Table of Contents
What is the anatomy and physiology of the ear?
The ear is a cartilaginous structure. For physiological study purposes, it subdivides into three fundamental substructures: the external ear, the middle ear, and the inner ear. The outer ear, also called auricle, is composed of cartilage and it is the part with the most contact with the external world.
What is ear and its function?
human ear, organ of hearing and equilibrium that detects and analyzes sound by transduction (or the conversion of sound waves into electrochemical impulses) and maintains the sense of balance (equilibrium).
How many bones are in your ear?
three
The middle ear contains three tiny bones: Hammer (malleus) — attached to the eardrum. Anvil (incus) — in the middle of the chain of bones. Stirrup (stapes) — attached to the membrane-covered opening that connects the middle ear with the inner ear (oval window)
What is the base of the ear?
The base of the stapes is located in a depression called the oval window [6]. The oval window membrane is one of two membranes that separate the middle ear space from the inner ear. The other is the round window membrane. The Eustachian tube [7] connects the middle ear space to the upper part of the throat.
How many muscles are in your ear?
Muscles. Two minuscule muscles are located in the middle ear. The longer muscle, called the tensor tympani, emerges from a bony canal just above the opening of the eustachian tube and runs backward and then outward as it changes direction in passing over a pulleylike projection of bone.
Which is the smallest bone in ear?
the stapes
Once there, the sound waves vibrate three bones known as the ossicles, which are made up of the malleus, the incus, and the stapes. The stapes is the smallest bone in the human body.
What is the name of ear?
The medical term for the outer ear is the auricle or pinna. The outer ear is made up of cartilage and skin. There are three different parts to the outer ear; the tragus, helix and the lobule. The ear canal starts at the outer ear and ends at the ear drum.
How many bones are in ear?
What are the four components of ears?
The parts of the ear include:
- External or outer ear, consisting of: Pinna or auricle. This is the outside part of the ear.
- Tympanic membrane (eardrum). The tympanic membrane divides the external ear from the middle ear.
- Middle ear (tympanic cavity), consisting of: Ossicles.
- Inner ear, consisting of: Cochlea.
Which part of the ear is filled with fluid?
The inner ear contains a group of interconnected, fluid-filled chambers. The snail-shaped chamber, called the cochlea (KOK-lee-uh), plays a role in hearing. Sound vibrations from the bones of the middle ear are transferred to the fluids of the cochlea.
Are ears organs?
The ear is the organ of hearing and balance. The parts of the ear include: External or outer ear, consisting of: Pinna or auricle.
Which liquid is present in ear?
Endolymph is the fluid contained in the membranous labyrinth of the inner ear.