pterygoid canal การใช้

• The ganglion is connected to the chorda tympani nerve and also to the nerve of the pterygoid canal.
• The greater petrosal nerve travels through the middle ear and eventually combines with the deep petrosal nerve ( sympathetic fibers ) to form the nerve of the pterygoid canal.
• Together, greater petrosal and deep petrosal nerves form the nerve of the pterygoid canal ( vidian nerve ) and they reach the pterygopalatine ganglion in the pterygopalatine fossa.
• They traverse as a periarteriolar plexus with the internal carotid artery, before they merge and form the deep petrosal nerve, which joins the greater petrosal nerve in the pterygoid canal.
• The parasympathetic fibers of the nerve of the pterygoid canal synapse at the pterygopalatine ganglion, which is closely associated with the maxillary division of the trigeminal nerve ( CN V 2 ).
• Other arteries which are present but play a smaller role include branches of the middle meningeal artery, ascending pharyngeal artery, internal carotid artery, and the artery of the pterygoid canal.
• The anterior surface of the pterygoid process is broad and triangular near its root, where it forms the posterior wall of the pterygopalatine fossa and presents the anterior orifice of the pterygoid canal.
• It then enters the cartilaginous substance which fills the foramen lacerum, and joins with the greater superficial petrosal nerve to form the nerve of the pterygoid canal, also known as the Vidian nerve.
• The angular prominence between the posterior margin of the vaginal process and the medial border of the scaphoid fossa is named the pterygoid tubercle, and immediately above this is the posterior opening of the pterygoid canal.
• It enters the foramen lacerum, where it joins the deep petrosal nerve ( a sympathetic nerve ) to form the nerve of the pterygoid canal, which passes through the pterygoid canal to reach the pterygopalatine ganglion.
• It enters the foramen lacerum, where it joins the deep petrosal nerve ( a sympathetic nerve ) to form the nerve of the pterygoid canal, which passes through the pterygoid canal to reach the pterygopalatine ganglion.
• Some of the preganglionic fibers travel along the greater petrosal nerve through the pterygoid canal ( where they join the postsynaptic fibers of the deep petrosal nerve and are called the Vidian nerve ) and synapse in the pterygopalatine ganglion, whereupon the postganglionic, postsynaptic, efferent fibers travel to innervate the lacrimal gland and the mucosal glands of the nose, palate, and pharynx.