Capillaries are extremely small blood vessels responsible for the delivery of essential nutrients directly to tissues throughout the body. They also help the body circulate blood and remove waste from its organs.
Capillaries contain small holes in their structure that allow oxygen and other nutrients to pass through into organs and tissues. Specific types of capillaries are determined by their functions, which affects their number and placement in the body. Capillaries are the smallest types of blood vessels in the body and operate as a network of many blood vessels woven together. They are most numerous in areas of the body that require a higher amount of oxygen and nutrient exchange.Learn More
Systemic circulation refers to the path blood takes on its route around the body as it brings oxygen to the tissues, while pulmonary circulation is the smaller loop blood takes to the lungs. Each loop runs through a different half of the heart, according to class notes from East Tennessee State University.Full Answer >
The cardiovascular system's functions are to pump blood around the body, deliver nutrients and oxygen to tissues and take waste away from tissues, according to WebMD. It achieves this by working alongside other organs, including the lungs.Full Answer >
Peristalsis is a series of contractions that pushes solids or liquids through tubes in certain parts of the body, primarily the digestive system. Peristalsis is basically a wave of contractions, such as those used by the esophagus and small intestines to move food through the system.Full Answer >
Lymphocytes are a type of white blood cell that are responsible for initiating an immune response when a foreign invader enters the body. These cells are primarily in the tonsils, lymph nodes and the spleen, but they also circulate in the bloodFull Answer >