Chapter 25: Special Senses: Hearing & Equilibrium Flashcards
Skin covered cartilaginous structure surrounding the auditory canal.
External Acoustic Meatus (Auditory Canal)
Short narrow chamber carved into the temporal bone
The three tiny bones serving as transmitters of vibrations and located within the middle ear: the malleus, incus, and stapes.
Outter bone of the ossicles in middle ear.
Middle bone of the ossicles in middle ear.
Inner bone of the ossicles in middle ear.
A membrane-covered opening which leads from the middle ear to the vestibule of the inner ear.
Pharyngotympanic tube (Auditory Tube)
Tube that connects the middle ear and the pharynx. Also called auditory tube, eustachian tube
Osseous (Bony Labyrinth)
rigid outer wall of the inner ear. It consists of three parts: the vestibule, semicircular canals, and cochlea.
Extracellular fluid located within the cochlea (part of the ear) in two of its three compartments: the scala tympani and scala vestibuli.
Lodged within the bony labyrinth and has the same general form; it is, however, considerably smaller and is partly separated from the bony walls by a quantity of fluid, the perilymph.
Fluid contained in the membranous labyrinth of the inner ear.
An enlarged area at the beginning of a canal of the inner ear.
Helps with equilibrium and balance
Three fluid-filled bony channels in the inner ear. They are situated at right angles to each other and provide information about orientation to the brain to help maintain balance.
Snail-shaped chamber of the bony labyrinth that houses the receptor for hearing [the spiral organ (of Corti)].
Endolymph filled cavity inside the cochlea, located in between the scala tympani and the scala vestibuli, separated by the basilar membrane.
The upper bony passage of the cochlea.
The lower bony passage of the cochlea
Spiral Organ of Corti
The organ of Corti (or spiral organ) is the organ in the inner ear of mammals that contains auditory sensory cells, or "hair cells."
The sensory receptors of both the auditory system and the vestibular system in all vertebrates
Cochlear Nerve (Auditory or acoustic nerve)
A nerve in the head that carries signals from the cochlea of the inner ear to the brain.
A membrane in the cochlea that bears the organ of Corti.
A gelatinous membrane positioned over the hair cells of the spiral organ in the cochlea.
A membrane inside the cochlea of the inner ear. It separates scala media from scala vestibuli.
What is A?
What is B?
What is C?
What is D?
External Acoustic Meatus
What is E?
What is F?
What is G?
What is H?
What is I?
What is J?
Pharyngotympanic (auditory) Tube
What is K?
What is L?
What is M?
What is N?
What is O?
What is P?