True, you're supposed to consider your needs before consuming something.
The Sa node sends out an electrical impulse. The upper heart chambers (atria) contract.
Answer: Dr. Colbert has suggested to Mariam that she consider increasing her daily intake of foods containing antioxidant vitamins to lower her risk of developing certain age-related diseases. Dr. Colbert's recommendation suggests that she believes <u>aging is due to damage from free radicals.</u>
Explanation:
Free radicals can cause damage to parts of cells such as proteins, DNA, and cell membranes by stealing their electrons through a process called oxidation. (This is why free radical damage is also called “oxidative damage.”).
