Chapter 14

A pumping organ called a heart forces a fluid called blood through a ... The wastes then leave the sponge as the water flows out through the osculum. ... intestine, ganglion, excurrent siphon, posterior adductor muscle, gonad, stomach, nephridiumm incurrent siphon, mouth. clockwise from the top: heart, posterior adductor muscle, ganglion, anus ... ................
................