Your heart muscle needs its own supply of blood because, like the rest of your body, it needs oxygen and other nutrients to stay healthy. For this reason, your heart pumps oxygen-rich blood to its own muscle through your coronary arteries.
Answer:
a
Explanation:
generally there are four types of cell signaling. this a common mcq which was asked several times.
The answer is Cytoplasm.
The cytoplasm is describe as that refers to all cellular contents between the cell membrane and nucleus; consists of cytosol and organelles. The plasma membrane consists of structural components called phospholipids, proteins, and carbohydrates. Organelle is commonly referred to as the "powerhouses" of a cell called mitochondria.
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