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I can feel my pulse on my arm or neck
vascular
The word root that applies to blood vessels is "angi-" or "vaso-".
"Blood vessels" is actually two words, but here's a good sentence. The blood vessels of a blue whale are so large that a car could drive down some of them.
You have things called arteries that carry the blood full of oxygen throughout your body. Right below your jaw you can feel your pulse. This is one of your arteries pumping blood to your brain. Once the blood has used up all of its oxygen, it is pumped back to your heart through your veins to receive more oxygen.
The generic term for contained circulatory systems is a vascular system.The word for a circulatory system in which blood is contained in vessels and circulated by the heart is the cardiovascular system.
The blood vessels are the part of the circulatory system that transports blood throughout the human body. There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart. The word vascular, meaning relating to the blood vessels, is derived from the Latin vas, meaning vessel.
I believe you are referring to the word 'arterial.' This word applies to any reference to the word 'artery.'
Capillary: A tiny blood vessel where substances are exchanged between the blood and the body cells.
Since you use the word small, these vessels are called venoules.
When people use the word vessel in relation to the cardiovascular system, they usually are referring to blood vessels like arteries, veins, or capillaries. Coronary arteries are specific blood vessels that carry oxygenated blood to the muscles (myocardium) of the heart.
Cardiovascular is a word that refers to the heart and blood vessels that form the circulatory system.