Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: January 22, 2025
At the lowest stage of this group, in the Cyclostomes, we find for the first time the differentiation of the vasorium into two sections: a system of blood-vessels proper, which convey the RED blood about the body, and a system of lymphatic vessels, which absorb the colourless lymph from the tissues and convey it to the blood.
Word Of The Day
Others Looking