Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
d. The cochlear duct is filled with perilymph.
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Step 1: Understand the anatomy of the cochlea, which is a part of the inner ear involved in hearing.
Step 2: Identify the three main fluid-filled compartments within the cochlea: the scala vestibuli, scala media (cochlear duct), and scala tympani.
Step 3: Recall that the scala vestibuli and scala tympani are filled with perilymph, a fluid similar to extracellular fluid.
Step 4: Remember that the cochlear duct, also known as the scala media, is filled with endolymph, a fluid with a unique ionic composition, high in potassium and low in sodium.
Step 5: Based on the above information, determine whether the statement is true or false and correct it if necessary.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Cochlear Duct
The cochlear duct, also known as the scala media, is a fluid-filled cavity within the cochlea of the inner ear. It is part of the auditory system and plays a crucial role in the process of hearing by housing the organ of Corti, which contains hair cells that transduce sound vibrations into neural signals.
Perilymph and endolymph are two distinct types of fluids found in the inner ear. Perilymph fills the scala vestibuli and scala tympani, while endolymph fills the cochlear duct. The composition and ionic concentrations of these fluids are critical for the proper functioning of the auditory and vestibular systems.
In scientific contexts, true/false statements are used to assess understanding of factual information. When a statement is marked false, it is essential to provide a corrected version that accurately reflects scientific knowledge. This process reinforces learning and clarifies misconceptions.