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As a venous sinus, the cavernous sinus receives blood from the superior and inferior ophthalmic veins and from superficial cortical veins, and is connected to the basilar plexus of veins posteriorly. The cavernous sinus drains by two larger channels, the superior and inferior petrosal sinuses , ultimately into the internal jugular vein via the ...
The cavernous section of the internal carotid artery begins at the superior aspect of the petrolingual ligament. For surgeons and radiologists , it is important to be oriented to the location of this ligament in cases of possible dissection of the internal carotid artery, as it helps determine whether the dissection has occurred inside or ...
The anterior clinoid process is a pyramid-shaped bony projection of the lesser wing of the sphenoid bone and forms part of the lateral wall of the optic canal. Between each ACP lies the sella turcica, which holds the pituitary gland. Additionally, the ACP is part of the anterior roof of the cavernous sinus. The posterior and inferior portions ...
The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...
Oblique section through the cavernous sinus. The cavernous segment, or C4, of the internal carotid artery begins at the petrolingual ligament and extends to the proximal dural ring, which is formed by the medial and inferior periosteum of the anterior clinoid process. The cavernous segment is surrounded by the cavernous sinus.
The anterior petroclinoid ligament acts to laterally limit the superior wall of the cavernous sinus. The posterior petroclinoid ligament limits the posterior wall of the cavernous sinus. The angle between the two ligaments varies from 20 to 55 degrees. [3] [4] Anatomical Relations and Clinical significance:
The coronary sinus drains through the posterior wall of right atrium at the orifice of the coronary sinus. [ 6 ] [ 1 ] This orifice is located at the posteroinferior aspect of the right atrium, just medial [ 1 ] and to the left of the orifice of inferior vena cava , [ 6 ] and between the inferior vena cava and the right atrioventricular orifice ...
Infections of the infratemporal space are rare. They may be significant however, as it is possible for infection to spread via emissary veins from the pterygoid plexus to the cavernous sinus, which may result in cavernous sinus thrombosis, a rare but life-threatening condition. [2]