Vertebrates have a ventral muscular heart with two to four chambers, kidneys for excretion and osmoregulation, and paired appendages (fins or limbs).
Vertebrates have a ventral muscular heart with two to four chambers, kidneys for excretion and osmoregulation, and paired appendages (fins or limbs).
| Text | vertebrates have a ventral muscular heart with two, three or four chambers, kidneys for excretion and osmoregulation and paired appendages which may be fins or limbs |
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