Question

the mammalian heart has:
a. 4 chambers
b. 2 chambers
c. a two-sided muscular pump
d. four-sided muscular pump
e. a and c
f. b and d

Answer 1

4 chambers is my best guess. In my biology class a frog had 3 chambers, and the rat we dissected had 4 chambers, and it was a mammal.