Basal Membrane

Follow the basal infoldings BI of the cells in this EM. It is wider 042065 mm and more flaccid at the cochlear apex than at the base 008016 mm.

A Brief Diagram Of The Function Of The Basilar Membrane Skeletal System Anatomy Medical Studies Audiology

The basilar membrane varies in stiffness and is stiffest nearest the oval window and floppiest near the apex.

Basal membrane. The basal lamina lamina - layers also known as the basement membrane is a specialised form of extracellular matrix. When a sound wave is transmitted to the fluid of the inner ear the basilar membrane is set in motion. The basilar membrane is a resonant structure varying systematically in width and stiffness.

What is the basal lamina. The basal membrane consists of a diffuse substance and the fibers embedded in it. It can surround cells for example muscle fibres have a layer of basal lamina around them.

As seen with the electron microscope the basement membrane is composed of two layers the basal lamina and the underlying layer of reticular connective tissue. It was demonstrated that the instrument is able to measure sub-nanometer vibration from the cochlear partition in the basal turn of the gerbil. Long membrane known as the basilar membrane which is tuned in such a way that high tones vibrate the region near the base and low tones vibrate the region near the apex.

The basal lamina lamina thin layer about 3070 nanometers in thickness is closer toand secreted bythe epithelial cells. Multi-layered extracellular structure which each epithelial tissue has on its basal side facing the connective tissue and by which the epithelial and connective tissues are linked together. This section has been translated automatically.

It serves to strengthen the epithelial layer of cells and prevents its cells from shifting deep into the connective tissue. The motion is exaggerated. The second and third to some degree spines of the first dorsal are elongated there are 9 dorsal and 8 anal rays the middle rays of the pectoral fin are branched there is a single branch in the fifth pelvic fin ray the basal membrane is 7-18 of the length of the fifth fin ray and there are 19-22 gill rakers on the outer margin of the first gill arch.

Sitting on the basilar membrane is the organ of Corti an array of hair cells with stereocilia that Read More. The underlying connective tissue attaches to the basal lamina with collagen VII anchoring fibrils and. The basilar membrane sits inside of the cochlea and contains over sensory hair cells that project axons into what eventually becomes the auditory nerve.

It lies underneath sheets of epithelial cells. Basement membrane is a thin extracellular layer that commonly consists of two layers the basal lamina lamina densa and reticular lamina. The basal lamina can be organised in three ways.

The basal membrane is the actual plasma membrane on the basal side of an epithelial cell adjacent to the basal laminabasement membrane. Computer-animated movie of the simulated motion of the basilar membrane in the human ear in response to various acoustic stimuli. Infoldings of the basolateral region of the plasma membrane are commonly found in cells engaged in active transport of fluids and ions.

These infoldings increase the surface area available for transport. The basal membrane BM velocity responses to pure tones were measured using a newly developed laser interferometer microscope that does not require placing a reflecting object on the BM.

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