Hearing, Equilibrium, Chemical Senses Flashcards
Where do the structures of the ear transfer sound vibrations?
Auditory nerve
Mechanoreceptors
Transfer sound vibrations to the auditory nerve
What does the outer ear consist of?
The auricle (outer ear) and the external auditory canal
After sounded waves travel through the outer ear, they vibrate what?
Tympanic membrane (eardrum)
What are the bones in the middle ear?
The ossicles
- malleus
- incus
- stapes
What do the ossicles do?
Amplify sound waves to the inner ear
Cochlea
A bony, snail-shaped structure containing membranes filled with perilymth
Organ of Corti
The tiny portion of the cochlea that creates an impulse
Sound from the ossicles vibrates what?
Perilymth
Maculae
Receptor cells found in the cochlea that help maintain static equilibrium (rest)
Semicircular canals
Located above the cochlea and are situated at right angles to each other
What are semicircular canals filled with?
Fluid to help maintain dynamic equilibrium (moving)
How are all types of motion recognized by the semicircular canals?
They are all at right angles
What senses use chemoreceptors?
Smell and taste
What distinguishes thousands of molecules (scents)?
Olfactory receptors in the upper nasal cavity
