The stapes bone is also known as the "stirrup bone" because it is shaped like a stirrup. It is found in the middle ear where it transmits sound vibrations from the Incas (anvil), which is the second smallest bone in the human body, to the inner ear. The malleus is sometimes compared to a hammer, because it strikes the anvil-shaped incus. Let’s look at four of the smallest parts of the human body: the smallest muscle, the smallest bone, the smallest organ, and the smallest blood vessel. The stapes is the third bone of the three ossicles in the middle ear.The stapes is a stirrup-shaped bone, and the smallest in the human body.It rests on the oval window, to which it is connected by an annular ligament.The stapes is described as having a base, resting on the oval window, as well as a head that articulates with the incus. Shaped like a “U,” this innermost bone receives sound vibrations and transfers them along to the cochlea for the brain to interpret it. The longest bone in the human body: Femur. The smallest bone in the human body is the stape, and it is located in the middle ear. The largest bone in the human body is: a. Skull. The name of the smallest bone is the stapes, also known as the stirrup. The femur is the longest bone found in the human body. It is the smallest bone in the human body. The smallest is the stapes, also called the stirrup. Bones at a Glance. The stapes is the smallest bone in the human body. The anvil, also known as the incus is the second smallest bone in the human body. It is only about 2.5-3.5 mm (a 10th of an inch) big. Fact 4: Stirrup is the Smallest Bone in the Human Body The stirrup bone is the smallest bone in the human body and one of the 3 bones that make up the middle ear, measuring only 2-3 millimeters. Not going through the whole bone structure in itself, let us take a look at the longest and shortest bone in the human body. The human body is a marvel of engineering, with thousands of interrelated parts. The human skeleton of an adult consists of around 206 to 210 bones, depending on the counting of sternum (which may alternatively be included as the manubrium, body of sternum, and the xiphoid process). It is almost 19.9 inches long and is commonly known as the thigh bone. The stapes is one of three small bones in the middle ear that allow mammals to transmit sound waves through their eardrum and hear. Scapula (2) Clavicle (2) Total number of bones=4. What is the smallest bone in the human body? b. Fastest Human Powered Vehicle Smallest Bone In The Human Body smallest bone The stapes or stirrup is the stirrup-shaped small bone or ossicle in the middle ear which is attached to the incus laterally and to the fenestra ovalis, the "oval window", medially. 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