The malleus is attached to the:
1. Tympanic membrane and incus.
2. Stapes and cochlea.
3. Semicircular canals and organ of Corti.
4. Pinna and tympanic membrane.
Tympanic membrane and incus.
Rationale: The malleus is located in the middle ear and attaches to tympanic and incus. When the tympanic membrane vibrates, it causes the malleus to vibrate, which in turn causes the incus to vibrate. The stapes is located in the middle ear, but the cochlea is located in the inner ear. The semicircular canals and organ of Corti are located in the inner ear. The pinna is part of the outer ear.
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