The lower part of the skull is called the skull base. The brain rests on its inner surface. Through openings in the skull base, a total of twelve cranial nerves and blood vessels enter the neck as well as the facial skull. What is the base of the skull? The skull base represents a cranial … Skull Base: Structure, Function & Diseases
Stenosis comes in different forms that can affect a variety of different areas of the human body. Causes of stenosis include inflammation, tumors, and even arteriosclerosis. The best-known stenoses in this regard are ear canal stenosis, pyloric stenosis, aortic valve stenosis, carotid stenosis and coronary stenosis. Ear canal stenosis Auditory canal stenosis is a narrowing … Stenosis: Causes, Symptoms & Treatment
The Bing test is one of several well-known subjective hearing test procedures that use certain tuning fork tests to detect whether a unilateral sound conduction or sound perception disorder is present when hearing is diminished. The Bing test uses the difference in hearing sensation between bone and airborne sound when the external auditory canal is … Bing Test: Treatment, Effect & Risks
The cytoskeleton consists of a dynamically variable network of three different protein filaments in the cytoplasm of cells. They provide structure, strength, and intrinsic mobility (motility) to the cell and to organizational intracellular entities such as organelles and vesicles. In some cases, the filaments project out of the cell in the form of cilia or … Cytoskeleton: Structure, Function & Diseases
Definition The eardrum, also called tympanic membrane (Membrana tympani), is an essential part of the sound conducting apparatus of the human ear and forms the boundary between the external auditory canal and the middle ear. Anatomy The round to longitudinal oval eardrum measures about 9-11mm in its longest diameter and is only 0.1mm thick. Its … Eardrum
Diseases of the eardrum Due to its small thickness and its sensitive structure, the eardrum is quite susceptible to injuries. Hard objects can cause direct trauma (perforation). Indirect injuries in the form of ruptures of the eardrum (rupture) can occur as a result of blows to the ear or nearby explosions (so-called barotrauma). In this … Diseases of the eardrum | Eardrum
Eardrum vibrates It is part of the regular function of the eardrum that it is set into vibration and oscillation by sound waves. Normally, these vibrations are not noticeable. However, in the context of certain diseases, symptoms such as noticeable vibration, humming and other disturbing noises in the ear can occur. The causes can be … Eardrum vibrates | Eardrum
In acoustics, localization is the recognition of the direction from which a sound comes in three-dimensional space and the recognition of the distance of the sound source. Localization is based on directional hearing with both ears (binaural) and distance hearing, which is also possible by hearing with one ear (monaural). Localization is a passive process … Localization: Function, Tasks, Role & Diseases
The superficial temporal artery is the last upper portion of the external carotid artery in humans. The superficial temporal artery supplies blood to the upper half of the head and extends from the ear to the temple. The superficial temporal artery is where the pulse is usually taken in the zygomatic region. What is the … Superficial Temporal Artery: Structure, Function & Diseases
The Rydel-Seiffer tuning fork is an (almost) normal tuning fork with fundamental frequencies of 64 and 128 Hz, the natural C and c vibrations, which differ slightly from the concert pitch vibration commonly used today, which is based on the concert pitch a at 440 Hz. The Rydel-Seiffer tuning fork is used to diagnose functional … Rydel-Seiffer Tuning Fork: Applications & Health Benefits
Phoniatrics forms a separate medical specialty, which until 1993 was a subspecialty of otolaryngology (ENT). Phoniatrics deals with hearing, voice, and speech disorders, as well as swallowing difficulties, and carries strong interdisciplinary characteristics. Together with pediatric audiology, which deals primarily with problems in children’s voice and speech development and hearing perception, phoniatrics establishes an independent … Phoniatrics: Treatment, Effects & Risks
In order for us to hear sounds, a finely tuned interaction of different areas of the inner ear is necessary. In this process, the cochlea is the switching point to the brain. What is the cochlea? The cochlea is the actual hearing organ in the inner ear. It is made up of special hair sensory … Auditory Cochlea: Structure, Function & Diseases