|
Zygomatic Orbital Foramen
The zygomatico-orbital foramina are two canals in the skull, that allow nerves to pass through. The orifices are seen on the orbital process of the zygomatic bone In the human skull, the zygomatic bone (from ), also called cheekbone or malar bone, is a paired irregular bone, situated at the upper and lateral part of the face and forming part of the lateral wall and floor of the orbit, of the temporal fos .... One of these canals opens into the temporal fossa, the other on the malar surface of the bone. The former transmits the zygomaticotemporal, the latter the zygomaticofacial nerve. References External links Foramina of the skull {{musculoskeletal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zygomatic Bone
In the human skull, the zygomatic bone (from ), also called cheekbone or malar bone, is a paired irregular bone, situated at the upper and lateral part of the face and forming part of the lateral wall and floor of the orbit, of the temporal fossa and the infratemporal fossa. It presents a malar and a temporal surface; four processes (the frontosphenoidal, orbital, maxillary, and temporal), and four borders. Etymology The term ''zygomatic'' derives from the Ancient Greek , ''zygoma'', meaning "yoke". The zygomatic bone is occasionally referred to as the zygoma, but this term may also refer to the zygomatic arch. Structure Surfaces The ''malar surface'' is convex and perforated near its center by a small aperture, the zygomaticofacial foramen, for the passage of the zygomaticofacial nerve and vessels; below this foramen is a slight elevation, which gives origin to the zygomaticus muscle. The ''temporal surface'', directed posteriorly and medially, is concave, prese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheek
The cheeks () constitute the area of the face below the eyes and between the nose and the left or right ear. ''Buccal'' means relating to the cheek. In humans, the region is innervated by the buccal nerve. The area between the inside of the cheek and the teeth and gums is called the vestibule or ''buccal'' pouch or ''buccal'' cavity and forms part of the mouth. In other animals, the cheeks may also be referred to as " jowls". Structure Cheeks are fleshy in humans, the skin being suspended by the chin and the jaws, and forming the lateral wall of the human mouth, visibly touching the cheekbone below the eye. The inside of the cheek is lined with a mucous membrane (''buccal'' mucosa, part of the oral mucosa). During mastication (chewing), the cheeks and tongue between them serve to keep the food between the teeth. Clinical significance The cheek is the most common location from which a DNA sample can be taken. (Some saliva is collected from inside the mouth, e.g. using a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canal (anatomy)
{{notability, date=April 2024 In anatomy, a canal (or ''canalis'' in Latin) is a tubular passage or channel which connects different regions of the body. Examples Cranial region * Alveolar canals * Carotid canal * Facial canal * Greater palatine canal * Incisive canals * Infraorbital canal * Mandibular canal * Optic canal * Palatovaginal canal * Pterygoid canal Abdominal region * Inguinal canal Pelvic region * Anal canal * Cervical canal * Pudendal canal Upper extremities * Suprascapular canal * Carpal canal * Ulnar canal * Radial canal Lower extremities * Adductor canal * Femoral canal * Obturator canal See also * Foramen In anatomy and osteology, a foramen (; : foramina, or foramens ; ) is an opening or enclosed gap within the dense connective tissue (bones and deep fasciae) of extant and extinct amniote animals, typically to allow passage of nerves, artery, ... References *''Dorland's Illustrated Medical Dictionary'', 27th ed. 1988 W.B. Saunders Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skull
The skull, or cranium, is typically a bony enclosure around the brain of a vertebrate. In some fish, and amphibians, the skull is of cartilage. The skull is at the head end of the vertebrate. In the human, the skull comprises two prominent parts: the neurocranium and the facial skeleton, which evolved from the first pharyngeal arch. The skull forms the frontmost portion of the axial skeleton and is a product of cephalization and vesicular enlargement of the brain, with several special senses structures such as the eyes, ears, nose, tongue and, in fish, specialized tactile organs such as barbels near the mouth. The skull is composed of three types of bone: cranial bones, facial bones and ossicles, which is made up of a number of fused flat and irregular bones. The cranial bones are joined at firm fibrous junctions called sutures and contains many foramina, fossae, processes, and sinuses. In zoology, the openings in the skull are called fenestrae, the most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temporal Fossa
The temporal fossa is a fossa (shallow depression) on the side of the skull bounded by the temporal lines above, and the zygomatic arch below. Its floor is formed by the outer surfaces of four bones of the skull. The fossa is filled by the temporalis muscle. Anatomy Boundaries * Medial/floor: frontal bone, parietal bone, ( squamous part of) temporal bone, and sphenoid bone The sphenoid bone is an unpaired bone of the neurocranium. It is situated in the middle of the skull towards the front, in front of the basilar part of occipital bone, basilar part of the occipital bone. The sphenoid bone is one of the seven bon .... The floor of the fossa features the pterion (the junction of these four bones). * Lateral/roof: temporal fascia. * Anterior: (posterior surface of) the frontal process of zygomatic bone, (the posterior surface of) the zygomatic process of frontal bone, and the maxilla. * Superior: Pair of temporal lines (superior and inferior temporal lines) that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zygomaticotemporal Nerve
The zygomaticotemporal nerve (zygomaticotemporal branch, temporal branch) is a cutaneous ( sensory) nerve of the head. It is a branch of the zygomatic nerve (itself a branch of the maxillary nerve (CN V2)). It arises in the orbit and exits the orbit through the zygomaticotemporal foramen in the zygomatic bone to enter the temporal fossa. It is distributed to the skin of the side of the forehead. It also contains a parasympathetic secretomotor component for the lacrimal gland which it confers to the lacrimal nerve (which then delivers it to the gland). Structure Origin The zygomaticotemporal nerve is a branch of the zygomatic nerve. Course It passes along the lateral wall of the orbit in a groove in the zygomatic bone. It passes through the zygomaticotemporal foramen of the zygomatic bone to emerge (at the anterior portion of) the temporal fossa. In the temporal fossa, it passes superior-ward between the two layers of the temporal fascia, between the temporal bone an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zygomaticofacial Nerve
The zygomaticofacial nerve (or zygomaticofacial branch of zygomatic nerve or malar branch of zygomatic nerve) is a cutaneous ( sensory) branch of the maxillary nerve (CN V2) that arises within the orbit. The zygomaticofacial nerve penetrates the inferolateral angle of the orbit, emerging into the face through the zygomaticofacial foramen, then penetrates the orbicularis oculi muscle to reach and innervate the skin of the prominence of the cheek. Anatomy Communications The zygomaticofacial nerve forms a nerve plexus A nerve plexus is a plexus (branching network) of intersecting nerves. A nerve plexus is composed of afferent and efferent fibers that arise from the merging of the anterior rami of spinal nerves and blood vessels. There are five spinal nerve ple ... with the zygomatic branches of facial nerve (CN VII), and the inferior palpebral branches of maxillary nerve (V2). Variation The nerve may sometimes be absent. References External links * * Maxill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
