Eardrum طبلة الاذن

The eardrum, or tympanic membrane



is a thin, cone-shaped membrane that separates the external ear from
the middle ear in humans and other tetrapods. Its function is to
transmit sound from the air to the ossicles inside the middle ear, and
then to the oval window in the fluid-filled cochlea. Hence, it
ultimately converts and amplifies vibration in air to vibration in
fluid. The malleus bone bridges the gap between the eardrum and the
other ossicles.[1]
The are two general regions of the tympanic
membrane: the pars flaccida (upper region, see picture on right) and the
pars tensa. The pars flaccida consists of two layers, is relatively
fragile, and is associated with eustachian tube dysfunction and
cholesteatomas. The larger pars tensa region consists of three layers:
skin, fibrous tissue, and mucosa. It is comparatively robust, and is the
region most commonly associated with perforations.[2]
Rupture or
perforation of the eardrum can lead to conductive hearing loss. Collapse
or retraction of the eardrum can also cause conductive hearing loss or
even cholesteatoma.

is a thin, cone-shaped membrane that
separates the external ear from the middle ear in humans and other
tetrapods. Its function is to transmit sound from the air to the
ossicles inside the middle ear, and then to the oval window in the
fluid-filled cochlea. Hence, it ultimately converts and amplifies
vibration in air to vibration in fluid. The malleus bone bridges the gap
between the eardrum and the other ossicles.[1]
The are two general
regions of the tympanic membrane: the pars flaccida (upper region, see
picture on right) and the pars tensa. The pars flaccida consists of two
layers, is relatively fragile, and is associated with eustachian tube
dysfunction and cholesteatomas. The larger pars tensa region consists of
three layers: skin, fibrous tissue, and mucosa. It is comparatively
robust, and is the region most commonly associated with perforations.[2]
Rupture
or perforation of the eardrum can lead to conductive hearing loss.
Collapse or retraction of the eardrum can also cause conductive hearing
loss or even cholesteatoma.



الاذن البشرية

abeer كتب:

The eardrum, or tympanic membrane



is a thin, cone-shaped membrane that separates the external ear from
the middle ear in humans and other tetrapods. Its function is to
transmit sound from the air to the ossicles inside the middle ear, and
then to the oval window in the fluid-filled cochlea. Hence, it
ultimately converts and amplifies vibration in air to vibration in
fluid. The malleus bone bridges the gap between the eardrum and the
other ossicles.[1]
The are two general regions of the tympanic
membrane: the pars flaccida (upper region, see picture on right) and the
pars tensa. The pars flaccida consists of two layers, is relatively
fragile, and is associated with eustachian tube dysfunction and
cholesteatomas. The larger pars tensa region consists of three layers:
skin, fibrous tissue, and mucosa. It is comparatively robust, and is the
region most commonly associated with perforations.[2]
Rupture or
perforation of the eardrum can lead to conductive hearing loss. Collapse
or retraction of the eardrum can also cause conductive hearing loss or
even cholesteatoma.

is a thin, cone-shaped membrane that
separates the external ear from the middle ear in humans and other
tetrapods. Its function is to transmit sound from the air to the
ossicles inside the middle ear, and then to the oval window in the
fluid-filled cochlea. Hence, it ultimately converts and amplifies
vibration in air to vibration in fluid. The malleus bone bridges the gap
between the eardrum and the other ossicles.[1]
The are two general
regions of the tympanic membrane: the pars flaccida (upper region, see
picture on right) and the pars tensa. The pars flaccida consists of two
layers, is relatively fragile, and is associated with eustachian tube
dysfunction and cholesteatomas. The larger pars tensa region consists of
three layers: skin, fibrous tissue, and mucosa. It is comparatively
robust, and is the region most commonly associated with perforations.[2]
Rupture
or perforation of the eardrum can lead to conductive hearing loss.
Collapse or retraction of the eardrum can also cause conductive hearing
loss or even cholesteatoma.



الاذن البشرية

VERY IMPORTANT BASICS
BEST REGARDS

abeer كتب:

The eardrum, or tympanic membrane



is a thin, cone-shaped membrane that separates the external ear from
the middle ear in humans and other tetrapods. Its function is to
transmit sound from the air to the ossicles inside the middle ear, and
then to the oval window in the fluid-filled cochlea. Hence, it
ultimately converts and amplifies vibration in air to vibration in
fluid. The malleus bone bridges the gap between the eardrum and the
other ossicles.[1]
The are two general regions of the tympanic
membrane: the pars flaccida (upper region, see picture on right) and the
pars tensa. The pars flaccida consists of two layers, is relatively
fragile, and is associated with eustachian tube dysfunction and
cholesteatomas. The larger pars tensa region consists of three layers:
skin, fibrous tissue, and mucosa. It is comparatively robust, and is the
region most commonly associated with perforations.[2]
Rupture or
perforation of the eardrum can lead to conductive hearing loss. Collapse
or retraction of the eardrum can also cause conductive hearing loss or
even cholesteatoma.

is a thin, cone-shaped membrane that
separates the external ear from the middle ear in humans and other
tetrapods. Its function is to transmit sound from the air to the
ossicles inside the middle ear, and then to the oval window in the
fluid-filled cochlea. Hence, it ultimately converts and amplifies
vibration in air to vibration in fluid. The malleus bone bridges the gap
between the eardrum and the other ossicles.[1]
The are two general
regions of the tympanic membrane: the pars flaccida (upper region, see
picture on right) and the pars tensa. The pars flaccida consists of two
layers, is relatively fragile, and is associated with eustachian tube
dysfunction and cholesteatomas. The larger pars tensa region consists of
three layers: skin, fibrous tissue, and mucosa. It is comparatively
robust, and is the region most commonly associated with perforations.[2]
Rupture
or perforation of the eardrum can lead to conductive hearing loss.
Collapse or retraction of the eardrum can also cause conductive hearing
loss or even cholesteatoma.



الاذن البشرية

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