käsivartti

Käsivartti is a Finnish term that translates to "forearm" in English. The forearm is the part of the upper limb of the human body located between the elbow and the wrist. It consists of two long bones, the radius and the ulna, which are connected by a strong interosseous membrane.

The forearm houses numerous muscles responsible for a wide range of movements in the wrist, hand, and fingers. These muscles can be broadly categorized into flexors and extensors. The flexor muscles are primarily located on the palm-side of the forearm and are involved in bending the wrist and fingers, as well as pronation (turning the palm downwards). The extensor muscles are located on the back of the forearm and are responsible for straightening the wrist and fingers, as well as supination (turning the palm upwards).

In addition to muscles, the forearm contains important nerves and blood vessels that supply the hand and fingers. The median, ulnar, and radial nerves all run through the forearm, controlling sensation and muscle function. The radial artery and ulnar artery are the main blood vessels providing oxygenated blood to the region. Injuries to the forearm can affect all these structures, leading to pain, weakness, or loss of function. Understanding the anatomy and function of the forearm is crucial in fields such as medicine, sports, and rehabilitation.