1 Some foods and treats can help to control plaque and tartar, which could help save hundreds, or even thousands of dollars, if they are part of an overall plan that prevents periodontal disease. 2  Dental diets cost about $30 for a 30-pound bag, or about $250 per year to feed a moderately active medium-sized dog.
The human brain is a complex organ controlling every voluntary and involuntary action we make. The brain controls basic motor skills, heart and breathing rates, emotions, behavior and decision-making. There is a part of the brain responsible for addiction. The name for this part of the brain is the limbic system. This system, also known as the âbrain reward system,â is responsible for producing feelings of pleasure. When a person takes an addictive substance, the limbic system releases chemicals that make the user feel good. This encourages habitual substance abuse.
Figure 1: Areas of the brain affected by depression. Amygdala: The amygdala is part of the limbic system, a group of structures deep in the brain that's associated with emotions such as anger, pleasure, sorrow, fear, and sexual arousal.The amygdala is activated when a person recalls emotionally charged memories, such as a frightening situation.se of this technology has led to a better understanding of which brain regions regulate mood and how other functions, such as memory, may be affected by depression. Areas that play a significant role in depression are the amygdala, the thalamus, and the hippocampus (see Figure 1).