A diagram of ear is given here. Identify the parts to and select the correct option. Label in the diagram
A-Temporal bone, B-Malleus, C-Incus, D-Stapes, E-Cochlea, F-Eustachian tube, G-Tympanic membrane, H-External auditory canal
— Concept: This question tests your knowledge of the anatomy of the human ear, specifically identifying its various parts…Concept: This question tests your knowledge of the anatomy of the human ear, specifically identifying its various parts from a given diagram.
Why (A) is correct:
- A - Temporal bone: This bone forms the side and base of the skull, housing the ear structures.
- B - Malleus: The outermost of the three ossicles, attached to the tympanic membrane.
- C - Incus: The middle ossicle, connecting the malleus and stapes.
- D - Stapes: The innermost ossicle, fitting into the oval window of the inner ear.
- E - Cochlea: The spiral-shaped, fluid-filled structure of the inner ear responsible for hearing.
- F - Eustachian tube: Connects the middle ear to the nasopharynx, equalizing pressure.
- G - Tympanic membrane (eardrum): Vibrates in response to sound waves.
- H - External auditory canal: The passage leading from the outer ear to the tympanic membrane.
Why other options are wrong:
- B) Incorrectly identifies A as Tympanic membrane and G as Temporal bone.
- C) Incorrectly identifies B as Incus and C as Malleus, and G as Temporal bone.
- D) Incorrectly identifies D as Cochlea and E as Stapes, and G as Tympanic membrane.
NEET Tip: Remember the order of ossicles from outer to inner as Malleus, Incus, Stapes (MIS). The Eustachian tube connects the middle ear to the pharynx.
Correct Answer: (A)
A-Temporal bone, B-Malleus, C-Incus, D-Stapes, E-Cochlea, F-Eustachian tube, G-Tympanic membrane, H-External auditory canal