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What are the two stones on the head of a yellowtail? What do they do?

In the ear cavity of the fish flings, grows a calcareous otolith, the shape and size of which is very inconsistent among the various fish. In most bony fish, the otoliths are in small chunks, and those of the yellowtail in particular are especially large, often as big as a small fingernail, and are so conspicuous that they have been given the name of stoneheads.

The otolith is a delicate organ, when the external sound waves reach the fish body, the lymph in the inner ear occurs the same oscillation, this oscillation stimulates the otolith and the sensory cells, and then by the otolith through the nerves to reach the brain, hearing occurs.

The otoliths not only control hearing, but also maintain the balance of the fish body. The inner ear has high level sensory cells, which contain lymphatic fluid. If the body is unbalanced, the lymphatic fluid and otoliths immediately compress the sensory cells, which then report to the brain to take balancing measures.

Expanded:

. p>Note:

1, suitable for the crowd: the general public is suitable for consumption. Anemia, dizziness, and those who are weak are more suitable.

2, appropriate: dizziness, insomnia, anemia, and long illness stomach deficiency food reduction is appropriate to eat.

3, contraindication: acute and chronic skin disease patients avoid eating; bronchial asthma, cancer, lymphatic tuberculosis, lupus erythematosus, nephritis, thrombotic occlusive vasculitis patients avoid eating.

4, yellowtail + buckwheat = indigestion. Yellowtail taste sweet and flat with a small toxicity, eating hard to digest, buckwheat cold and difficult to digest, eating hot wind, both for the indigestible things, eating hard to digest, have hurt the stomach and intestines.

Baidu Encyclopedia - Yellow Croaker

Baidu Encyclopedia - Otolith