The hyoid bone is an independent bone that does not contact any other bone and thus is not part of the skull (Figure 7. Paired bony lines on the posterior skull that extend laterally from the external occipital protuberance. The opening leads into a tunnel that runs down the length of the mandibular body. The mandible (lower jaw) joins with the skull at this site as part of the temporomandibular joint, which allows for movements of the mandible during opening and closing of the mouth. Articular tubercle—The smooth ridge located immediately anterior to the mandibular fossa. Art-labeling activity external view of the skull jerusalem. C) Estimate the cost of batteries. The cranium surrounds and protects the brain, which occupies the cranial cavity inside the skull. The upper portion of the nasal septum is formed by the perpendicular plate of the ethmoid bone and the lower portion is the vomer bone. The unpaired vomer bone, often referred to simply as the vomer, is triangular-shaped and forms the posterior-inferior part of the nasal septum (see Figure 7.
Internal acoustic meatus. It is divided at the midline by the sella turcica. Interior space of the skull that houses the brain. Content: frontal lobe of the cerebral cortex, olfactory bulb, olfactory tract, optic nerve, orbital gyri. Inferiorly, the mandible and the alveolar processes of the maxilla form the lower part of the anterior skull.
The paired bones are the maxilla, palatine, zygomatic, nasal, lacrimal, and inferior nasal conchae bones. Foramen ovale - mandibular nerve. The lateral aspect of the skull can be divided into three regions: - The facial region. Superior margin of the orbit. B) Calculate the energy requirements of the CD player.
The frontal sinus is located just above the eyebrows, within the frontal bone (see Figure 7. The lambdoid suture is located on the posterior skull and has an inverted V-shape. The posterior cranial fossa is the deepest fossa. Flattened upward projection from the anterior margin of the mandibular ramus. Thus, to numb the lower teeth prior to dental work, the dentist must inject anesthesia into the lateral wall of the oral cavity at a point prior to where this sensory nerve enters the mandibular foramen. SCUBA & Snorkelling. Skull Lab Prep Review Flashcards. Openings: foramen magnum, internal acoustic meatus, jugular foramen, anterior condylar (hypoglossal) canal. Joint that unites the parietal bone to the squamous portion of the temporal bone on the lateral side of the skull. One of several small, air-filled spaces located within the lateral sides of the ethmoid bone, between the orbit and upper nasal cavity. Also, the skull provides support for all of the facial structures. Sutures of the Skull.
The walls of each orbit include contributions from seven skull bones (Figure 7. Lateral extensions of the sphenoid bone that form the bony lip separating the anterior and middle cranial fossae. At the posterior apex of the orbit is the opening of the optic canal, which allows for passage of the optic nerve from the retina to the brain. One of the major muscles that pulls the mandible upward during biting and chewing, the masseter, arises from the zygomatic arch. The short temporal process of the zygomatic bone projects posteriorly, where it forms the anterior portion of the zygomatic arch (see Figure 7. Flat cartilage structure that forms the anterior portion of the nasal septum. The facial bones include 14 bones, with six paired bones and two unpaired bones. Skull: want to learn more about it? D) Calculate the cost per kilowatt-hour of a battery. Art-labeling activity external view of the skull is also. Architectural & Home Design.
Mental foramen—The opening located on each side of the anterior-lateral mandible, which is the exit site for a sensory nerve that supplies the chin. Small upward projection located at the midline in the floor of the anterior cranial fossa; formed by the ethmoid bone. Each parietal bone is also bounded anteriorly by the frontal bone at the coronal suture, inferiorly by the temporal bone at the squamous suture, and posteriorly by the occipital bone at the lambdoid suture. The sella turcica is a depression in the sphenoid bone. Art-labeling activity external view of the skull quizlet. It unites the right and left parietal bones with each other. Hypoglossal canal - hypoglossal nerve). From here, the canal runs anteromedially within the bony base of the skull.
Movements of the hyoid are coordinated with movements of the tongue, larynx, and pharynx during swallowing and speaking. Inside the cranial cavity, the frontal bone extends posteriorly. Superior orbital fissure—This large, irregular opening into the posterior orbit is located on the anterior wall of the middle cranial fossa, lateral to the optic canal and under the projecting margin of the lesser wing of the sphenoid bone. These are the paired parietal and temporal bones, plus the unpaired frontal, occipital, sphenoid, and ethmoid bones.
Paired bones that form the lateral, inferior portions of the skull, with squamous, mastoid, and petrous portions.
keepcovidfree.net, 2024