In cardiac muscle cells, the electrochemical messages travel from one cell to another through which structure? A.) Gap Junctions

B.) Tight Junctions

C.) Intercalated Discs

D.) Desmosomes

the answer would be 3

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

the contamination

we are putting to many trash.