Nutrient exchange is a continuous cycle, constantly supplying the body with oxygen and nutrients while removing carbon dioxide and metabolic waste.
Red blood cells are the cells in the blood that carry oxygen from the lungs to the body tissues through blood pumped by the heart. As they travel away from the heart, they traverse smaller and smaller arteries, finally arriving at the collections of microscopic blood vessels called capillaries.
Capillaries contain a high concentration of oxygen and nutrients, while the surrounding tissues contain a lower concentration. Through a process called diffusion, these particles leave the capillaries and enter the body's tissues.
Conversely, the body's tissues contain high concentrations of carbon dioxide and metabolic waste, while the capillaries contain a lower concentration. Waste products diffuse from the tissues into the capillaries and from there are carried by the venous system back toward the heart.
The waste products are eventually eliminated from the bloodstream by the liver, kidneys, and lungs.
Reviewed ByReview Date: 10/10/2008
Larry A. Weinrauch, MD, Assistant Professor of Medicine, Harvard Medical School, and Private practice specializing in Cardiovascular Disease, Watertown, MA. Review provided by VeriMed Healthcare Network.
capillaries
The capillaries are responsible for gas and nutrient exchange with each of the body's cells.
The placenta
Assuming this refers to blood vessels, the answer is the capillaries.
They exchange water, oxygen and carbon dioxide, as well as nutrient and waste chemical substances between blood and surrounding tissues.
placenta
The placenta connects a developing fetus to the wall of the uterus, which allows gas exchange, nutrient absorption, and waste elimination
One of them is to pass on essential nutrients from the mother to the baby. Nutrient supply. Waste elimination. (The third function is gas exchange.)
One of them is to pass on essential nutrients from the mother to the baby. Nutrient supply. Waste elimination. (The third function is gas exchange.)
Capillaries are the smallest blood vessels. They connect arteries and veins. They are the site of gas, waste, and nutrient exchange between the blood and the body tissues.
Nutrition guidelines *Food exchange list *Dietary standard & Nutrient Density *Nutrition Facts *Food composition table
Capillaries. Its one-celled thick structure help it to perform its work efficiently