Zicam Â® Cold Remedy Nasal Spray is a cold shortening nasal spray that also provides multi-symptom relief. The active ingredients in this formula consist of a unique mix of plant-based homeopathic ingredients, delivered in our patented gel form. Zicam Â® Cold Remedy Nasal Spray does not contain zinc. Zicam Â® Cold Remedy Nasal Spray is the only nasal spray available to shorten colds and reduce symptom severity when taken at the onset of a cold.
What the Heart and Circulatory System Do. The circulatory system works closely with other systems in our bodies. It supplies oxygen and nutrients to our bodies by working with the respiratory system. At the same time, the circulatory system helps carry waste and carbon dioxide out of the body. Hormones â produced by the endocrine system â are also transported through the blood in the circulatory system. As the body's chemical messengers, hormones transfer information and instructions from one set of cells to another.
A: Humans breathe approximately 432 liters of oxygen per day, and that oxygen helps the tissues in the human body function properly. The body needs approximately 352.8 liters of oxygen per day when the body is at rest. Humans need oxygen to provide nutrients to all of the cells in their bodies. If tissues and cells go without oxygen, then they begin to die quickly. For example, brain cells can only go without oxygen for three minutes before they begin to die. After three minutes of no oxygen, permanent brain damage begins to spread throughout the brain's tissues. The body also needs energy in order to function properly. The human body uses the compound ATP for chemical energy for all of its cells and tissues.