By What Mechanism Is Phosphorylase Kinase Activated by Ca²⁺ Levels

question 32

Essay

By what mechanism is phosphorylase kinase activated by Ca²⁺ levels of 1 μM?

---

Definitions:

Ossicles

The three small bones located in the middle ear, named the malleus, incus, and stapes, that play a key role in transmitting sound vibrations to the inner ear.

Middle Ear

The portion of the ear containing the ossicles, which connect the eardrum to the oval window and amplify sound waves.

Cochlea

The fluid-filled, snail-shaped, bony chamber in the inner ear that contains the basilar membrane and its hair cells (the sound receptors).

Basilar Membranes

A structure in the cochlea of the inner ear that vibrates in response to sound, playing a key role in the sensory coding of auditory signals.