It is the most obviously visible part of the auditory system…. The ear canal, also called the external acoustic meatus, is a passage comprised of bone and skin leading to the eardrum. The ear is comprised of the…. There are three bones located in the middle ear: the incus, the malleus and the stapes.
Collectively, all three bones comprise the ossicles. The malleus is the outermost and largest of the three small bones in the middle ear, and reaches an average length of about eight millimeters in the…. The human ear consists of three regions called the outer ear, middle ear, and inner ear. The oval window, also known as the fenestra ovalis, is a…. The auricularis anterior muscle is located between the ear and the eye.
It is in an area with few other points of insertion or origination, which is…. The posterior auricular vein is the name for a vein that is formed via the collection of several venous tributaries situated behind the ear. The jejunum is one of three sections that make up the small intestine. Learn about its function and anatomy, as well as the conditions that can affect….
The vagus nerve is the longest of the 12 cranial nerves. Here, learn about its anatomy, functions, and the kinds of health problems that can occur.
The fimbriae of the uterine tube, also known as fimbriae tubae, are small, fingerlike projections at the end of the fallopian tubes, through which…. Health Conditions Discover Plan Connect. Human body Head Ear Stapes Stapes. Medically reviewed by Alana Biggers, M.
Read this next. Have you ever dressed up as a human skeleton at a Halloween party? Or ever heard stories about skeletons at medical colleges? Well, skeletons in our mind are associated with scary movies and stories because they represent the dead remains of a person which ideally you would not want to stumble upon. In reality, a skeleton is the framework of bones forming the basic support structure of your body.
The bones you see or hear about are usually dry, crumbly and dead bones but the bones of your skeleton are not dead. Bones in our body are very much alive and growing. It is made up of two substances:. Compact bone- The inner part of Periosteum is the compact hard bone that is usually seen in a skeleton.
Bone marrow- The innermost part of the bone protected by cancellous bone. It is a jelly-like substance that makes blood cells. The human body consists of both long and short bones. Longest bone is undoubtedly the thigh bone but interestingly the smallest and the lightest bone in a human body is stapes or stirrup found in our middle ear. It plays an important role in transmitting the sound vibrations from our outer ear to the inner ear. As we know, the sound is a form of energy that requires material medium to travel.
The sound produced by a vibrating source travels through air and reaches the outer surface of the ear. The auricle collects all the sound waves and directs it to the auditory canal.
On reaching the eardrum, sound waves produce vibration in the eardrum which in result sets all the ear ossicles into vibration. Ear ossicles is a collective name for all the three tiny middle ear bones that helps in the transfer of sound pressure from the air-filled chamber of the ear to the fluid-filled chamber.
Stapes is one of the three middle ear bones which is smallest in size approx 3 x 2. Stapes is like a horseshoe-shaped bone that acts as a tuning fork. It consists of a head, neck, base and two branches known as superior and inferior crus. The two crus transmit the sound vibrations from the head to the flat base. These vibrations later change to neural-electrical signals in the inner part of the ear.
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