Mechanical Aspects Flashcards
Four Mechanical Aspects of Auditory Sense
Sound Waves
Physical Vibrations
Fluid Waves
Hair Cell Motion
What two types of fluid are located behind the Oval Window?
Perilymph and Endolymph
What three structures are involved in a chain of vibrations within the ear?
- Tympanic membrane
- Auditory Ossicles
- Oval Window
As fluid waves cause hair cells to bend what is generated?
Nervous Impulses
What funnels the sound waves toward the Tympanic Membrane?
Pinna
Two functions of the Pinna
- Guide sound waves
- Communication
What are the two types of Cartilage in the ear?
Auricular and Annular
Which Cartilage (Auricular or Annular) is found in ONE LAYER in the pinna?
Auricular
Which Rounded Cartilage (Auricular or Annular) is found in the Inner Ear Canal?
Annular
What’s another word for ear wax?
Cerumen
What glands are found in the Cutaneous Tissues (skin) in the ear canal?
Ceruminous Glands
The Tympanic Membrane is the boundary between what two parts of the ear?
External Ear canal and the middle ear
What is the lining of the Tympanic Cavity?
Ciliated columnar epithelium
What is another word for the Auditory tube?
Eustachian Tube
What is the purpose of the Auditory tube/ Eustachian tube?
Equalizes the pressure of the outside environment with the pressure in the Middle Ear
Where is the Eustachian tube located?
Connects the caudal part of the Pharynx and the Middle Ear
Other than being a boundary, what is another function of the tympanic membrane?
Converts sounds waves to mechanical vibrations.
Auricular and Annular Cartilage are both what type of connective tissue
Elastic Cartilage
