Term
| What gives off the posterior auricular artery? |
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Definition
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Term
| What gives off the anterior auricular artery? |
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Definition
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Term
| What nerves provide sensory innervation to the auricle? |
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Definition
| Lesser occipital (C2), great auricular (C2-3), auriculotemporal nerve (V3) |
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Term
| What provides branches for sensory innervation to the external auditory meatus? |
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Definition
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Term
| The handle of the malleus attaches to what part of the tympanic membrane? |
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Definition
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Term
| What separates the Pars tensa from the Pars flaccida? |
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Definition
| Anterior and posterior malleolar folds |
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Term
| What provides branches for sensory innervation of the outer surface of the tympanic membrane? |
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Definition
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Term
| What provides branches for sensory innervation of the inner surface of the tympanic membrane |
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Definition
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Term
| The middle ear is located in what bone? |
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Definition
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Term
| What are the different parts of the middle ear? |
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Definition
| Tympanic cavity, epitympanic recess |
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Term
| What allows communication between the middle ear and the nasopharynx? |
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Definition
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Term
| What are the different walls of the middle ear? |
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Definition
| Tegmental, jugular, membranous, anterior, labyrinthine, and mastoid walls |
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Term
| What separates the middle ear from the middle cranial fossa and serves as the roof of the middle ear? |
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Definition
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Term
| What separates the middle ear from the internal jugular vein and makes up the floor of the middle ear? What is contained within it? |
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Definition
| Jugular wall, contains tympanic canaliculus |
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Term
| What part of the middle ear consists almost entirely of the tympanic membrane? |
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Definition
| Membranous (lateral) wall |
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Term
| What separates the middle ear from the internal carotid artery in the carotid canal? |
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Definition
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Term
| What landmarks and structures are found in the anterior wall of the middle ear? |
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Definition
| Opening of canal of tensor tympani muscle, entrance of the pharyngotympanic tube, foramen for exit of the chorda tympani, foramen for exit of the lesser petrosal nerve |
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Term
| What part of the middle ear separates it from the inner ear? |
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Definition
| Labyrinthine (medial) wall |
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Term
| What landmarks and structures are found in the labyrinthine wall of the middle ear? |
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Definition
| Promontory which is formed by the basal turn of the cochlea, oval window to which the foot of the stapes is attached, round window, prominence of the facial canal, prominence of lateral semicircular canal |
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Term
| What separates the middle ear and the mastoid air cells? |
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Definition
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Term
| The mastoid (posterior) wall is superiorly continuous with what? What does the mastoid wall contain? |
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Definition
| Continuous with aditus to mastoid air cells, contains pyramidal eminence of stapedius tendon and the opening for the chorda tympani to enter the ear |
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Term
| What are the auditor ossicles? |
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Definition
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Term
| The chorda tympani travels between what structures as it crosses the middle ear? |
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Definition
| Between incus and malleus |
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Term
| Surgical incision of the tympanic membrane is made in what quadrant? |
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Definition
| Posterior inferior quadrant |
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Term
| Which part of the ear functions to transmit sound waves? |
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Definition
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Term
| Describe the transmission of sound waves through the inner ear |
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Definition
| Sound -> tympanic membrane -> moves ossicles -> moves oval window -> moves perilymph in scala vestibuli and scala tympani -> waves activate receptors in the spiral organ |
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Term
| What relieves pressure from received sound waves in the ear? |
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Definition
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Term
| What attenuates the tympanic membrane in response to very loud noises? |
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Definition
| Tensor tympani and stapedius |
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Term
| What innervates the tensor tympani, allowing it to attenuate the tympanic membrane in response to loud noises? What is it attached to? |
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Definition
| Nerve to medial pterygoid via CN V3, attached to malleus |
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Term
| What innervates the stapedius, allowing it to attenuate the tympanic membrane in response to loud noises? What is it attached to? |
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Definition
| Nerve to the stapedius via CN VII, attached to stapes |
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Term
| What is linked by the pharyngotympanic (eustachian) tube? |
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Definition
| Nasopharynx to middle ear |
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Term
| What muscles are attached to the pharyngotympanic (eustachian) tube? |
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Definition
| Levator veli palatini, salpingopharyngeus, tensor tympani, tensor veli palatini |
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Term
| What bone contains the inner ear? |
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Definition
| Petrous part of temporal bone |
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Term
| What makes up the bony labyrinth of the inner ear? |
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Definition
| Vistibule, cochlea, semicircular canals |
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Term
| What substance fills the bony labyrinth? |
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Definition
| Perilymph, also contains the membranous labyrinth |
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Term
| What makes up the membranous labyrinth? |
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Definition
| Semicircular ducts, cochlear duct, utricle, saccule |
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Term
| What substance fills the membranous labyrinth? |
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Definition
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Term
| What is the "organ of hearing"? |
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Definition
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Term
| What are detected by the crista of the anterior, posterior, and lateral semicircular ducts? |
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Definition
| Direction of movement (vestibular apparatus) |
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Term
| What is detected by the macula of the utricle and saccule of the membranous labyrinth? |
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Definition
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