what is upper limb and lower limb
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Both the limbs in the human have three segments in upper limb ie-arm (upper), forearm (middle) and. hand (distal) as that in the lower limb ie thigh (upper), leg (middle), and foot (distal). The upper and lower limbs. are fixed to the trunk by the pectoral and pelvic girdles respectively.
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In the humans, the gross difference in the upper and lower limbs is that the flexor and extensor surfaces and their functional groups of muscles are in the opposite directions i.e. flexor surfaces or muscles in the upper limbs are placed anteriorly whilst in the lower limbs.
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