The main function of the right side of the human heart <span> receives de-oxygenated blood from the body tissues (from the upper- and lower-body via the superior vena cava and the inferior vena cava, respectively) into the </span>right<span> atrium. This de-oxygenated blood passes through the tricuspid valve into the </span>right<span>ventricle</span>
Answer and Explanation:
B. Coronary artery
On the surface of the heart, there's coronary arteries. It supplies oxygen and blood to the heart muscle. The major blood vessels that enter the heart are the superior vena cava, the inferior vena cava, and the pulmonary veins.
False
Muscles are only able to contract or relax. This is why they need complementary muscles. For example, the bicep can raise the forearm, but cannot lower it. For that, the tricep is needed.
One type of atom, such as hydrogen is called an element. An element is a pure substance, made up of only one type of atom. You can find the elements on the periodic table of elements, where they are listed.
