NUTR 1010 Lecture 5: Jan 18 Lecture

• School: University of Guelph
• Department: Nutrition
• Course: NUTR 1010
• Professor: Angela Wallace

Document Summary

Limiting the absorption of harmful substances such as toxins, and disease-causing organisms. The barrier function can detect antigens (foreign substances that when introduced to your body stimulates an immune response) The first immune cells that respond are called phagocytes. They target any invader, engulf it and destroy it by breaking it up. These broken up antigens are then detected by lymphocytes, which react by producing and secreting protein molecules called antibodies. Antibodies: destroy or inactivate foreign substances in the body. Nutrients are then processed and/or utilized for energy. The circulatory system transports nutrients throughout the body and into cells. Carriers blood and water soluble nutrients from the digestive tract to the liver. The liver then processes and releases these nutrients: can break down nutrients further, can store nutrients for later use, transport to the rest of the body for immediate use. Absorbs fat soluble nutrients that are unable to fit in small capillaries(in the liver)