Before modern medicine, in which treatment's with certain ethical therapies and medication, most patients with mental illness where placed in institutions no matter how severe, and were forced to go through unethical therapies such as electroshock or lobotomies.
The second statement best explains the type of blood vessel and the function of these vessels' valves - <span>These are veins, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart.
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Veins are large blood vessels which carry blood back to the heart. <span>Veins have a system of valves to prevent back-flow.</span>
There are two types of drugs: Legal drugs are known as over-the-counter (OTC) and prescription (Rx) drugs. Alcohol, nicotine, and caffeine are all legal drugs as well.
Could you give us the answer choices? It says 'which'... That should mean there are multiple answer choices.
