What is the petrous bone? The petrous bone, pars petrosa, is one of three bones that make up the temporal bone. The other two bones are the pars tympanica and the pars squamosa. For the most part, the petrous bone projects into the interior of the bony skull (exception: mastoid process). The pars petrosa owes … Petrous bone (Petrous pyramid): Structure & Function
The petrous bone is a bone and is part of the human skull. It is located at the base of the skull and is part of the temporal bone (Os temporale). In its pyramid-like basic shape lies the inner ear with the organ of equilibrium and the cochlea. Of clinical importance for the petrous bone … Petrous Bone: Structure, Function & Diseases
The tegmentum is a part of the brainstem that includes the midbrain, bridge (pons), and medulla oblongata. It contains numerous nuclear areas (nuclei) and nerve tracts, some of which perform motor functions and others sensory or sensitive functions. Nonspecific lesions to the tegmentum may occur, for example, in the setting of stroke, neurodegenerative disease, or … Tegmentum: Structure, Function & Diseases
The jugular foramen is located at the base of the skull and embodies the passage of the ninth to eleventh cranial nerves as well as the posterior meningeal artery, sigmoid sinus, and inferior petrosal sinus. Problems in the region of the jugular foramen can result in various neurologic syndromes such as Avellis, Jackson, Sicard, Tapia, … Foramen Jugulare: Structure, Function & Diseases
The petrosal nerve minor is a part of the IX cranial nerve. It is located in the posterior part of the brain. Its function is to supply the parotid gland. What is the petrosal nerve minor? The petrosal minor nerve is a nerve located inside the skull. It belongs to the branches of the IXth … Petrosal Nerve Minor: Structure, Function & Diseases
The tympanic nerve is a part of the IX cranial nerve. It is located in the middle ear. There, it innervates the eustachian tube. What is the tympanic nerve? The tympanic nerve is a branch of the glossopharyngeal nerve. This is the IXth cranial nerve. Its main function is to regulate the muscles of the … Tympanic Nerve: Structure, Function & Diseases
The internal auditory canal In contrast to the external auditory canal, the internal auditory canal is part of the inner ear and runs in the petrous bone. It serves the facial nerve (VII. cranial nerve), the vestibulocochlear nerve (VIII. cranial nerve) as well as blood vessels as a passage into the posterior fossa. These nerves … The internal auditory canal | Auditory Canal
General information The term “auditory canal” refers to two different anatomical structures. On the one hand, it refers to the “internal auditory canal” (Meatus acusticus internus), on the other hand to the “external auditory canal” (Meatus acusicus externus). Colloquially, however, the latter is usually meant. The external auditory canal The external auditory canal as part … Auditory Canal
The inferior petrosal sinus is located in the human skull. It is a blood pathway that supplies the brain. Venous blood is transported in it. What is the inferior petrosal sinus? The inferior petrosal sinus serves to ensure blood supply to the human brain. Together with many other blood conduits, it transports venous blood. Important … Inferior Petrosal Sinus: Structure, Function & Diseases
The facial nerve is the name given to the facial nerve in humans. It forms the 7th cranial nerve. What is the facial nerve? The facial nerve is also known as the facial nerve, 7th cranial nerve, VII nerve or intermediofacial nerve. This refers to the 7th cranial nerve. What is meant by this is … Facial Nerve: Structure, Function & Diseases
The ala major ossis sphenoidalis is the large wing of the sphenoid bone. This refers to two strong bone plates whose attachment is located on the body of the sphenoid bone. What is the ala major ossis sphenoidalis? Two strong bone plates are called the ala major ossis sphenoidalis or alae majores ossis sphenoidales. Their … Ala Major Ossis Sphenoidalis: Structure, Function & Diseases
