It then passes through the orbit in the infraorbital canal, exits through the infraorbital foramen, and gives rise to three cutaneous branches: the zygomaticotemporal, zygomaticofacial, and infraorbital nerves.
What is the purpose of infraorbital foramen?
In human anatomy, the infraorbital foramen is an opening in the maxillary bone of the skull located below the infraorbital margin of the orbit. It transmits the infraorbital artery and vein, and the infraorbital nerve, a branch of the maxillary nerve.
What does the infraorbital foramen articulate with?
The infraorbital rim extends medially and upward to form the frontal process of the maxilla. The frontal process articulates superiorly with the frontal bone, medially with the nasal bone, and posteriorly with the lacrimal bone. It has a smooth orbital surface that forms the vertical anterior lacrimal crest.
What is the infraorbital sulcus and what does it become?
It runs anteriorly along the floor of the orbit in the infraorbital groove to the infraorbital canal of the maxilla. … After traversing the canal it emerges onto the anterior surface of the maxilla through the infraorbital foramen. Here, it divides into its terminal branches, palpebral, nasal and superior labial.
What foramen does the infraorbital nerve pass through?
The infraorbital nerve enters the orbit via the infraorbital fissure and passes along the floor of that structure in the infraorbital groove. It exits the skull through the infraorbital foramen, innervating the lower eyelid, lateral nose, and part of the superior lip.
Which bone belongs to the infraorbital foramen?
The infraorbital foramen is located in the maxillary bone. It is the anterior opening of the infraorbital canal, which is the anterior continuation of the infraorbital groove, which course through the floor of the orbit.
How do you get infraorbital foramen?
Step-by-Step Procedure
- Palpate the infraorbital foramen on the lateral aspect of the maxilla, rostral to the medial canthus of the eye.
- In larger animals, the infraorbital neurovascular bundle can be palpated under the skin as it leaves the infraorbital canal.
Which of the following bones contains the infraorbital foramen quizlet?
The infraorbital foramen allows blood vessels and nerves to pass through the maxilla. The sphenoid bone contains the foramen rotundum and superior orbital fissure.
Where does the infraorbital artery pass through?
The infraorbital artery is a branch of the third part of the maxillary artery. It runs through the inferior orbital fissure, orbit, infraorbital canal then the infraorbital foramen. Here it gives off the anterior superior alveolar artery which supplies the anterior teeth and the anterior part of the maxillary sinus.
Where does infraorbital artery come from?
The infraorbital artery arises from the pterygopalatine part of the maxillary artery. The artery proceeds through the infraorbital foramen and emerges on the face to supply the inferior palpebral area, the lateral side of the nose, and the superior labial area.
What does infraorbital mean?
Definition of ‘infraorbital’
1. (of a rocket, missile, etc) having a flight path that is less than one complete orbit of the earth or other celestial body. 2. anatomy. situated beneath the orbit of the eye.
What are the main contents of the orbit?
The orbital contents comprise the eye, the orbital and retrobulbar fascia, extraocular muscles, cranial nerves II, III, IV, V, and VI, blood vessels, fat, the lacrimal gland with its sac and duct, the eyelids, medial and lateral palpebral ligaments, check ligaments, the suspensory ligament, septum, ciliary ganglion and …
Where is infraorbital area?
The infraorbital region is a component of the midface and can be defined as the anatomical area between the nasal aperture and the zygomatic bone below the inferior rim of the orbit and above the roots of the maxillary canine and premolars (Fig. 6.1).
Are there two infraorbital foramen?
It is evident that the majority of infraorbital foramina are located lateral to the SOF/N (93.0% on the right side and 91.1% on the left side). Both IOF and SOF/N were located in the same vertical plane in 4.7% on the right side and in 8.9% on the left side of the total skulls.
What passes through the superior orbital fissure?
This fissure, which separates the greater and lesser wings of the sphenoid and lies between the optic foramen and the foramen rotundum, provides passage to the three motor nerves to the extraocular muscles of the orbit: oculomotor nerve (CN III), trochlear nerve (CN IV), and abducens nerve (CN VI).
What passes 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 passes through the Zygomaticofacial foramen?
The zygomaticofacial foramen is a small foramen in the mid lateral surface of the zygomatic bone that transmits the zygomaticofacial nerve (a branch of the zygomatic nerve from the maxillary division of the trigeminal nerve) and zygomaticofacial vessels.
Where is optic foramen?
The optic foramen, the opening through which the optic nerve runs back into the brain and the large ophthalmic artery enters the orbit, is at the nasal side of the apex, the superior orbital fissure is a larger hole through which pass large veins and nerves.…
How deep is the infraorbital artery?
Intraosseous Anastomosis
The vertical component of the lateral-access wall for the sinus graft often severs the intraosseous anastomoses of the posterior alveolar artery and infraorbital artery, which is on average approximately 15 to 20 mm from the crest of a dentate ridge.
Where do you give an infraorbital nerve block?
Infraorbital Nerve Block – YouTube
What is the function of the axial skeleton quizlet?
The axial skeleton serves as a framework that supports and protects organs, provides and extensive surface area for muscle attachment, and it also stabilizes and positions parts of the appendicular skeleton that support the limbs.
What are the two functions of fontanels?
Functionally, the fontanels serve as spacers for the growth of neighboring skull bones and provide some flexibility to the fetal skull, allowing the skull to change shape as it passes through the birth canal and later permitting rapid growth of the brain during infancy.
What are the functions of the axial skeleton?
The Axial Skeleton
It serves to protect the brain, spinal cord, heart, and lungs. It also serves as the attachment site for muscles that move the head, neck, and back, and for muscles that act across the shoulder and hip joints to move their corresponding limbs.
What does the infraorbital artery supply blood to?
The posterior superior alveolar artery supplies the lower mandible, molar, premolars, and surrounding gingiva. The infraorbital artery supplies the lower eyelid and upper lip. The anterior superior alveolar artery supplies the incisors and canines. [2]
How does maxillary artery enter the skull?
The maxillary artery, the larger of the two terminal branches of the external carotid artery, arises behind the neck of the mandible, and is at first imbedded in the substance of the parotid gland, it passes forward between the ramus of the mandible and the sphenomandibular ligament, and then runs, either superficial …
What does the superior alveolar artery supply?
It supplies the upper premolar and molar teeth as well as the maxillary sinus. It accompanies the posterior superior alveolar branches of the maxillary nerve on their way to innervate those same teeth.
What is pharyngeal artery?
The ascending pharyngeal artery is a small but important artery that supplies multiple cranial nerves and anastomotic channels to the anterior and posterior cerebral circulations. Several disease processes in the head and neck involve the ascending pharyngeal artery.
What are the branches of the infraorbital artery?
In most cases, the infraorbital artery was located in the middle (73.8%) and superficial to the ION bundle (73.8%) at its exit from the infraorbital canal. The ION produced four main branches, the inferior palpebral, internal nasal, external nasal, and superior labial branches.
What is an infraorbital canal?
The infraorbital canal is the large passage, entirely within the maxilla, at the anterior end of the zygomatic arch. From: The Dissection of Vertebrates (Second Edition), 2011.
What does infra prefix mean?
prefix. Definition of infra- (Entry 2 of 2) 1 : below infrahuman infrasonic. 2 : within infraspecific. 3 : below in a scale or series infrared.
What does supra mean in medical terms?
Supra = above (Latin) Suprapubic region = area found above the pubic region (N.B. also known as the hypogastric region.) Suprarenal = above the kidney.
What is the function of orbit?
The orbits are bony structures of the skull that house the globe, extraocular muscles, nerves, blood vessels, lacrimal apparatus, and adipose tissue. Each orbit protects the globe, while the supportive tissues allow the globe to move in three dimensions (horizontal, vertical, and torsional).
How deep is an eye socket?
How deep is an eye socket? This distance varied from 4.4 to 5.7 cm in males (mean 5.024, SD 0.272) and from 4.5 to 5.5 cm in females (mean 4.9, SD 0.204).
What is the orbit bone?
The “orbit” or “socket” of the eye encases the eyeball and protects its place in the skull. … There are seven orbital bones that make up this structure: the frontal, sphenoid, zygomatic, ethmoid, lacrimal, palatine and maxilla bones.
What teeth does the infraorbital nerve innervate?
The infraorbital nerve, a purely sensory branch of the trigeminal nerve (V), courses through the infraorbital canal before entering the face via the infraorbital foramen. It innervates the maxillary cheek teeth, the skin of the nose, skin and mucosa of the muzzle, and the upper lip.
What is infraorbital nerve block?
The infraorbital nerve block anesthetizes the anterior and middle maxillary alveolar nerves, inferior palpebral, lateral nasal, and superior labial. This also includes the maxillary incisors, canines, and premolars, as well as their vestibular osseous support and the soft tissues which cover them.
Is Infratrochlear a nerve?
The infratrochlear nerve provides sensory innervation to the skin of the inferior medial canthus and lateral nose, conjunctiva, caruncle, and lacrimal sac. The lacrimal nerve supplies the lacrimal gland, the lateral upper lid and conjunctiva.
What does foramen mean in anatomy?
The foramen is the bony hollow archway created by pedicles of adjacent vertebrae, creating a passageway through which all spinal nerve roots run. As a spinal nerve branches from the spinal cord, it exits through this opening and travels to organs, muscles and sensory structures of the body.
What travels through the foramen ovale?
The important structures which pass through it are the mandibular nerve, the accessory meningeal artery, the lesser superficial petrosal nerve and the emmissary vein [1]. This is the one of the important foramina which are situated at the transition zone between the intracranial and the extracranial structures [2].
What cranial nerve passes through the foramen ovale?
Foramina and fissures of the skull
| Foramen caecum | Emissary veins |
|---|---|
| Foramen rotundum | Maxillary division of the trigeminal nerve (CN V2) |
| Foramen ovale | Mandibular division of the trigeminal nerve (CN V3), accessory meningeal branch of maxillary artery, emissary vein (, lesser petrosal nerve) |
| Foramen spinosum | Middle meningeal artery |
What are the structures that pass through jugular foramen?
The structures that traverse the jugular foramen are the sigmoid sinus and jugular bulb, the inferior petrosal sinus, meningeal branches of the ascending pharyngeal and occipital arteries, the glossopharyngeal, vagus, and accessory nerves with their ganglia, the tympanic branch of the glossopharyngeal nerve (Jacobson’s …