What are the three parts of the ear and their functions
Well, this is not the case. The only condition is that you provide a direct link to the specific article you use on the page where you quote us.
The tympanic membrane is a thin, semi-transparent, flexible membrane that separates the outer and middle ear. The outer ear functions to collect sound acoustic energyand funnel it to the eardrum tympanic membrane. The middle ear is an air-filled space that contains three tiny bones known as ossicles which transmit sound. The bones are known individually according to their shapes as the: Sound waves that reach the tympanic membrane cause it to vibrate.
In turn, the eardrum sets into motion the first ear bone, which transmits the motion to the second bone the incus. Finally, the third bone the stapes works like a piston to amplify and transform the sound energy into mechanical energy.
This mechanical energy is then transmitted from the stapes to the hearing part cochlea of the inner ear via the oval window a thin membrane between the middle and inner ear. The middle ear is connected to the back of the nose nasopharynx by the Eustachian tube.
The Eustachian tube is a narrow tube that connects the middle ear to the back of the nose and throat. During swallowing, the Eustachian tube opens up to allow air into the middle ear, so that air pressure on either side of the tympanic membrane is the same.
In some situations when there is a sudden change in air pressure for example — during take off and landing in a planethe pressure in the middle ear is not the same as the outside air pressure. This can make the eardrum bulge or retract and less able to transmit vibrations, causing temporary hearing problems. The delicate membranous inner ear labyrinth is enclosed and protected by a bony chamber that is referred to as the bony labyrinth.
The inner ear contains two main structures: The cochleain the shape of a snail, which is involved in hearing. Once the vibrations of the eardrum have been transmitted to the oval window, the sound waves continue their journey into the inner ear.
The Human Ear Facts and Functions of the Ear - An Organ of Hearing
The inner ear is a maze of tubes and passages, referred to as the labyrinth. In the labyrinth can be found the vestibular and the cochlea. In the cochlea, sound waves are transformed into electrical impulses which are sent on to the brain. The brain then translates the impulses into sounds that we know and understand. What is the cochlea and what is the function of the cochlea? The cochlea resembles a snail shell or a wound-up hose and is filled with a fluid called perilymph and contains two closely positioned membranes.
These membranes form a type of partition wall in the cochlea. However, in order for the fluid to move freely in the cochlea from one side of the partition wall to the other, the wall has a little hole in it the helicotrema. This hole is necessary, in ensuring that the vibrations from the oval window are transmitted to all the fluid in the cochlea. Three major parts of a human ear are the outer, middle and inner respectively, each having its own functions, anatomy and ear diseases as well.
The external ear anatomy is the study of the parts of the outer ear. There are two major parts of the external ear, i. Pinna or the auricle lies externally and its main job is to capture the sound waves and transmit them to the external acoustic meatus. Most of the framework of the auricle is cartilaginous in nature.
Here lobule is the only structure which does not have the support of cartilage. The external acoustic meatus, on the other hand, is a tube like structure that extends from the middle hollow depression or concha of the auricle.
At the other end, it reaches the tympanic membrane. It has a cartilaginous structure and gets the bony support from the temporal bone. The branches of vagus and mandibular nerves provide sensory innervation to this particular part of your external ear.
Do you know if the external acoustic meatus travel in the straight path? Well, this is not the case.
In fact, it has got an S-shaped path. Articles from Britannica encyclopedias for elementary and high school students. Ears are the organs, or body parts, in humans and many other animals that allow them to hear. Ears work by picking up vibrations tiny back-and-forth movementsusually in the air or water. Then they change the vibrations into signals that the brain understands as sound.
Ears also help an animal to keep its body in balance. Vibrations of air molecules moving through the air are received and translated into messages that the brain recognizes as sound by a complex organ-the ear. The ear has two important, but different, functions: See also skeleton; Sound.
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The outer ear
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