The geniculum of the facial canal is a group of nerve cells where the facial nerve's sensory and the parasympathetic fibers are located at.
The parasympathetic fibers go to the lacrimal glands such as the greater petrosal nerve and help to produce tears.
The deep structures of the face which are divided in 2 medial odd spaces are the (pharyngeal mucosal and retropharyngeal spaces), and in three lateral even spaces (retrostylian, prestylian, and masticator spaces).
The size of the facial nerve is 0.80 mm in diameter and the spinal accessory nerve is 0.63 mm and the size of the hypoglossal nerve is 1.82 mm.
The longest segment of the facial nerve is the mastoid segment.
The pyramidal eminence is the second bend in the facial nerve, where the nerve then runs downward as the mastoid segment.
The thinnest part of the facial nerve is the labyrinthine segment which is also the narrowest portion of the facial canal which is followed by the tym-panic segment.
The beginning of the facial canal is the Fallopian canal which is a Z-shaped channel that is situated in the petrous part of the temporal bone.
The fallopian canal originates at the internal acoustic meatus and extends to the stylomastoid foramen.
The three parts of the facial canal are the facial nerve, the labyrinthine artery and the vestibulocochlear nerve which are three important structures that enter the facial canal via the internal acoustic meatus.
The narrowest part of the facial canal is the Labyrinthine segment.
The shortest and narrowest segment of the facial canal is the Labyrinthine segment which is also the first segment of the facial canal.
The location of face boundaries are the lower face starts superiorly at the upper lip and ends inferiorly at the lower border of the chin.
The lateral border of the lower face is made up of the angle of the mandible.
The lower face region contains the lips, chin, and jaws.
In the lower face region, the lips are the most noticeable structures in the area.
The anterior boundaries of the infraorbital and zygomatic regions and the cheek are the external nose and the nasolabial and labiomarginal folds;the posterior boundary is the masseter muscle's anterior margin;the superior boundary is the infraorbital margin;the inferior boundary is the base of the mandible.
The depth of the sinus tympani is between 0.5 mm to 5 mm with a mean depth of 1.72 mm.
The height of the sinus tympani ranges from 1 mm to 6 mm with a mean height of 3.5 mm.
The sinus tympani of the ear is a deep depression in the tympanic cavity posterior to the tympanic promontory and the round window and is located on the medial wall of the tympanum between the subiculum and the ponticulus.
The sinus tympani also extends in a posterior direction, medial to the pyramidal eminence, stapedius muscle, and facial nerve and lateral to the posterior semicircular canal.
The width of the facial recess is 4.5 mm with a standard deviation of 1.3 mm.
The facial recess in the posterior wall of the middle ear is a small recess in the posterior wall of the mesotympanum lateral to the pyramidal eminence and stapedius muscle origin.
The upper mastoid portion of your facial nerve runs immediately posterior to it.
The boundaries of the facial recess is a triangular space that is defined medially by the mastoid segment of the facial nerve (FN), laterally by the chorda tympani nerve (CT), and superiorly by the incudal fossa.
The size of the facial recess ranges from 8.08 to11. 7 mm a mean of 9.87 ± 0.81 mm in the CT oblique sagittal plane and range from 8.02 to11.
The facial recess or tympanic cavity and also known as the facial recess of the petrous temporal bone is a small recess located in the posterior wall of the mesotympanum lateral to the pyramidal eminence and stapedius muscle origin.
And the upper mastoid portion of the facial nerve runs immediately posterior to it which is how it got it's name.
The tympanic cavity, is a small, recessed area within the middle ear.
It serves as a pathway between the eustachian tube and the middle ear, permitting the flow of air in and out of the middle ear and maintaining stable pressure.
A facial recess is a triangular space defined medially by the mastoid segment of the facial nerve (FN), laterally by the chorda tympani nerve (CT), and superiorly by the incudal fossa.
The extended facial recess is a surgical pass to the tympanic cavity.
It is bounded medially by the facial nerve and laterally by the tympanic annulus, and varies among individuals.
For computer-assisted, minimally invasive temporal bone surgery, high-resolution definition is critically important.
The facial recess is also defined as the bone or air cell system occupying the space between the facial nerve medially, the chorda tympani nerve laterally, and the fossa incudis superiorly.
Also the space that is lateral to the pyramidal eminence is the facial recess, which is accessed during surgery for cochlear implant.
The space medial to the pyramidal eminence is the sinus tympani.
The facial recess approach permits surgical access to the round window area.
This route is used in patients who are undergoing cochlear implantation.
The maxillary sinus is the largest air sinus in the human body, and it has three recesses.
The Infraorbital recess is superiorly towards the eye, the zygomatic recess is pointed laterally towards the ear, and the alveolar recess pointed inferiorly towards the upper part of the jaw.
The sphenoethmoidal recess is a small triangular space superior to the superior nasal meatus of the nasal cavity into which the sphenoidal sinus opens.
The sphenoid sinuses are paired spaces formed within the body of the sphenoid bone, communicating with the roof of the nasal cavity via the sphenoethmoidal recess in its anterior wall.
The two hemisinuses are separated by a septum which may or may not be in the midline.
It usually lies anteroinferior to the sella.
The epitympanic recess is the dorsal extremity of the tympanic cavity, within which lie the head of the malleus and short crus of the incus.
Ligaments stabilize and anchor the incudomallearis joint and the short crus of the incus within this recess.