In this article we will discuss about the nervous system of arthropods with the help of a suitable diagram. Arthropods have a ladder like nervous system, with a double chain of segmental ganglia running along the ventral surface. The double chains part to encircle the esophagus, ending in a pair of dorsal ganglia. The dorsal ganglia are enough larger than [...]
Learn about the comparison of excretory system in various Arthropods. Comparison: Arthropod # Macrobrachium: 1. The excretory organs consist of a pair of cream coloured antennary glands with their ducts, a median renal sac and a transverse communicating duct. It also performs the function of osmoregulation (Fig. 46A). 2. The antennary gland is placed in the coxa of the second [...]
Learn about the comparison of circulatory system in various arthropods. Comparison: Arthropod # Macrobrachium: 1. Heart of Pericardium: The heart (Fig.41) is a hollow organ, somewhat triangular in outline, and with thick muscular walls. It is situated dorsally at the posterior end of the cephalothorax. It is lodged in a special haemocoel, the pericardial cavity, the walls of which form [...]