Explain the upper limbs shii of anatomy
Biology
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Answer
The upper limbs are the arms, from the shoulder to the fingertips. They are responsible for a wide range of movements, including reaching, grasping, and manipulating objects.
Key anatomical structures include:
- Bones: The humerus (upper arm), radius and ulna (forearm), and the carpals, metacarpals, and phalanges (hand and fingers).
- Joints: The shoulder joint (ball-and-socket), elbow joint (hinge), and wrist joint (condyloid).
- Muscles: Numerous muscles allow for flexion, extension, abduction, adduction, rotation, and supination/pronation of the limb.
- Nerves: Major nerves like the median, ulnar, and radial nerves control muscle function and sensation.
- Blood Vessels: Arteries and veins supply oxygenated blood and remove deoxygenated blood.
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