The primary difference between an artery and a vein is that arteries are blood vessels that carry blood away from the heart, while veins are blood vessels that carry blood toward the heart.

Veins are large return vessels of the body which carry blood to the heart. They can be considered as blood return counterparts of arteries. Nerves are bundles of axons constituting the peripheral nervous...

Octopus and Jelly fish are both invertebrates. Octopus belongs to the group of cephalopods. Cephalopod means feet around the head. Jellyfish belongs to the Phylum Cnidaria and Class Scyphozoa. Both differ in...

The abdomen is known as the part of body which lies between the chest (thorax) and the pelvis. The main function of the abdomen is to house the alimentary tract and organs that are responsible for absorptions...