Question

प्र.10 मछलियों में ऐओर्टिक चाप का वर्णन कीजिए।
Q.10 Describe the Aortic Arches in Fishes.​

Answer 1

The aortic arches deliver deoxygenated blood to the respiratory surfaces of the gills and then distribute oxygenated blood to tissues of the head (via the carotids) and remainder of the body (via the dorsal aortae).

Explanation:-

• Among dipnoans there are four or five aortic arches that develop from the ventral aorta which supply blood to the gills.
• In the Protopterus the aortic arches retain second, third, fourth, fifth and sixth.
• The arches like the fish have afferent and efferent divisions.
• A series of six paired embryological vascular structures which give rise to the great arteries of the neck and head.

Answer 2

• The aortic arches in most fish supply deoxygenated blood to the gills' respiratory surfaces before distributing oxygenated blood to the head (through the carotids) and the rest of the body (via the dorsal aortae).
• The ventral aorta gives rise to four or five aortic arches, which feed blood to the gills in dipnoans. Second, third, fourth, fifth, and sixth aortic arches are retained in the Protopterus. Afferent and efferent divisions exist in the arches, just as they do in fish.