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您请求的操作仅限于组中的用户:描述==[[图片:braplexs . png |拇指|右|300px]]尺神经起源于C8-T1神经根,它形成了[[臂丛]]的内侧束。尺骨神经沿着手向下延伸穿过肘部肱骨内侧上髁的后面。尺神经在腋窝和上臂都没有分支。它开始在前臂上部和手部形成肌肉和皮肤分支。当尺神经穿过内侧上髁后,它进入前臂在尺侧腕屈肌的两个头之间。当尺神经经过内侧上髁后时,它可能受到压迫或刺激。尺神经穿过内侧上髁下的肘管。尺侧腕屈肌的分支分布在尺侧腕屈肌和趾深屈肌的内侧半部分[[File: nerves_of_the_left_upperextrem_nerves_of_the_left_upperextrem_gif |right]]尺神经沿前臂尺骨进入手腕。当神经进入前臂时,它停留在趾深屈肌的内侧和尺腕屈肌的下方,为这些肌肉提供分支。在前臂下部,尺神经位于尺侧腕屈肌外侧和尺动脉内侧。 The ulnar nerve enters the palm of the hand through the Guyon canal. The nerve and artery pass superficial to the flexor retinaculum. At the wrist, the ulnar nerve lies just lateral to the [[pisiform]] bone. The superficial branch of the ulnar nerve supplies and passes under the Palmaris brevis muscles and divides into palmar digital nerves. The deep branch of the ulnar nerve innervates the three hypothenar muscles, the two medial lumbricals, the seven interrosei, the adductor pollicis and the deep head of the flexor pollicis brevis. It supplies all intrinsic hand muscles which lie medial to the flexor pollicis except the last lateral two lumbricals. === Root === C8, T1 From the Medial cord of brachial plexus. === Branches === * Muscular branch * Palmar cutaneous branch * Dorsal cutaneous branch

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