What are stapedial arteries?
The stapedial artery is an embryonic artery which disappears during the tenth week in utero, in human species. During its short life, this artery shapes the stapes and transforms the middle meningeal artery from the internal carotid artery to a branch of the external carotid system.
What is persistent stapedial artery?
The persistent stapedial artery is a rare congenital vascular anomaly that may present as a pulsatile middle ear mass or that may appear as an incidental finding. Five cases of persistent stapedial artery are presented.
What is middle meningeal artery?
The middle meningeal artery most often branches off the maxillary artery and courses into the middle cranial fossa via the foramen spinosum. The middle meningeal artery provides blood to the dura mater through and through its branching arteries also supplies the periosteum of the inner aspects of the cranial bones.
What are the branches of the maxillary artery?
Branches
- deep auricular artery (enters squamotympanic fissure)
- anterior tympanic artery (enters squamotympanic fissure)
- middle meningeal artery (enters foramen spinosum)
- accessory meningeal artery (enters foramen ovale)
- inferior alveolar artery (enters mandibular foramen) artery to mylohyoid.
What is stapedial myoclonus?
Background: Stapedial myoclonus is an uncommon condition involving the rhythmic contraction of the stapedial tendon that may result in a host of symptoms, including tinnitus . There is a dearth of robust diagnostic modalities to diagnose stapedial myoclonus, and most patients are treated without definitive diagnosis.
What is Stapedius muscle?
Stapedius muscle is termed to be the smallest skeletal muscle in human body, which has a major role in otology. Stapedius muscle is one of the intratympanic muscles for the regulation of sound.
What nerve travels with the superior thyroid artery?
The external laryngeal nerve runs in close proximity to the origin of the superior thyroid artery in relation to the thyroid gland. The superior thyroid artery is clinically important in head and neck surgeries.
What is the origin of the 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. 2-10A–H).
Which artery passes through Pterion?
middle meningeal artery
The anterior branch of the middle meningeal artery runs beneath the pterion. It is vulnerable to injury at this point, where the skull is thin. Rupture of the artery may give rise to an epidural hematoma.
Which arteries originate from maxillary artery?
The maxillary artery supplies deep structures of the face. It branches from the external carotid artery just deep to the neck of the mandible….Second portion
- Masseteric artery.
- Pterygoid branches.
- Deep temporal arteries (anterior and posterior)
- Buccal artery.
What does stapedius muscle do?
In most of the literatures the stapedius muscle is explained as the smallest skeletal muscle in the human body. Its purpose is to stabilise the smallest bone in the body.
What is the stapedial artery?
A key vessel in human embryology, the stapedial artery is the link between the embryonic precursors of the adult internal carotid, internal maxillary, and middle meningeal arteries.
What is the prevalence of postembryonic persistence of the stapedial artery?
Postembryonic persistence of the stapedial artery is rare. The stapedial artery may present as a pulsatile middle ear mass or may be found incidentally during middle ear surgery.
How is persistent stapedial artery (PSA) diagnosed?
The stapedial artery may present as a pulsatile middle ear mass or may be found incidentally during middle ear surgery. The presence of a persistent stapedial artery (PSA) may be recognized with plain radiography, CT, or angiography. Diagnostic imaging studies in five patients with PSA are reviewed.