The longest bone in the human body is the femur, which is also called the thigh bone. On average, it is about 20 inches long, according to Infoplease.Know More
The second largest bone is the shinbone, which is also called the tibia and is about 17 inches long on average. On the other hand, the smallest bones in the body are the malleus, incus and stapes. Together, these three bones are called the ossicles. Found in the middle ear, these bones are used by the body to transmit sound. The stapes, or the stirrup, is the smallest of the three, and on average, it is about 0.1 inches long.
Though babies are born with over 300 bones, by the time they reach adulthood, they only have 206. Bones connect over time as humans age to adulthood.Learn more in Human Anatomy
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, selenium and fluorine.Full Answer >
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.Full Answer >
The warmest parts of the human body are the head, chest and armpits, according to the Journal Gazette of Fort Wayne, Ind. Conversely, the coldest parts are the feet and toes, which are farthest from the warm-blood-pumping heart.Full Answer >
Course information from the University of Cincinnati states that the excretory system is important to the human body because without it, nitrogenous wastes would build up in blood and tissues to toxic levels. The kidneys play a major role, filtering the nitrogenous wastes from the blood and mixing them with water to make urine. The kidneys filter large volumes of blood every day for this purpose.Full Answer >