🥇 ANATOMÍA DE LA FOSA TEMPORAL. ¡Explicación Sencilla!

Anatomy of the Temporal Fossa

Introduction to the Temporal Fossa

• The video introduces the anatomy of the temporal fossa, focusing on regions located laterally in the skull.

• Viewers are reminded that slides used in the video can be downloaded via a link provided in the description.

Importance of Understanding Skull Bones

• Knowledge of cranial bones is essential for understanding the temporal fossa; videos on individual bones like frontal, parietal, and temporal are available on the channel.

• The temporal fossa is defined as a hollow region formed by four bones, with its name derived from one of these bones—the temporal bone.

Key Anatomical Features

• The muscle occupying most of this area is called the temporal muscle; it could have been named after any of the four contributing bones but retains its anatomical designation.

• A significant feature discussed is the "temporal line," which curves from anterior to posterior and marks important boundaries within this region.

Detailed Description of Temporal Line

• The temporal line begins at the zygomatic process of the temporal bone and extends upward, crossing various sutures including coronal suture between frontal and parietal bones.

• This line ends at what is known as the supramastoid crest, continuing into another structure called zygomatic process.

Additional Lines and Their Significance

• Another important anatomical feature mentioned is the "infratemporal line," which runs parallel to the temporal line and serves as an insertion point for muscles.

• The infratemporal line crosses only two bones: frontal and temporal; it plays a crucial role in muscle attachment.

Limits of Temporal Fossa

• Discussion shifts towards defining limits; viewers are encouraged to subscribe for more content related to anatomy.

• The inferior limit is identified as being formed by the zygomatic arch, created by both zygomatic process from temporal bone and zygomatic bone itself.

Communication with Adjacent Regions

• It’s noted that medial to this arch lies another space called infratemporal fossa, which connects directly with temporalis fossa above it.

Anatomical Structures of the Temporal Fossa

Overview of Key Anatomical Features

• The anterior limit of the temporal fossa is defined by the malar bone's apophysis, which should be positioned lower than it currently appears in diagrams.

• The floor of the temporal fossa is formed by a confluence of four bones: frontal (anterior-superior), parietal (posterior-superior), temporal (posterior-inferior), and sphenoid (anterior-inferior).

• A notable groove exists for the deep temporal artery, indicating its relationship with these four bones that form the fossa's base.

Important Landmarks and Measurements

• The anatomical landmark known as "alterio" is located four centimeters above the zygomatic arch and behind the malar bone's physical structure.

• The roof of the temporal fossa consists of two layers: superficial temporal aponeurosis (green area) and deep temporal aponeurosis (blue area).

Contents Within the Temporal Fossa

• The majority of space within the fossa is occupied by the temporalis muscle, crucial for mastication, along with associated nerves that innervate this muscle.

• Superficial structures include muscles related to ear movement, such as the superior auricular muscle, situated above the aponeurosis.

Clinical Relevance

• Internal cranial views reveal grooves for the middle meningeal artery; understanding their location is vital due to their susceptibility to trauma.