haemal system造句

• The water vascular system, haemal system and perihaemal system form the tubular coelomic system.
• Crinoids also possess a separate "'haemal system "', consisting of fluid-filled sinuses within the connective tissue.
• The haemal coelom ( or haemal system, the " haemal " being a misnomer ), a perivisceral coelom, a gonadal coelom and often also a perihaemal coelom ( or perihaemal system ).
• In the larger species, additional vessels run above and below the intestine and are connected by over a hundred small muscular ampullae, acting as miniature hearts to pump blood around the haemal system.