The human brain is a complex organ that allows us to think, move, feel, see, hear, taste, and smell. It controls our body, receives information, analyzes information, and stores information. The brain produces electrical signals, which, together with chemical reactions, let the parts of the body communicate. The nerves send these signals throughout the body.
Headaches are one of the most common medical complaints nearly everyone gets a headache at some point. Over 45 million Americans, about one in six, suffer chronic headaches each year. Headaches therefore have a big economic impact when you have a throbbing pain in your head, it’s hard to work or function at all. A headache is a pain sensed in the nerves and muscles of the synapse xt head and neck, as well as the membranous coverings of the brain and spinal cord. Your brain itself cannot sense pain, so a headache has nothing to do with your brain hurting. It’s really a pain somewhere around your brain, being picked up by nerve endings located in your head.
Depression is a mental health disorder that can affect the way you eat and sleep, the way you feel about yourself, and the way you think about things. A depressive disorder involves the body, mood, and thoughts. Sometimes people get badly depressed after an intense incident, like a divorce in the family, someone you love dying, a stressful home life, violence, or breaking up with a boyfriend or girlfriend. Other times depression just happens by itself. People who have low self-esteem, who are consistently negative, or who is overwhelmed by stress, are also susceptible to depression.
Your heart pumps blood through the body’s arteries. The large arteries that leave your heart narrow into smaller arteries called arterioles. The arterioles then narrow into smaller vessels called capillaries, which supply oxygen and nutrients to all the organs of your body. The blood then returns to your heart through the veins. Your heart, brain and kidneys can handle increased pressure for a long time. But it doesn’t mean it’s not hurting you. High blood pressure is a major risk factor for stroke, heart attack, heart failure and kidney failure.
Food and oxygen are carried to the brain by many blood vessels. These vessels are found on the surface of the brain and deep within the brain. The blood vessels and nerves enter the brain through holes in the skull. Because brain cells will die if the supply of blood which carries oxygen is stopped, the brain has top priority for the blood. Even if other organs need blood, the body attempts to supply the brain with a constant flow of blood.