anatomy veteriner about hearing sense

1. Sense of Hearing
CASE METHOD PRESENTATION

2. Group 3 Members
Dewi Ann Liberty
Opanto
2202101010078
Nasywa Anindya
Pranoto
2202101010081
Alya
Mardhatillah
2202101010080
Wafiq Nasna
Thamrin
2202101010087

3. Table Of Contents
01 03
Anatomical location of the
auditory organs.
Anatomy
02
Function
Function of the hearing
organ for animals.
The structure of the organ
of hearing in animals.
Structure
04
The process of auditory
stimulation.
Process

4. The hearing organ captures sounds from the surrounding environment, and
the captured sounds are then converted into electrical signals that are
delivered to the brain via nerves. It allows animals to understand what is
happening in the surrounding environment. Hearing can be used to locate
other animals; therefore, it is useful for hunting and predator avoidance.
Hearing can also be used to communicate. In some animals that use
echolocation, hearing functions as an echo receiver.
Hearing Organ Function

5. In this case study, we will discuss one case regarding the sense of hearing,
namely acoustic trauma.
In this case, it is caused by noise, one of which disrupts the working
mechanism of the hearing organs. As we know, the noise level of every living
thing is different. And in the animal kingdom, too, there are differences.
Examples of traffic noise reduce cognitive performance, including inhibitory
control, motor learning, spatial memory and social learning. This excessive
noise can also cause deafness.
Hearing Organ Case

6. The Structure of Organum
Vestibulocochlearis

7. Earlod (auricle), Ear
Canal (Meatus acusticus
externa) and ends with
the tympanic
membrane.
There is a vestibule,
semicircular ducts, and
cochlear ducts.
AURIS
EXTERNA OR
OUTER
There is a tympanic cavity which is
separated from the external ear
through the tympanic membrane,
connected to the nasopharynx
through the pharyngeal tubae
auditiviae (eustacious canal).
AURIS
MEDIA OR
MIDDLE
AURIS
INTERNA OR
INNER
Anatomy of the hearing organs

8. The auricle (pinna) and ear canal collect and focus
the sound waves on the eardrum (tympanic
membrane).
The ear canal contains ceruminous glands that has
secretion like a candle to protect the ear from
foreign objects
And it will end in tympanic membrane or the
eardrun.
Outer or Auris
Externa
Good Dog!

9. Middle or Auris Media
There is a room, namely the tympanic cavity, which contains
air that separated from the outer ear through the tympanic
membrane
In the tympanic cavity have Ossicula auditus named
malleus, incus, and stapes. Which the stape base
interlocked with fenestra ovale or oval window as a.
Middle ear is connect with the nasopharynx
through pharyngeum tubae auditivia (Eustacious
canal).

10. Vestibule Cochlearis
Ducts
Semicircularis
Ducts
Vestibulecochlearis
Nerve
Have a couple membrane sac:
Saccule sac. and Utricle sac.
Between the two sacs there is a
macula which functions to detect
linear movements that are wrapped
in otoliths or ear stones to detect
body position.
Have 3 ducts namely:
The anterior semicircularis ducts
The posterior semicircularis ducts
The lateral semicircularis ducts
There has cochlea and inside the cochlea
has corti organ as the receptor of
hearing. In this organ made by hair cells in
inside and outside, and also have basilaris
membrane and attached to the tectorial
membrane by means of stereocilia. In this
ducts have perilimph (fluid in the vestibular
duct) and endolymph (fluid in the
cochlearis duct).
That have branched:
Ramus vestibule for balance
Ramus cochlearis for hearing
Inner or auris Interna

11. In this case, the target organ disturbed by noise is the middle and inner ear. This
depends on the frequency of the waves or the size or strength of the sound waves
received by the constituent organs. In the inner ear, the cochlear is targeted
because the cochlear contains the organ of Corti. Inside the organ of Corti, there
are hair cells that receive sound vibrations. The stronger the vibration received
and the longer it is due to noise, it causes injury to the cochlear and affects the
hair cells of the organ of Corti. If the vibration gets more substantial, this can even
damage the eardrum and the supporting bone in the middle ear. So it eventually
disrupts the metabolism of hearing and eventually loses hearing permanently.
Hearing Organ Case

12. Anatomical Location
Organum Vestibulocochleare

13. Auris Externa
Auricle (pinna) or the earlob
Meatus acusticus externa or the ear
canal
ends with tympani membrane
1.
2.
3.

14. Auris Media
Tympani membrane
Cavum tympani, contains:
1.
2.
Malleus, incus, and stapes
3.Stapes
Fenestra ovale (oval window)
4.Nerve VII

15. Auris Interna
Cochlea contains corti organ,
cochlea ducts, tympanic ducts,
and vestibule ducts.
Semicircular ducts cintains
anterior, posterior, and
lateral ducts.
Vestibule that contains
saccule sac., utricle sac., and
Maculae

16. In chochlea (Ramus
cochlearis) for hearing.
In Vestibulum (Ramus vestibule)
and canalis semicircularis for
balance.
Divided into 2 parts

18. Hearing Organ
Mechanism

19. Hearing Mechanism
The vibrations reach the cochlear
duct in the inner ear, where they
are converted into hydraulic
pressure by the perilymph and
endolymph.
03
02
The vibrations are
transmitted by the three
ear bones to the inner ear
through the oval window.
01
Sound vibrations are
collected in the ear canal
through the external acoustic
meatus to the tympanic
membrane so that they also
vibrate and resonate.

20. The electric current will be carried by the
cochlear ramus to the encephalon through
several stages..
06
05
So that the stereocilia bend,
rotate, or are pulled according to
the wave vibrations that produce
electricity in the hair cells.
04
This hydraulic pressure creates
waves in the basilar membrane
that raise or lower the organ of
Corti which is attached to the
tectorial membrane by means of
the stereocilia..

21. Pathway Electrical current
carried by the cochlear ramus
Radiatio
accusticus
Corpus
Geniculatum
mediale
Colliculus
posterior
Temporalis
cortex cerebri
lobe

23. .
.
.
.
.
The Balance
Mechanism

24. Thank you!