The rim of the auricle is called the helix and the inferior portion is called the lobule. The external auditory canal is a carved tube and contains a few hair and ceruminous glands which are specialized sebaceous or oil glands. These secrete ear wax or cerumen. Both the hairs and the cerumen help prevent dust and foreign objects from entering the ear. A number of people produce large amounts of cerumen, and this sometimes cause the build up to be impacted and can bring about muffle incoming sounds.
The Middle Ear - is an air-filled narrow cavity or cleft that extends vertically for about 15 mm and the distance horizontally is about the same. It is located in the temporal bone and is lined by epithelium. The middle ear is separated from the outer ear by the eardrum and from the inner ear by a thin bony partition that contains two small membrane-covered openings. These membranes are called the oval window and the round window. On the other side of the eardrum, embodies the mechanism for the conduction of sound waves to the internal ear. It comprises of three of the smallest bones in the body, the auditory ossicles which are connected by synovial joints. These bones are called the malleus or hammer, incus or anvil and stapes or stirrup. .
The malleus is attached to the internal surface of the eardrum and the head of the malleus articulates with the body of the incus. This is the middle bone, which then articulates with the head of the stapes. The base (footplate) of the stapes then fits into the oval window. Just below the oval window is another opening called the round window. This is enclosed by a membrane called the secondary tympanic membrane.
The anterior wall of the middle ear consists of an opening which leads directly into the auditory tube. This is called the Eustachian tube. .
This tube is made up of both bone and hyaline cartilage and connects to the middle ear with the nasopharynx which is the upper part of the throat.
These vibrations are caught by the Outer part of the ear (Pinna). ... Once in the ear canal the tympani membrane (eardrum) vibrates. The eardrum is located between the middle ear and ear canal. ... This is known as ototoxicity which means ear poisoning. ... This first bionic ear was improved upon in 1982. ...
It is connected to the brain by the auditory nerve and is composed of three divisions, the external ear, the middle ear, and the inner ear. ... The External or Outer Ear - comprises of the auricle or pinna which is the fleshy part of the outer ear. ... These secrete ear wax or cerumen. ... The middle ear is separated from the outer ear by the eardrum and from the inner ear by a thin bony partition that contains two small membrane-covered openings. ... This allows the air to enter or leave the middle ear until the pressure in the middle ear equals the atmospheric pressure. ...
THE HUMAN EAR Hearing plays such an important role in everyday life of man. ... By the 15th century, the presence of the eardrum and two of the three bones of the middle ear had been recognised, but not much effort was put into further discovering the ear. ... Almost 300 years later then earlier discoveries Domenico Cotugno would find that, in contrast to the air filled middle ear, the inner ear is fluid-filled. ... Our understanding of how the ear works entered its most exciting phase about 20 years ago when it was discovered that the inner ear actually makes sounds. Our ears sense m...
The concept of the afterlife can be seen in many different perspectives. My opinion of the afterlife depends on how someone would have lived in life. If a human's occupation in life was a serial killer who was put to death because of your crimes that were commited and therefore would be sent to hea...
What is the difference between sensible beauty and the beauty of things outside the sense? Sensible beauty is just that: beauty perceived through the senses. Beauty outside the senses is the beauty seen when what is perceived by the senses is not taken into consideration. Plotinus said that anyo...
As we make our way to the biggest rivalry in town, I lie here on this torn wrinkly brown leather, with ear buds in my ear, my Letterman jacket just under my head, like a mothers arm holding her baby, and the words you've thrown at me really strike me. ... All of sudden, my ear buds fall out of my ear. ...
Ménière's disease is a disorder of the inner ear that causes vertig, ringing in the ears (tinnitus), sensorineural hearing loss, and a feeling of fullness in the ear. ... Constant attacks of Meniere's disease kills hair cells in the inner ear. ... Mechanical disruption of the inner ear is also likely to be damaged with dilation of the utricle and saccule of the ear. ... Injecting antibiotics into the middle ear helps control vertigo but also raises the risk of hearing loss because gentamicin can damage the microscopic hair cells in the inner ear that aid us in hearing. ...
Meniere's Disease is an illness that presents victims with hearing loss, pressure in the ear, tinnitus, severe imbalance, and vertigo. Vertigo is the most dramatic and distressing symptom of Meniere's - it is commonly caused by acute labyrinthitis (a viral inflammation of the inner ear), abnormally floating crystals in the inner ear that stimulate the nerve endings of the inner ear, or is the result of cervical spine problems. ... Other causes may include a middle ear infection or head injury. Eventually, the pressure and severe disruptions inside the inner ea...
