yläraajoissa

yläraajoissa is a Finnish term that translates to "in the upper limbs" in English. It refers to the anatomical region of the body that comprises the shoulders, arms, elbows, forearms, wrists, and hands. This complex structure is responsible for a wide range of movements and functions, including locomotion, manipulation of objects, and sensory perception.

The upper limbs are characterized by a robust skeletal framework, primarily consisting of the humerus in the upper arm, the radius and ulna in the forearm, and the carpals, metacarpals, and phalanges in the wrist and hand. This bony structure is supported and moved by a complex network of muscles, tendons, and ligaments. The shoulder girdle, formed by the clavicle and scapula, provides a crucial connection to the axial skeleton, enabling extensive mobility.

The intricate arrangement of muscles in the upper limbs allows for both gross motor skills, such as lifting and throwing, and fine motor skills, essential for tasks like writing and intricate manipulation. Nerves originating from the brachial plexus innervate the upper limbs, controlling both voluntary muscle movements and conveying sensory information from the skin and deeper tissues to the brain. Blood supply is provided by the subclavian artery and its branches. The upper limbs are vital for human interaction with the environment, playing a fundamental role in daily activities and overall quality of life.