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branchial blood vessel
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branchial blood vessel

anatomy
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Quick Summary

The term "branchial blood vessel" refers to blood vessels associated with the gills, particularly in aquatic animals like fishes. In embryonic development, these vessels are crucial for oxygenating blood.

In fishes, the arterial system includes afferent (leading to) and efferent (leading from) branchial blood vessels. These form arterial arches that loop between the gills. The ventral part of each arch brings deoxygenated blood from the heart to the gills, while the dorsal part collects oxygenated blood from the gill capillaries and carries it to the dorsal aorta. This creates a one-way flow system where the heart pumps deoxygenated blood to the gills for oxygenation before it's distributed to the body.1

In embryonic development, arteries cranial to the heart develop from paired aortic arches that course within the branchial arches, connecting the ventral aorta to paired dorsal aortas.2

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4 Britannica Sources
  1. prenatal development - Blood vessels
  2. circulatory system - Fishes
  3. circulatory system - Fluid compartments
  4. circulatory system - Circulation in agnathans

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