wich cranial nerve that petrous part of temporal bone houses:
- A- trigeminal n.
- B- facial n.
- C- vagus n.
- D- vestibalcochealer n.
The correct answer is A, trigeminal nerve (CN V).
The petrous part of the temporal bone houses the trigeminal ganglion, which is the sensory ganglion of the trigeminal nerve. The trigeminal nerve is responsible for sensation in the face, scalp, and teeth.
Other Options:
Here's why the other options are incorrect:
B, facial nerve (CN VII):
While the facial nerve passes through the petrous part of the temporal bone via the internal acoustic meatus, it does not have a ganglion within this area.
C, vagus nerve (CN X):
The vagus nerve does not pass through the petrous part of the temporal bone. It has a small branch that runs through the mastoid canaliculus, which is located in the mastoid part of the temporal bone.
D, vestibulocochlear nerve (CN VIII):
The vestibulocochlear nerve also passes through the internal acoustic meatus alongside the facial nerve, but it does not have a ganglion within the petrous part of the temporal bone.
Therefore, based on its location and association with the trigeminal ganglion, the trigeminal nerve (CN V) is the one housed within the petrous part of the temporal bone.
