Identifying the Functions of the Structures of the Circulatory
System
Identify the function of the labeled structures.
A
B
C
D
connects arteries and veins
brings blood back to the heart
carries blood away from the heart
pushes blood into the arteries

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.