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Eardrum
The tympanic membrane,
colloquially known as the
eardrum, is a thin membrane
that separates the external
ear from the middle ear. Its
function is to transmit
sound from the air to the
ossicles inside the middle
... > full story
Auditory system
The auditory system is the
sensory system for the sense
of hearing. The sound waves
enter the ear canal, a
simple tube (but one which
amplifies sounds that are
between 3 and 12 kHz). At
the far end of the ear canal
... > full story
Tinnitus
Tinnitus is a phenomenon of
the nervous system connected
to the ear, characterised by
perception of a ringing or
beating sound (often
perceived as sinusoidal)
with no external source.
This sound may be a quiet
... > full story
Hearing impairment
A hearing impairment is a
decrease in one's ability to
hear (i.e. perceive auditory
information). While some
cases of hearing loss are
reversible with medical
treatment, many lead to a
permanent disability (often
... > full story
Browse Reference Articles
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Equilibrioception
Equilibrioception or sense of balance is one of the physiological senses. It allows humans and animals to walk etc. without falling. Some animals are better in this than humans, for example allowing ... > more -
Sensory system
A sensory system is a part of the nervous system responsible for processing sensory information. A sensory system consists of sensory receptors, neural pathways, and parts of the brain involved in ... > more -
Ultrasound
Ultrasound is sound with a frequency greater than the upper limit of human hearing, approximately 20 kilohertz (20,000 hertz). Some animals, such as dogs, dolphins, bats, and mice have an upper limit ... > more -
Tensor tympani
The tensor tympani muscle originates from the cartilagenous wall of the Eustachian tube (also called the auditory tube) and the bony wall surrounding the ... > more -
Service dog
A service dog is a type of assistance dog that is specially trained to help people who have disabilities other than visual or hearing impairment. Examples of these include Psychiatric service dogs, ... > more -
Human physiology
Human physiology is the science of the mechanical, physical, and biochemical functions of normal humans or human tissues or organs. The principal level of focus of physiology is at the level of ... > more -
Infectious Diseases
Attention Deficit Disorder
Healthy Aging
Sports Medicine
Heart Disease
Cystic Fibrosis
Bacterial meningitis
Bacterial meningitis is a condition in which the dural layers lining the brain (the meninges) have become inflamed. The classic symptoms of bacterial meningitis are similar to those of other forms of ... > more -
Inflammation
Inflammation is the first response of the immune system to infection or irritation and may be referred to as the innate cascade. Inflammation is characterised by the following quintet: redness ... > more -
Human skeleton
The human skeleton is made of individual or joined bones, supported and supplemented by a structure of ligaments, tendons, muscles, cartilage and other organs. The skeleton is not unchanging; it ... > more
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