal isthmus serves as a virtual space where part of the tongue resides within the oral cavity while another part extends into the oropharynx.

• The anatomy of the palate is extensive; further details are provided in a separate video dedicated to this topic.

• The floor of the mouth consists mainly of mylohyoid muscles, with anatomical structures visible when raising the tongue, including the frenulum and sublingual papillae.

Sublingual and Submandibular Anatomy

• Wharton's duct opens at submandibular papillae on either side of the frenulum, indicating drainage from both submandibular and sublingual glands.

• Sublingual folds are present above sublingual glands, housing numerous small ducts for saliva drainage.

Lips and Their Anatomical Features

• The upper and lower lips contain connective tissue filled with orbicularis oris muscle; they meet at labial commissures.

• A depression known as philtrum exists on the skin surface between both lips, contributing to their structure.

Mucosal Structure and Cheek Anatomy

• The entire oral cavity is lined with mucosa that continues from lips over gums, creating a waterproof barrier in vestibule areas.

• Cheeks consist primarily of buccinator muscles perforated by parotid ducts for saliva flow; minor salivary glands also exist along cheek mucosa.

Additional Facial Structures

• Buccal fat pads (Bichat's fat pads), often removed during cosmetic procedures like bichectomy, contribute to facial contouring.

Buccinator Muscle and Its Anatomical Context

Overview of the Buccinator Muscle

• The buccinator muscle is located in the depths of the oral cavity, ending at a structure known as the mandibular pterygo raphe or maxillary pterygo raphe.

• This raphe serves to separate the buccinator muscle from the superior constrictor muscle of the pharynx, indicating its anatomical significance.

• The termination point of the buccinator muscle is described from a deep anatomical perspective, highlighting its relevance in understanding oral cavity structures.

Conclusion and Future Content

• The video concludes with a general overview of various components within the oral cavity, including lips, cheeks, tongue depths, and palate.