The cell wall<span> and the </span>central vacuole<span> help to support the plant cell and help it maintain its shape.</span>
Explanation:
The major blood vessels that are connected to the heart include the aorta, the superior vena cava, the inferior vena cava, the pulmonary artery (which takes oxygen-poor blood from the heart to the lungs, where it is oxygenated), the pulmonary veins (which bring oxygen-rich blood from the lungs to the heart) and the coronary arteries (which supply blood to the heart muscle).
Each human cell contains 46 chromosomes.
Unicellular has one singular cell, multicellular has more than one
