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The Eustachian tube which connects middle ear to pharynx is found in
- a)All the land vertebrates in general
- b)All vertebrates
- c)Amphibians only
- d)Mammals only
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
The Eustachian tube which connects middle ear to pharynx is found ina)...
Eustachian tube is found in All the land vertebrates in general.
Explanation:
- The Eustachian tube is a narrow tube-like structure that connects the middle ear cavity to the nasopharynx (the upper part of the throat) and helps to equalize the air pressure on either side of the eardrum.
- The middle ear cavity is an air-filled space located behind the eardrum and contains the three tiny bones of the ear that transmit sound waves from the eardrum to the inner ear.
- In aquatic vertebrates such as fish, the middle ear and the inner ear are located within the skull bone, and the pressure within the ear is regulated by a specialized organ called the swim bladder.
- However, in terrestrial vertebrates such as reptiles, birds, and mammals, the middle ear is separated from the outer ear by the eardrum, and the air pressure within the middle ear is regulated by the Eustachian tube.
- Therefore, the Eustachian tube is found in all the land vertebrates in general, but not in aquatic vertebrates such as fish.
Explanation:
- The Eustachian tube is a narrow tube-like structure that connects the middle ear cavity to the nasopharynx (the upper part of the throat) and helps to equalize the air pressure on either side of the eardrum.
- The middle ear cavity is an air-filled space located behind the eardrum and contains the three tiny bones of the ear that transmit sound waves from the eardrum to the inner ear.
- In aquatic vertebrates such as fish, the middle ear and the inner ear are located within the skull bone, and the pressure within the ear is regulated by a specialized organ called the swim bladder.
- However, in terrestrial vertebrates such as reptiles, birds, and mammals, the middle ear is separated from the outer ear by the eardrum, and the air pressure within the middle ear is regulated by the Eustachian tube.
- Therefore, the Eustachian tube is found in all the land vertebrates in general, but not in aquatic vertebrates such as fish.
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The Eustachian tube which connects middle ear to pharynx is found ina)All the land vertebrates in generalb)All vertebratesc)Amphibians only d)Mammals only Correct answer is option 'A'. Can you explain this answer?
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