Anatomy Of The Inner Ear

Explanation
Perilymph is the fluid that fills the vestibular and cochlear portions of the bony labyrinth and surrounds the membranous labyrinth. It acts as a protective cushion for the delicate structures of the inner ear and helps in transmitting sound vibrations and maintaining balance. Perilymph is similar in composition to cerebrospinal fluid and plays a crucial role in the functioning of the auditory and vestibular systems.

Explanation
The basilar membrane is the correct answer because it is the membrane that separates the scala media from the scala tympani and supports the organ of Corti. The organ of Corti is responsible for converting sound vibrations into electrical signals that can be interpreted by the brain. The basilar membrane plays a crucial role in this process by vibrating in response to different frequencies of sound, allowing for the detection of different pitches. It is a vital component of the inner ear and is essential for hearing.

Explanation
The cochlear duct containing the organ of Corti is called the scala media.

Explanation
The three loops within the vestibular canal are called the semicircular canals. These canals are part of the inner ear and are responsible for detecting rotational movements of the head. Each canal is oriented in a different plane, allowing for detection of movement in all directions. The semicircular canals contain fluid and hair cells that sense the movement of the fluid as the head rotates, sending signals to the brain to help maintain balance and coordinate eye movements.

Explanation
The tectorial membrane is a structure located in the scala media above the organ of Corti. It is a gelatinous membrane that extends over the hair cells in the cochlea. The tips of the outer hair cells are embedded within this membrane. This arrangement allows the tectorial membrane to move in response to sound vibrations, stimulating the hair cells and contributing to the process of auditory transduction.

Explanation
The vestibule is the cavity of the inner ear that contains the organs of equilibrium. It is responsible for detecting changes in head position and linear acceleration, helping to maintain balance and spatial orientation. The organs of equilibrium within the vestibule include the utricle and saccule, which are responsible for detecting changes in linear acceleration, and the semicircular canals, which detect changes in rotational movement. Together, these organs work to provide the brain with information about the body's position and movement in space.

Explanation
Reissner's Membrane is the correct answer because it is the membrane that separates the scala vestibuli from the scala media in the inner ear. This membrane is important for maintaining the fluid balance and pressure within the cochlea, which is essential for proper hearing function.