What is foramen spinosum?
The foramen spinosum is a small circular foramen present posterolateral to the foramen ovale in the greater wing of the sphenoid. The greater wing of the sphenoid is a bony projection arising from both sides of the sphenoid body forming a part of the floor of the middle cranial fossa.
Why is it called a foramen spinosum?
The foramen spinosum was first described by the Danish anatomist Jakob Benignus Winslow in the 18th century. It is so-named because of its relationship to the spinous process of the greater wing of the sphenoid bone.
What is in foramen spinosum skull?
The foramen spinosum (plural: foramina spinosa) is located in the posteromedial part of greater wing of sphenoid bone posterolateral to foramen ovale which connects the middle cranial fossa with the infratemporal fossa. It transmits the middle meningeal artery, middle meningeal vein, and (usually) the nervus spinosus.
What artery travels through foramen spinosum?
Middle meningeal artery. The middle meningeal artery normally arises from the first or mandibular segment of the maxillary artery, just behind the condylar process of the mandible, and enters the skull through the foramen spinosum (see Fig.
What nerve passes through foramen rotundum?
The maxillary nerve (V2) passes through the foramen rotundum and into the infraorbital canal, where, at the pterygopalatine fossa, it branches into the pterygopalatine ganglion, with parasympathetic and sensory branches to the paranasal sinuses.
What nerve passes through foramen Rotundum?
What goes through the foramen rotundum?
The Maxillary Nerve (V2) The maxillary nerve (V2) passes through the foramen rotundum and into the infraorbital canal, where, at the pterygopalatine fossa, it branches into the pterygopalatine ganglion, with parasympathetic and sensory branches to the paranasal sinuses.
What nerve passes through the Stylomastoid foramen?
The facial nerve exits the skull from the stylomastoid foramen and passes obliquely inferiorly and laterally until it enters the parotid gland. The common facial divisions of the nerve are the temporal, zygomatic, buccal, marginal mandibular, and cervical divisions.
What is foramen lacerum for?
The foramen lacerum is filled with connective tissue and transmits the small meningeal branches of the ascending pharyngeal artery and emissary veins from the cavernous sinus to the pterygoid venous plexus. The internal carotid artery passes along its superior surface but does not traverse it.
What passes through each foramen?
In anatomy, a foramen is any opening. Foramina inside the body of humans and other animals typically allow muscles, nerves, arteries, veins, or other structures to connect one part of the body with another. The human skull has numerous foramina through which cranial nerves, arteries, veins, and other structures pass.
What is the purpose of foramen rotundum?
Function. The foramen rotundum allows the passage of the maxillary nerve (V2), a branch of the trigeminal nerve. It also allows the passage of the artery of the foramen rotundum and an emissary vein.