Not only is the knee the largest joint in the human body, it is also the most complicated, according to Inner Body. The knee is a hinge joint that is formed to move only on one axis.
The causes of body joint pain consist of rheumatoid arthritis, gout, osteoarthritis, bursitis, strains, sprains and fibromyalgia, according to Healthline. Joint pain is the discomfort, aching and soreness felt in any part of the joints.
The American Association of Anatomists explains the "Terminologica Anatomica" lists more than 7,500 named, human body parts in Latin, as of November 2014. The list of human body parts includes dozens of organs, more than 200 bones, hundreds of muscles, nerves, blood vessels and microscopic structure
According to About.com, water makes up between 65 and 90 percent of all cells in the human body. The remaining elements by mass include oxygen, carbon, hydrogen, nitrogen, calcium, phosphorus, potassium, sulfur, chlorine, sodium, magnesium and trace amounts of iron, cobalt, copper, zinc, iodine, sel
According to the Library of Congress, the human body has at least 650 skeletal muscles and as many as 840 depending on what counts as a muscle. Some sources count complex muscles as a single muscle, while others count complex muscles' individual parts as separate muscles, which leads to dissent.
Anatomists enumerate about 22 organs in the human body. Mainstream science designates five vital organs, including the brain, heart, kidneys, liver and lungs. Some educators raise the count of vital organs to ten, adding the pancreas, reproductive organs, stomach, small intestine and large intestine
The largest and longest bone in the human body is the femur, and it is located in the upper leg. The femur connects to the knee at one end and fits into the hip socket at the other.
The heart is the muscular organ situated in between the lungs, behind the sternum and slightly tilted towards the left side of the breastbone. Rhythmic muscular contractions activate the heart to pump blood through a system of arteries and veins called the cardiovascular system.
Food is needed by the human body for energy, to repair and build cells and to prevent sickness and heal from it. While it is possible to obtain nutrients in a scientifically controlled manner, common food is the most efficient way of obtaining energy and nutrients.
The human body normally has two kidneys. These fist-sized organs are located in the back part of the abdomen, just below the rib cage, on either side of the spine. Their primary function is to filter the blood and remove waste from the body.