Subneural blood vessel in an earthworm bifurcates and then continues as _________
Subneural blood vessel in an earthworm bifurcates and then continues as _________
The correct option is B lateral oesophageal
Subneural vessel is a long but thin vessel extending from anterior 14th segment up to the last segment situated mid-ventrally below the ventral nerve cord. It is a collecting blood vessel and the direction of flow of blood in this vessel remains from anterior to posterior side. This sub-neural vessel bifurcates in the 14th segment to form two lateral oesophageals. These vessels are considerably thick and situated along the ventrolateral margins of the alimentary canal in the anterior thirteen segments.
Supra oesophageal is the shortest longitudinal vessel extending from 9th to 13th segment situated above the stomach.
Dorsal blood vessel runs mid-dorsally above the alimentary canal from the posterior to the anterior end of the body.
The commissural vessels form a loop behind each septum and they receive blood from the body wall, nephridia and prostate glands. The commissural vessels connect dorsal vessel and subneural vessel after the 14th segment.
lateral oesophageal
Subneural vessel is a long but thin vessel extending from anterior 14th segment up to the last segment situated mid-ventrally below the ventral nerve cord. It is a collecting blood vessel and the direction of flow of blood in this vessel remains from anterior to posterior side. This sub-neural vessel bifurcates in the 14th segment to form two lateral oesophageals. These vessels are considerably thick and situated along the ventrolateral margins of the alimentary canal in the anterior thirteen segments.
Supra oesophageal is the shortest longitudinal vessel extending from 9th to 13th segment situated above the stomach.
Dorsal blood vessel runs mid-dorsally above the alimentary canal from the posterior to the anterior end of the body.
The commissural vessels form a loop behind each septum and they receive blood from the body wall, nephridia and prostate glands. The commissural vessels connect dorsal vessel and subneural vessel after the 14th segment.
