Podcast
Questions and Answers
What is the primary composition of perilymph in the cochlea?
What is the primary composition of perilymph in the cochlea?
- Similar to plasma (correct)
- Similar to intracellular fluid
- High in sodium
- High in potassium
Which statement regarding endolymph in the cochlear duct is correct?
Which statement regarding endolymph in the cochlear duct is correct?
- It has a high concentration of potassium. (correct)
- It is secreted by vascular tissues.
- It is similar to plasma in composition.
- It has a high concentration of sodium.
How does the concentration of sodium in intracellular fluid compare to that in endolymph?
How does the concentration of sodium in intracellular fluid compare to that in endolymph?
- Endolymph has no sodium present.
- Both have identical sodium concentrations.
- Intracellular fluid has a higher concentration of sodium than endolymph. (correct)
- Endolymph has a higher concentration of sodium than intracellular fluid.
Which of the following accurately describes a characteristic of endolymph?
Which of the following accurately describes a characteristic of endolymph?
What distinguishes the ionic composition of endolymph from that of perilymph?
What distinguishes the ionic composition of endolymph from that of perilymph?
What is similar to plasma in the cochlea?
What is similar to plasma in the cochlea?
Endolymph has a high concentration of sodium ions (Na+).
Endolymph has a high concentration of sodium ions (Na+).
What type of fluid is endolymph in terms of its composition?
What type of fluid is endolymph in terms of its composition?
The fluid found in the vestibular and tympanic duct is called __________.
The fluid found in the vestibular and tympanic duct is called __________.
Match the following fluids with their characteristics:
Match the following fluids with their characteristics:
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Study Notes
Cochlea Anatomy Overview
- The cochlea contains two types of fluids: perilymph and endolymph.
Perilymph
- Found in the vestibular and tympanic ducts.
- Composition is similar to plasma.
Endolymph
- Located in the cochlear duct.
- Secreted by epithelial cells that line the cochlear duct.
- Has a composition similar to intracellular fluid.
- Exhibits a high concentration of potassium ions ([K+]).
Fluid Composition Comparison
- Endolymph is characterized by high [K+], contrasting with higher sodium ([Na+]) concentrations found in intracellular and extracellular fluids.
Cochlea Anatomy Overview
- The cochlea contains two types of fluids: perilymph and endolymph.
Perilymph
- Found in the vestibular and tympanic ducts.
- Composition is similar to plasma.
Endolymph
- Located in the cochlear duct.
- Secreted by epithelial cells that line the cochlear duct.
- Has a composition similar to intracellular fluid.
- Exhibits a high concentration of potassium ions ([K+]).
Fluid Composition Comparison
- Endolymph is characterized by high [K+], contrasting with higher sodium ([Na+]) concentrations found in intracellular and extracellular fluids.
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