Helpful tips

What is the structure of the organ of Corti?

What is the structure of the organ of Corti?

The organ of Corti is made up of hair cells and supporting cells (purple and blue, respectively) that sit on a flexible basilar membrane which is anchored to the bony shelf on the left and a ligament (not shown) on the right.

What kind of conditions can cortisone be used for?

Cortisone is a steroid that prevents the release of substances in the body that cause inflammation. Cortisone is used to treat many different conditions such as allergic disorders, skin conditions, ulcerative colitis , arthritis, lupus , psoriasis , or breathing disorders.

Which is the most vulnerable organ of Corti?

Sensory Cell Degeneration/Death Within the spiral organ (organ of Corti) are the outer and inner sensory hair cells, as well as spiral ganglion neurons. The sensory hair cells are the most vulnerable to injury. Damage to the sensory cells or ganglion cells results in impaired function that is often permanent.

How are sensory hair cells arranged in the Corti?

The organ of Corti of the mammalian inner ear contains sensory hair cells and supporting cells in the auditory sensory epithelia. These cells are arranged to form a checkerboard-like cellular pattern. However, cellular and molecular mechanisms that produce this characteristic arrangement of cells had remained unknown for a long time.

Why is the organ of Corti bigger than the cochlea?

This difference in size is consistent with the fact that different frequencies of sound result in greater vibrations of the organ of Corti depending on where along the length of the cochlea you are measuring.

Which is larger the organ of Corti or the basilar membrane?

Figure 5 shows a short section of the organ of Corti as it spirals in the cochlea. The organ of Corti is larger and the basilar membrane on which it sits is longer as it gets further away from the base of the cochlea.

What do the Green and blue arrows mean in Corti?

The blue arrows indicate cell bodies of two OHCs, the asterisk indicates the tunnel of Corti, which is crossed by the nerve fibres (green arrows). If playback doesn’t begin shortly, try restarting your device.