Different designs of circulatory systems Humans: systemic and pulmonary system (and other mammals) 1 st pump lungs 2 nd pump body 1 st pump Fish: 2 chambers in the heart (1 pump) The blood travels through 1 circuit The blood goes to the gills (and picks up 02).
(The blood; travels; through 1 circuit) (The blood; goes; to the gills) (The blood; picks up; 02)
The blood The blood The blood
travels goes picks up
through 1 circuit
to the gills
02