Week 1 - C - Workshop, Anatomy of Ear and Nose Flashcards
What nerves supply the posterior aspect of the ear and the lobe of the ear?
The anterior rami of C2 and C3 spinal nerves
What type of joints are in the ossicles of the ear? What nerve goes between the malleus and the incus?
Synovial joints Chorda tympani - branch of the facial nerve goes between these
Middle Ear Ossicles
* Malleus(hammer), incus(anvil), and stapes (stirrup) * Articulate by means of synovial joints * There are small, striated skeletal muscles associated with these middle ear ossicles that contribute to aspects of normal hearing.
Which bone of the skull does the foramen magnum lie in? What passes through here?
The occipital bone The spinal cord exits the skull through ehre
Which bone attached to the temporal has the function to prevent anterior dislocation of the TMJ?
The zygomatic process
Which part of the temporal bone articulates at the pterion? (thinnest part of the skull)
The squamous part of the temporal bone
What is the pterion composed of?
The pterion is the region where the frontal, parietal, temporal, and sphenoid join together. It is located on the side of the skull, just behind the temple.
What structure for hearing containing the cochlea and the vestibular apparatus is located in the petrous part of the temporal bone?
The otic capsule
What is the unpaired midline bone - extension of the perpendicular plate of the ethmoid bone?
The vomer
Superior projection from the perpendicular plate of the ethmoid bone?
The crista galli
Which sinus is superior to the nose? Which sinus drains into the sphenoethmoidal recess?
Frontal sinus is uperior Sphenoid sinus drains into the recess
Where does the maxillary sinus drain? What drains into the inferior meatus?
Maxillary sinus - drains into the semilunar hiatus of the middle meatus Nasolacrimal duct drains into the inferior meatus
What is the opening from the middle ear to the lateral wall of the pharynx?
The Eustachian tube
Which nerve is this? Mixed (sensory and motor) Passes through internal acoustic meatus Food is less pleasurable if damaged If damaged can cause the surface of eye to be damaged (explain why in answer) The canal passes through the petrous part of temporal bone Supplies part of the external ear
The facial nerve (CN VII) The nerve supplies the orbicularis oculi which supplies the muscle of facial expression for blinking to move tears across the cornea of the eye
Where in the stomach is normal air present as we swallow air as we eat?
In the fundus of the sotmach
