The autonomic nervous system is the part of the peripheral nervous system that controls visceral functions such as heart rate, respiratory rate and digestion. It consists of enteric, parasympathetic ...

The lymphatic system is a network of lymphoid organs and lymphatic vessels. It transports lymph fluid and helps to clear toxins and other waste from the body’s tissues. Lymphocytes use the lymphatic ...

Troy Segal is an editor and writer. She has 20+ years of experience covering personal finance, wealth management, and business news. Erika Rasure is globally-recognized as a leading consumer economics ...