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What is the function of the dorsal blood vessel in the cockroach?

1) Transporting hemolymph
2) Excreting waste products
3) Regulating body temperature
4) Digesting food

Answer :

Final answer:

The dorsal blood vessel in the cockroach functions to transport hemolymph, which circulates nutrients, hormones, and wastes throughout the insect's body, facilitated by contractions of regions within the vessel known as "hearts."

Explanation:

The function of the dorsal blood vessel in the cockroach is transporting hemolymph. In the arthropod body, including cockroaches, a central cavity known as the hemocoel is present. The fluids within this hemocoel, called hemolymph, are moved by the contractions of the tubular dorsal blood vessel, which possesses regions known as "hearts."

Unlike the human circulatory system, which uses blood to transport oxygen and nutrients, the hemolymph in cockroaches and other arthropods is primarily involved in the transport of nutrients, hormones, and wastes throughout the body.

This system is a crucial component of the cockroach's internal physiology, allowing for the distribution of essential substances without the hemolymph necessarily carrying oxygen as it does in human blood.

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