Question

In which blood vessel blood flows posterior end to anterior end

• A. Ventrablood vessel
• B. Dorsal blood vessel
• C. Sub neural blood vessel
• D. Lateral oesophagal vessels

Answer 1

The correct option is B Dorsal blood vessel

Dorsal blood vessel runs mid-dorsally above the alimentary canal from the posterior to the anterior end of the body. It is the thickest vessel with contractile muscular walls visible from outside as a dark line through the thin and semi-transparent body wall. The direction of flow of blood in this vessel remains from behind to forward (from posterior to anterior).

So, the correct option is 'Dorsal blood vessel'.