16)Antibodies, also known asimmunoglobulins, are Y-shaped proteins that are produced by the immune system to help stop intruders from harming the body. When an intruder enters the body, the immune system springs into action. These invaders, which are calledantigens, can be viruses, bacteria, or other chemicals.
18)Eating a diet that is rich in whole grains, fruits, vegetables and low-fat dairy products and skimps on saturated fat and cholesterol can lower your blood pressure by up to 11 mm Hg if you have high blood pressure. This eating plan is known as the Dietary Approaches to Stop Hypertension (DASH) diet.
21)Blood flow is the movement of bloodthrough a vessel, tissue, or organ... In the arterial system, as resistance increases, blood pressure increases andflow decreases. In the venous system, constriction increases blood pressure as it does in arteries; the increasingpressure helps to return blood to the heart.
22)Aging changes in the heart and blood vessels. Some changes in the heart andblood vessels normally occur with age. However, many other changes that are common with aging are due to modifiable factors.... Then, the vessels begin to collect together into larger and larger veins, which return blood to the heart.