The sphenopalatine artery is a terminal branch of the internal maxillary artery originating from the external carotid artery system. [4] The SPA is the major blood vessel to the nasal cavity mucosa: supplying the superior, middle, and inferior turbinate; lateral nasal wall; and nasal septum.

Which artery gives rise to the sphenopalatine artery?

The sphenopalatine artery arises from the pterygopalatine segment of the maxillary artery. Within the pterygopalatine fossa, the artery passes through the sphenopalatine foramen to reach the upper nasal cavity behind and slightly above the middle nasal concha.

Why is sphenopalatine artery called artery of epistaxis?

The sphenopalatine artery, formerly known as the nasopalatine artery, is the terminal branch of the maxillary artery that is the main supply to the nasal cavity. It is colloquially know as the artery of epistaxis given its common involvement in cases of nose bleeds.

How do you find the sphenopalatine artery?

The location of the sphenopalatine foramen (SPF) is identified within the superior meatus after elevation of a mucoperiosteal flap and identification of the crista ethmoidalis from the posterior aspect of the middle meatus. Opening the maxillary sinus may assist the surgeon if these landmarks are not quickly found.

How is sphenopalatine foramen formed?

The sphenopalatine foramen forms from the fusion of the palatine bone and the sphenoid bone around the sphenopalatine artery; thus, a description of the embryology of the structures, as mentioned earlier, will provide a better understanding of the development of the sphenopalatine foramen.

LEFT SPHENOPALATINE ARTERY CAUTERIZATION

30 related questions found

What does the sphenopalatine foramen transmit?

The sphenopalatine foramen connects the nasal cavity and the pterygopalatine fossa, transmitting the nasopalatine nerve, posterior superior nasal nerves, and sphenopalatine artery and vein.

What is Sphenopalatine fossa?

In human anatomy, the pterygopalatine fossa (sphenopalatine fossa) is a fossa in the skull. A human skull contains two pterygopalatine fossae—one on the left side, and another on the right side. ... It is the indented area medial to the pterygomaxillary fissure leading into the sphenopalatine foramen.

What is sphenopalatine artery ligation?

Sphenopalatine artery ligation is a commonly employed surgical intervention for control of posterior epistaxis unresponsive to nasal packing.

Where does the 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.

How do you do a sphenopalatine block?

1. Inject 0.5 mL of 2% viscous lidocaine into each nostril with the open end of a 3 mL syringe (without needle). Have the patient sniff to draw the anesthetic posteriorly.
2. Use an atomizer to draw up 1 mL of 1% lidocaine per naris and aerosolize into each naris. Remember, you can administer a maximum of 1 mL per naris.

Where does the anterior ethmoidal artery come from?

The anterior and posterior ethmoidal arteries arise from the ophthalmic artery in the medial third of the orbit (see Fig. 2-13A, B) and range in diameter between 0.5 and 1 mm in diameter.

What does the greater palatine artery supply?

The greater palatine artery is a branch of the descending palatine artery (branch of the 3rd part of the maxillary artery) ⁴. The blood vessel supplies the hard palate mucosa, gingival tissue, and palatine tonsils ⁵.

What is the spa artery?

The sphenopalatine artery (SPA) is one of the terminal branches of the internal maxil- lary artery (IMA) which originates from the external carotid artery system. It provides 90% of the blood supply to the nasal cavity i.e. the lateral nasal wall, the turbinates and most of the nasal septum.

What does the ascending pharyngeal artery supply?

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.

How do you remember maxillary arteries?

A mnemonic for remembering the branches of the maxillary artery is: DAM I AM Piss Drunk But Stupid Drunk I Prefer, Must Phone Alcoholics Anonymous.

Where is the ethmoid artery?

The artery is found between the second and third lamella. When the ethmoid sinuses are more pneumatised and in particular when there is a supraorbital cell, the artery lies below the skull base.

Where does maxillary artery come from?

The maxillary artery is a branch of the external carotid artery and supplies many structures on the face. The maxillary artery arises posterior to the mandibular neck, traverses the parotid gland, and passes forward between the sphenomandibular ligament and ramus of the mandible.

Where does maxillary artery enter?

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 ...

Where does ophthalmic artery branch from?

The ophthalmic artery most commonly arises as the first major branch of the internal carotid artery, directly after emerging from the carotid sinus. It arises from the C6 segment of the internal carotid artery, usually at the level of the anterior clinoid process of the sphenoid bone.

What is endoscopic sphenopalatine artery ligation?

An endoscopic transnasal approach for ligation of the terminal branch of the internal maxillary artery, the sphenopalatine artery, provides an alternative to transantral ligation. We have used endoscopic ligation of the sphenopalatine artery to treat 38 patients requiring surgical therapy for epistaxis.

What artery is in your nose?

The nose has a rich vascular supply, with substantial contributions from the internal carotid artery (ICA) and the external carotid artery (ECA). The ECA system supplies blood to the nose via the facial and internal maxillary arteries. The superior labial artery is one of the terminal branches of the facial artery.

What is intractable epistaxis?

Intractable idiopathic epistaxis is defined as epistaxis of unknown cause that is refractory to nasal packing. Such epistaxis is commonly treated with surgical intervention, including ligation of the terminal segments of the internal maxillary artery and the ethmoid arteries.

Is Sphenopalatine fossa and pterygopalatine fossa same?

The pterygopalatine fossa (PPF), less commonly known as the sphenopalatine fossa, is a small but complex space of the deep face in the shape of an inverted pyramid located between the maxillary bone anteriorly, the pterygoid process posteriorly, and orbital apex superiorly.

What is the Palatine canal?

The greater palatine canal (or pterygopalatine canal) is a passage in the skull that transmits the descending palatine artery, vein, and greater and lesser palatine nerves between the pterygopalatine fossa and the oral cavity.

Which space transmits the maxillary artery to the pterygopalatine fossa?

The pterygomaxillary fissure is located between the anterior and posterior wall of the pterygopalatine fossa. It communicates with the infratemporal fossa and transmits the posterior superior alveolar nerve and the maxillary artery.