| 21. | When expanded, at most 40 tentacles can be observed on the inside surface of the branchial wall.
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| 22. | It has a pale red or transparent colour, with red branchial structures on its dorsal and ventral sides.
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| 23. | The efferent signal to the musculature of the pharynx is carried by the branchial motor fibers of the vagus nerve.
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| 24. | The system is built around an appendage of each branchial heart, which is essentially an extension of its pericardium.
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| 25. | By day 10.5, the branchial arch and limbs also begin to express " Osr1 ".
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| 26. | The action of the branchial hearts is necessary for the production of primary urine in these appendages via pressure filtration.
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| 27. | Branchial hearts may have evolved from the pericardial glands of nautiloids, such as those still found in modern nautiluses.
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| 28. | Alt = Diagram labeling siphon, intestine, nidamental gland, accessory nidamental gland, renal pore, and branchial heart.
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| 29. | Persons with BOR syndrome also present with hearing loss, branchial fistulas or cysts, malformed ears, and lacrimal stenosis.
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| 30. | Each of these bundles consists of a single row of radioles attached to a branchial stalk and curved into a semicircle.
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