Arterias, venas y capilares.
Answer:
ok so i think the X shape is a chromosome, that blank space in the big spot is calleed a nucleas. The arrow on the top right is a cell, the bottom right is base pair, the bottom left is dna and the top middle is called the gene.
Explanation:
It is a catecholamine. It is also known as adrenaline. It will increase the heart rate and other flight or fight responses.
