The pterygopalatine fossa (PPF) is a small, clinically inaccessible, fat-filled space located in the deep face that serves as a major neurovascular crossroad between the oral cavity, nasal cavity, nasopharynx, orbit, masticator space, and the middle cranial fossa.
Why is the infratemporal fossa important?
Nerves coursing through and around the infratemporal fossa are responsible for providing a vast majority of sensory and motor function to the lower face and other important structures such as the dura mater.
What nerve goes through the infratemporal fossa?
The mandibular nerve enters the infratemporal fossa and passes through the foramen ovale in the sphenoid bone, and divides at that point into a smaller anterior and a larger posterior trunk.
What ganglion is located in the infratemporal fossa?
The otic ganglion is a small parasympathetic ganglion located immediately below the foramen ovale in the infratemporal fossa and on the medial surface of the mandibular nerve.What is in the Pterygopalatine fossa?
The pterygopalatine fossa also contains multiple important structures. This fossa contains the pterygopalatine ganglion. Nerve roots from the maxillary nerve suspend this ganglion. The PPF contains the terminal third segment of the maxillary artery.
What is the Infratemporal region?
Infratemporal fossa. This is a space lying beneath the base of the skull between the side wall of the pharynx and the ramus of the mandible. It is also referred to as the parapharyngeal or lateral pharyngeal space.
What bones form Pterygopalatine fossa?
- the maxilla.
- the palatine.
- the sphenoid.
Is parotid gland in infratemporal fossa?
The parotid region is actually part of the neck but it extends into the facial region as well. It also must be studied before the infratemporal region can be examined. The parotid gland is a superficial structure located in the upper neck above the posterior belly of the digastric muscle. …What connects the infratemporal fossa to the orbit?
Pterygopalatine fossaFMA75309Anatomical terms of bone
What is fossa in anatomy?Fossa – A shallow depression in the bone surface. Here it may receive another articulating bone or act to support brain structures. Examples include trochlear fossa, posterior, middle, and anterior cranial fossa.
Article first time published onWhere is submandibular ganglion?
The submandibular ganglion is small and fusiform in shape. It is situated above the deep portion of the submandibular gland, on the hyoglossus muscle, near the posterior border of the mylohyoid muscle.
What is the alveolar nerve?
The superior alveolar nerves are all branches of the maxillary nerve, which is the second branch of the trigeminal nerve. … The inferior alveolar nerve, which is small in length, is a branch of the mandibular nerve, which is the third branch of the trigeminal nerve.
What does the infratemporal fossa contain?
The infratemporal fossa contains the mandibular nerve, the inferior alveolar nerve, the lingual nerve, the buccal nerve, the chorda tympani nerve, and the otic ganglion.
What is scaphoid fossa?
Medical Definition of scaphoid fossa : a shallow oval depression that is situated above the pterygoid fossa on the pterygoid process of the sphenoid bone and that provides attachment for the origin of the tensor veli palatini muscle.
What is medial wall of Pterygopalatine fossa formed by?
The round foramen, crossed by the maxillary nerve, is located where the pterygoid process continues with the vault, and immediately below it is located the pterygoid canal, or Vidian nerve, for the transit of the homonymous nerve and artery. The medial wall is formed by the vertical plate of the palatine bone.
Where is sphenoid bone?
An unpaired bone located in the cranium (or skull), the sphenoid bone, also known as the “wasp bone,” is located in the middle and toward the front of the skull, just in front of the occipital bone.
What is Pterygoid fossa?
The pterygoid fossa is an anatomical term for the fossa formed by the divergence of the lateral pterygoid plate and the medial pterygoid plate of the sphenoid bone.
What are the boundaries of the temporal and infratemporal fossa?
Both superiorly and posteriorly the temporal fossa is bordered by the superior temporal line (origin of the deep temporal fascia). The inferior border runs along the zygomatic arch. Lastly, the anterior border is marked by the frontal process of the zygoma and the zygomatic process of the frontal bone.
Where is the foramen ovale in the skull?
The foramen ovale is an oval shaped opening, placed obliquely in the base of the skull. It is situated in the greater wing of sphenoid bone, close to the upper end of posterior margin of lateral pterygoid plate, medial to foramen spinosum and lateral to the foramen lacerum [1].
Which bones make up the Infratemporal fossa?
Medially, the sphenoid and the palatine bones form a vertical bony rest, and laterally, the ramus and the coronoid process cover the opening of the fossa.
What is parotid region?
The parotid glands can be palpated anterior and inferior to the lower half of the ear on the lateral surface of the cheek. They extend inferiorly to the lower border of the mandible and superiorly to the zygomatic arch.
What causes Frey's syndrome?
Frey’s Syndrome is a syndrome that includes sweating while eating (gustatory sweating) and facial flushing. It is caused by injury to a nerve, called the auriculotemporal nerve, typically after surgical trauma to the parotid gland.
What is the meaning and location of fossa?
Medical Definition of fossa : an anatomical pit, groove, or depression the temporal fossa of the skull the fossa in the liver for the gallbladder. Other Words from fossa.
Where is the posterior fossa?
The posterior fossa is a small space in the skull, found near the brainstem and cerebellum. The cerebellum is the part of the brain responsible for balance and coordinated movements. The brainstem is responsible for controlling vital body functions, such as breathing.
How many fossa are in the body?
BoneCranial fossaNumbersphenoidmiddle cranial fossa2temporalmiddle cranial fossa2temporalposterior cranial fossa2temporalposterior cranial fossa2
What organs receive fibers from submandibular ganglion?
The submandibular ganglion (SMG) is a parasympathetic ganglion, which receives inputs from preganglionic cholinergic neurons and innervates the submandibular salivary gland to control saliva secretion.
What do ganglia do?
Ganglia are clusters of nerve cell bodies found throughout the body. They are part of the peripheral nervous system and carry nerve signals to and from the central nervous system.
Where are the parasympathetic ganglia located?
As shown in Figure 2 and Table 1, parasympathetic ganglia are located close to or within the organs they innervate. Preganglionic fibers arise from the brain stem and sacral region of the spinal cord. The eye, face, and mouth are served by cranial verves III, VII, and IX.
Where does superior alveolar nerve come from?
The superior alveolar nerves originate from the maxillary branch of the trigeminal nerve. The superior alveolar nerves divide into the anterior, middle, and posterior superior alveolar nerves.
Which nerve is called as dentists nerve?
Inferior alveolar nerveFrommandibular nerveTomylohyoid, dental, incisive, and mentalInnervatesdental alveolusIdentifiers
Where is inferior alveolar artery from?
The inferior alveolar artery is the major blood supply to the mandible and mandibular teeth. This artery has a very consistent path, originating from the maxillary artery and passing inferiorly until it enters the mandibular foramen, accompanied by the inferior alveolar nerve and vein.
