BIOD 121: Nutrition Model 1

What are the five dimensions of health - answer-physical health intellectual health emotional health social health spiritual health Food - answer-provides energy in terms of calories Nutrients - answer-1) promote growth and development 2) maintain tissue, cells, and bones 3) fuel the body for physical and metabolic work 4) regulate body processes Hunger - answer-internal drive often experiences as a negative sensation such as churning, growling, or stomach pain appetite - answer-external drive often related to pleasant sensations associated with food and can lead us to eat even if we aren't hungry Gastrointestinal (GI) tract - answer-The main sites in the body used for digestion and absorption of nutrients. It consists of the mouth, esophagus, stomach, small intestine, large intestine, rectum, and anus. Also called the digestive tract. Hormones - answer-compounds secreted into the bloodstream by one type of cell that acts to control the function of another type of cell. Hormones that Increase hunger - answer-Ghrelin Endorphins Neuropeptide-Y Hormones that Decrease hunger (cause satiety) - answer-Leptin Serotonin Cholecystokinin (CKK) Leptin - answer-Alerts the brain to turn off the hunger center and activates the satiety center when consuming a meal. Leptin production occurs in adipose (fat) cells Ghrelin - answer-produced by the stomach and has an opposing role: traveling to the brain, it stimulates the hunger center as it deactivates the satiety center Extern