Extremities
(Redirected from Acral)
Extremities are the outermost parts of the body, including the hands, feet, arms, and legs. They play a crucial role in mobility and manipulation, allowing humans to interact with their environment.
Anatomy of Extremities[edit | edit source]
The human body has four extremities: two upper and two lower. The upper extremities consist of the shoulder, arm, forearm, wrist, and hand. The lower extremities include the hip, thigh, leg, ankle, and foot.
Upper Extremities[edit | edit source]
The upper extremities start from the shoulder and end at the hand. The shoulder joint is the most mobile joint in the body, allowing the arm to move in multiple directions. The arm consists of the humerus, the largest bone in the upper body. The forearm contains two bones, the radius and ulna, and leads to the wrist. The hand consists of 27 bones, including the carpals, metacarpals, and phalanges.
Lower Extremities[edit | edit source]
The lower extremities begin at the hip and end at the foot. The hip is a ball-and-socket joint that connects the pelvis to the femur, the longest bone in the body. The leg contains two bones, the tibia and fibula, and leads to the ankle. The foot consists of 26 bones, including the tarsals, metatarsals, and phalanges.
Functions of Extremities[edit | edit source]
Extremities are essential for various functions, including mobility, balance, and manipulation. They allow humans to walk, run, jump, lift, carry, and perform fine motor tasks. They also play a role in body language and non-verbal communication.
Health and Extremities[edit | edit source]
Various health conditions can affect the extremities, including arthritis, fractures, sprains, and neuropathy. These conditions can cause pain, swelling, stiffness, numbness, and reduced mobility. Treatment options include medication, physical therapy, surgery, and lifestyle changes.
See Also[edit | edit source]
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