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臂丛
学习目标
完成本学习单元后，你将学会：
- 认识臂丛的两个主要部分。
- 熟悉臂丛的解剖结构（根、干、分支、神经束）。
- 列举臂丛的外侧支和终末支，以及它们支配的区域。
浏览图谱
臂丛是起源于颈区的神经丛，它穿行于前斜角肌与中斜角肌之间，进入腋窝后发出许多周围神经并走行于上肢，负责支配相应的肌肉、关节和皮肤。臂丛主要分为两大部分：锁骨上分支位于颈后三角区，包含神经根、神经干及其分支；锁骨下分支则分布在腋区，由神经束及其分支组成。臂丛不仅发出前后侧支，还包含五条主要终末支。
:watermark(/images/watermark_5000_10percent.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/overview_image/2896/A2vatvixP3zZU1kSTrlcA_brachial-plexus-overview_cn.jpg){kind=logo}
:watermark(/images/watermark_5000_10percent.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/overview_image/181/1aaixIhKoaqkKpsVAeXEMw_brachial-plexus-branches_cn.jpg){kind=logo}
你可以仔细观察图谱中臂丛的组成部分：
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/plexus-brachialis-3/xRmvDWlAjDQcOaxVBhGrzw_Brachial_plexus.png "臂丛 (Brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-spinalis-c5/FMLNqo2KEiVM9JeqijzlRQ_Spinal_nerve_C5.png "第5颈神经 (Spinal nerve C5)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-spinalis-c6/jNqRRnDY9yy6xzMKd2j5A_Spinal_nerve_C6.png "第6颈神经 (Spinal nerve C6)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-spinalis-c7/CfglDa6qeg5bf8YMZRww_Spinal_nerve_C7.png "第7颈神经 (Spinal nerve C7)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-spinalis-c8/QQenTCC0CTDTLaVyL9Zx4w_Spinal_nerve_C8.png "第8颈神经 (Spinal nerve C8)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-spinalis-th1/yyxkhLYgYrAZlZ9qmgW05Q_Spinal_nerve_T1.png "第1胸神经 (Spinal nerve T1)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-spinalis-th2/zncpQWo30XTqu7W8QSNsgA_Spinal_nerve_T2.png "第2胸神经 (Spinal nerve T2)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/posterior-rami-of-spinal-nerves-c5t2/5OgVhzJ4CosJ24J9O94VA_Posterior_rami_of_spinal_nerves_C5-T2.png "第5颈神经~第2胸神经后支 (Posterior rami of spinal nerves C5-T2)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/roots-of-brachial-plexus/ONBXFyshx8ah3YqyaCf3w_Roots_of_brachial_plexus.png "臂丛神经根 (Roots of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/truncus-superior-plexus-brachialis/zaJd8WuVww90g9lzWJSg_Superior_trunk.png "臂丛上干 (Superior trunk of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/anterior-division-of-superior-trunk-of-brachial-plexus/9ezhvfaBSgm8aHyrpeVjFw_Anterior_division_of_superior_trunk.png "臂丛上干前股 (Anterior division of superior trunk of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/posterior-division-of-superior-trunk-of-brachial-plexus/OBMVDK4fxXQlQ4MZ0LFVw_Posterior_division_of_superior_trunk.png "臂丛上干后股 (Posterior division of superior trunk of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/truncus-medius-plexus-brachialis/QNBGqMbg96OPXw96Qs47rg_Middle_trunk_of_brachial_plexus.png "臂丛中干 (Middle trunk of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/anterior-division-of-middle-trunk-of-brachial-plexus/MX1UZNUHolPk63WXGpFAuw_Anterior_division_of_middle_trunk.png "臂丛中干前股 (Anterior division of middle trunk of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/posterior-division-of-middle-trnk-of-brachial-plexus/of0cPt3lofqLjflF2veDA_Posterior_division_of_middle_trunk.png "臂丛中干后股 (Posterior division of middle trunk of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/truncus-inferior-plexus-brachialis/JjJCA2qGHNjMDA6XeHXwA_Inferior_trunk.png "臂丛下干 (Inferior trunk of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/anterior-division-of-inferior-trunk-of-brachial-plexus/q0r4lDwo6trXrDOLvby5gw_Anterior_division_of_inferior_trunk.png "臂丛下干前股 (Anterior division of inferior trunk of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/posterior-division-of-inferior-trunk-of-brachial-plexus/ulaoqFjhwB1yKeMqkwxruA_Posterior_division_of_inferior_trunk.png "臂丛下干后股 (Posterior division of inferior trunk of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/muscular-branches-of-brachial-plexus-longus-colli-and-scalene-muscles/AGDmfrZJqK4g1y4w4Ctfg_Branches_to_longus_coli_and_scalene_muscles.png "臂丛肌支（颈长肌和斜角肌） (Muscular branches of brachial plexus (longus colli and scalene muscles))；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-dorsalis-scapulae/jPNBhR6hjsvQcG7SVndkEw_Dorsal_scapular_nerve.png "肩胛背神经 (Dorsal scapular nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/long-thoracic-nerve-2/a08IezuxkKVlaHNHG0vqPw_Long_thoracic_nerve.png "胸长神经 (Long thoracic nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-suprascapularis-2/M8aVr2nDjNG9Vorr5Wrd5g_Suprascapular_nerve.png "肩胛上神经 (Suprascapular nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-subclavius/e2TfTInzgycqtQSxe8tgTg_Subclavian_nerve.png "锁骨下神经 (Subclavian nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/fasciculus-lateralis-2/131voQNHCuoMJKG4JfvS3w_Lateral_cord.png "臂丛外侧束 (Lateral cord of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/fasciculus-posterior-2/pfrxvkVUT27aLTlQ7Oz4Q_Posterior_cord_of_brachial_plexus.png "臂丛后束 (Posterior cord of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/fasciculus-medialis-2/wsGgjURKbjt2TenbI7IXA_Medial_cord_of_brachial_plexus.png "臂丛内侧束 (Medial cord of brachial plexus)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/lateral-pectoral-nerve-1/RacN6SEvvoOt9w3Kq9J1mw_Lateral_pectoral_nerve.png "胸外侧神经 (Lateral pectoral nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-musculocutaneus-2/LA0qPwX5NfGjKhMxlhmWhA_Musculocutanenous_nerve.png "肌皮神经 (Musculocutaneous nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-subscapularis-2/5ILQQf0NSGrlSDhQKlrpTw_Upper_subscapular_nerve.png "肩胛下神经上支 (Superior subscapular nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-thoracodorsalis-2/44KjXa41bPT7n0lUjxEplg_Thoracodorsal_nerve.png "胸背神经 (Thoracodorsal nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/inferior-subscapular-nerve/ObOMwvOd2ed17OH0FQmXqQ_Lower_subscapular_nerve.png "肩胛下神经下支 (Inferior subscapular nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-radialis-2/sPL0hLNLzJUULhthVeq5g_Radial_nerve.png "桡神经 (Radial nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-axillaris-2/2E3uXD4wZGQw3Uwn70Tw_Axillary_nerve.png "腋神经 (Axillary nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/medial-pectoral-nerve-1/f286KIhOk2ZKnYloUpG3Q_Medial_pectoral_nerve.png "胸内侧神经 (Medial pectoral nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/ansa-pectoralis/W7yQuYePv11xYT2yfK7zw_Ansa_pectoralis.png "胸袢 (Ansa pectoralis)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-cutaneus-brachii-medialis/ETA9ULFVYNbHPo10Yiepcg_Medial_brachial_cutaneous_nerve.png "臂内侧皮神经 (Medial brachial cutaneous nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-cutaneus-antebrachii-medialis-2/JpEVjURMJi6EpUtiVFIIwQ_Medial_cutaneous_nerve_of_the_forearm.png "前臂内侧皮神经 (Medial antebrachial cutaneous nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-ulnaris-2/f02CHPegJhR3Lpyh0Stm9A_Ulnar_nerve.png "尺神经 (Ulnar nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/nervus-medianus-2/Rv51lM6ph3Th2Hclt6cTw_Median_nerve.png "正中神经 (Median nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/1st-intercostal-nerve/mPo6RQMG5ywvFvhg73P25A_First_intercostal_nerve.png "第1肋间神经 (1st intercostal nerve)；图像：Begoña Rodriguez"){kind=logo}
:watermark(/images/watermark_only.png,0,0,0):watermark(/images/logo_url.png,-10,-10,0):format(jpeg)/images/learnable/2nd-intercostal-nerve/fONzbM7MuxpwlrH2Ruzlqg_Second_intercostal_nerve.png "第2肋间神经 (2nd intercostal nerve)；图像：Begoña Rodriguez"){kind=logo}
臂丛
Brachial plexus
1/41
同义词：
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进行测验
现在你已经学习了臂丛相关的图谱，通过测验来巩固知识吧。
小结
神经根 |
第5~8颈神经和第1胸神经前支 |
结构组成 |
神经干：上干、中干和下干 股：三个前股和三个后股 神经束：后束、外侧束和内侧束 |
锁骨上终末前分支 |
肩胛后神经、肩胛上神经、胸长神经和锁骨下神经 |
锁骨下终末前分支 |
胸外侧神经、胸内侧神经、臂内侧皮神经、前臂内侧皮神经、肩胛下神经上/下支和胸背神经 |
终末支 |
肌皮神经、腋神经、正中神经、桡神经和尺神经 |
功能 |
支配上肢所有的感觉和运动功能 |
继续学习
相关教材
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