foramina

Transverse Foramen

Transverse Foramen The structure indicated is the transverse foramen of a cervical vertebra. There are 33 vertebrae which make up the spinal column: 7 cervical 12 thoracic 5 lumbar 5 fused sacral vertebrae 3-4 fused coccygeal vertebrae The typical vertebra consists of the following features: Vertebral body Vertebral arch (neural arch) consisting of lamina and pedicle Spinous process Transverse process Vertebral foramen (collectively form vertebral canal) Superior and inferior articular processes Superior and inferior vertebral notches Transverse foramina are only present in the cervical vertebrae. These foramina allow the passage of the vertebral artery and vein. The vertebral arteries arise …

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transverse foramen

Foramen Spinosum

Foramen Spinosum The structure indicated is the foramen spinosum. The floor of the cranial cavity consists of three cranial fossae: Anterior cranial fossa Middle cranial fossa Posterior cranial fossa There are several holes in the floor of the cranial cavity which allow structures to enter and exit the skull, known as foramen. Foramen (foramina is plural), are holes in the human body which allow other structures to pass through. In the case of the skull, foramina permit the passage of arteries, veins and nerves. The middle cranial fossa consists of the following foramina: Superior orbital fissure Foramen rotundum Foramen ovale …

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Foramen Lacerum

Foramen Lacerum The structure indicated is the foramen lacerum. The floor of the cranial cavity consists of three cranial fossae: Anterior cranial fossa Middle cranial fossa Posterior cranial fossa There are several holes in the floor of the cranial cavity which allow structures to enter and exit the skull, known as foramen. Foramen (foramina is plural), are holes in the human body which allow other structures to pass through. In the case of the skull, foramina permit the passage of arteries, veins and nerves. The middle cranial fossa consists of the following foramina: Superior orbital fissure Foramen rotundum Foramen ovale …

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foramen lacerum

Infraorbital Foramen

Infraorbital Foramen The structure indicated is the infraorbital foramen of the skull. The infraorbital foramen are a pair of external foramina of the skull which are visible anteriorly on the skull. Foramen (foramina is plural), are holes in the human body which allow other structures to pass through. In the case of the skull, foramina permit the passage of arteries, veins and nerves. There are three pairs of foramina visible from an anterior view of the skull: Infraorbital foramen Supraorbital foramen Mental foramen The infraorbital foramen is located in the maxillary bone of the skull just below the inferior margin …

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Infraorbital Foramen