Answer:
See below
Explanation:
Some A-level revision for me here, so here we go:
The most fundamental distinction is that arteries transport oxygenated blood from the heart to bodily tissue. Deoxygenated blood is carried via veins into the heart.
More specifics Large vessels called arteries divide into smaller vessels called arterioles, which then divide into capillaries, which provide oxygen to cells and remove carbon dioxide.
The capillaries eventually connect to generate Venules, which are tiny veins that combine to become veins.
The Aorta is the major Artery, while the Vena Cava is the main Vein. Think of veins and arteries as motorways (highways if you're from Freedom Land), venules and arterioles as dual carriageways (I have no idea what the American equivalent of these is), and capillaries as neighborhood streets. In essence, veins and arteries transport large volumes of blood quickly to their destinations. It travels through capillaries, venules, and arterioles to more exact places.
Function is now completed; next is structure. This material can be skipped because it is much more thick.
Your blood vessels are set up as follows:
The Lumen: the void at the center Smooth muscle is a type of muscle that may contract and relax to regulate the blood vessel's diameter. Elastic tissue contracts to reduce pressure spikes and stop blood vessels from bursting. strong outer layer to prevent bursting
The overall diameter of veins and arteries is the same, but since veins have a broader lumen, blood flows through them at a lower pressure. Because the tissue stated above has less thick veins, the Lumen is broader.
Because arteries must contract and relax to regulate the flow of blood into tissues, they feature a dense coating of smooth muscle. When a muscle is relaxed, more blood enters the tissues (this occurs when you exercise because your cells want more oxygen). Due to the restricted lumen, arteries also contain greater elastic tissue to handle increased pressure.
Veins on the other hand, don’t control blood flow into tissue and carry low pressure blood so have thin smooth muscle and elastic tissue. Veins also have valves to prevent blood flowing backwards due to the low pressure.
