Veins and arteries have valves throughout the body

In states experiencing the national move away from manufacturing and into service industries, families can experience poor nutrition through the intervening step of ____

A) pollution B) high smoking rates C) increased poverty D) lack of food safety

Answer the following statement(s) true (T) or false (F)

1. Melatonin is released by the pineal body and helps to regulate circadian rhythms. 2. The heart secretes the hormone atrial natriuretic peptide, which regulates the blood pressure. 3. The thymus gland releases thymosin, which promotes the production of T cells. 4. The kidneys secrete erythropoietin, which helps regulate your biological clock. 5. The kidneys secrete erythropoietin, which stimulates blood cell production.