Education. Theheart.org: trusted cardiology news and opinions. Anatomy of the Human Heart - Texas Heart Institute Heart Information Center. Click here for non-Flash version of this illustration of anatomy of the heart. Your heart is located between your lungs in the middle of your chest, behind and slightly to the left of your breastbone (sternum). A double-layered membrane called the pericardium surrounds your heart like a sac. The outer layer of the pericardium surrounds the roots of your heart's major blood vessels and is attached by ligaments to your spinal column, diaphragm, and other parts of your body. The inner layer of the pericardium is attached to the heart muscle. A coating of fluid separates the two layers of membrane, letting the heart move as it beats, yet still be attached to your body. Your heart has 4 chambers. The Heart Valves (illustration) Four types of valves regulate blood flow through your heart: The tricuspid valve regulates blood flow between the right atrium and right ventricle.
See also on this site: The Heartbeat The Conduction System (illustration) The Circulatory System (illustration) Science & Nature - Human Body and Mind - Anatomy - Organs anatomy. Medical Matrix - Anatomy. Human Anatomy Model, Anatomy Chart, Anatomical Chart | InnerBody. 3D Human Anatomy. Human anatomy. "Physiologies" redirects here. For other uses, see Physiology. The study of the human body involves anatomy and physiology. The human body can show anatomical non-pathological anomalies known as variations which need to be able to be recognised.
Physiology focuses on the systems and their organs of the human body and their functions. Structure[edit] The human body has several body cavities the largest of which is the abdominopelvic cavity. Composition[edit] The main elements that compose the human body are shown from most abundant to least abundant. The average adult body contains between 5 and 5½ litres of blood and approximately 10 litres of interstitial fluid. The composition of the human body can be referred to in terms of its water content, elements content, tissue types or material types. The vast majority of cells in the human body are not human at all; rather they are of bacteria, archaea, and methanogens such as Methanobrevibacter smithii. Human anatomy[edit] Human physiology[edit]
Human Body Systems. Medical Image Search Engine - OmniMedicalSearch.com - 150k Medical Images Indexed. Muscular System Anatomy, Diagram & Function. Without muscle, humans could not live. The primary job of muscle is to move the bones of the skeleton, but muscles also enable the heart to beat and constitute the walls of other important hollow organs. There are three types of muscle tissue: Skeletal muscle: This type of muscle creates movement in the body. There are more than 600 skeletal muscles, and they makes up about 40 percent of a person’s body weight.
Muscle movement happens when neurological signals produce electrical changes in muscle cells. Muscle pain is a common issue that can signal numerous problems, even if it’s something as simple as overuse. Muscle pain Sprains and strains Bruising Cramping Myopathy Muscular dystrophy Parkinson’s disease Fibromyalgia Multiple sclerosis Proper nutrition and exercise is important to keeping all muscles healthy, whether they are cardiac, smooth, or skeletal.
Human Body Maps | 3D Models of the Human Anatomy.