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Related Concept Videos

Auditory Pathway01:15

Auditory Pathway

5.9K
Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
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The Cochlea01:13

The Cochlea

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The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
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Anatomy of the Ear01:16

Anatomy of the Ear

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Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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Hair Cells01:22

Hair Cells

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Hair cells are the sensory receptors of the auditory system—they transduce mechanical sound waves into electrical energy that the nervous system can understand. Hair cells are located in the organ of Corti within the cochlea of the inner ear, between the basilar and tectorial membranes. The actual sensory receptors are called inner hair cells. The outer hair cells serve other functions, such as sound amplification in the cochlea, and are not discussed in detail here.
41.8K
Assembly of Complex Microtubule Structures01:32

Assembly of Complex Microtubule Structures

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Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
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Auditory Perception01:17

Auditory Perception

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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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Related Experiment Video

Updated: Oct 4, 2025

Morphological and Functional Evaluation of Ribbon Synapses at Specific Frequency Regions of the Mouse Cochlea
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Morphological and Functional Evaluation of Ribbon Synapses at Specific Frequency Regions of the Mouse Cochlea

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Microtubule and auditory function - an underestimated connection.

Linda Bieniussa1, Ipsa Jain2, Montserrat Bosch Grau3

  • 1Department of Oto-Rhino-Laryngology, Plastic, Aesthetic and Reconstructive Head and Neck Surgery and the Comprehensive Hearing Center, University of Würzburg, Germany.

Seminars in Cell & Developmental Biology
|February 11, 2022
PubMed
Summary
This summary is machine-generated.

Microtubules are crucial for hearing by maintaining structure and transport in the cochlea's sensory cells. Research highlights their role in hearing function, emphasizing microtubule-regulating mechanisms.

Keywords:
CochleaDevelopmentInner earPosttranslational modificationsTubulinTubulin co-folding

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Area of Science:

  • Auditory Neuroscience
  • Cell Biology
  • Inner Ear Physiology

Background:

  • The organ of Corti in the cochlea is essential for hearing, converting sound into neural signals.
  • Both actin and microtubule cytoskeletons are vital for hearing, but microtubules have received less attention.
  • Microtubules are involved in cellular structure, transport, and are regulated by microtubule-associated proteins (MAPs) and molecular motors.

Purpose of the Study:

  • To review the current understanding of microtubule-regulating mechanisms in cochlear function.
  • To highlight the implications of these mechanisms for hearing.
  • To emphasize the importance of microtubules in hearing research.

Main Methods:

  • Literature review of current research on microtubules in the cochlea.
  • Analysis of the roles of tubulin posttranslational modifications and isotypes.
  • Examination of microtubule-associated proteins (MAPs) and molecular motors.

Main Results:

  • Microtubules play essential roles in maintaining the structure and function of specialized cells in the organ of Corti.
  • Tubulin modifications and isotypes significantly influence microtubule stability and function within the cochlea.
  • Microtubule-regulating mechanisms are critical for auditory signal processing.

Conclusions:

  • Microtubules are fundamentally important for hearing.
  • Further research into microtubule-regulating mechanisms is crucial for understanding cochlear function and hearing loss.
  • This review underscores the significance of microtubules in the field of hearing research.