解剖学课件臂前区手掌.pptVIP

臂前区、前臂前区、手掌Anterior compartment of the arm, of the forearm and palm 一、肌肉muscles * （一）臂前群肌The muscles of the anterior compartment of the arm （二）前臂前群肌The muscles of the anterior compartment of the forearm （三）手掌肌The muscles of the palm 神经支配：肌皮N 作用：主要屈肘关节 （一）臂前群肌The muscles of the anterior compartment of the arm ①肱二头肌 biceps brachii ②喙肱肌coracobrachialis ③肱肌brachialis 肱二头肌长头Long head of the biceps brachii 肱二头肌短头Short head of the biceps brachii 肱肌brachialis 喙肱肌coracobrachialis 1.浅层 共5块，自桡侧向尺侧依次为： ①肱桡肌brachioradialis ②旋前圆肌pronator teres ③桡侧腕屈肌flexor carpi radialis ④掌长肌palmaris longus ⑤尺侧腕屈肌flexor carpi ulnaris 正 中 N 尺N （二）前臂前群肌The muscles of the anterior group of the forearm 肱桡肌 brachioradialis 旋前圆肌 pronator teres 桡侧腕屈肌 flexor carpi radialis 掌长肌 palmaris longus 尺侧腕屈肌 flexor carpi ulnaris 桡N 共9块，排为3层 ： 指浅屈肌flexor digitorum superficialis 正中神经 2.中层middle layer: 只1块 指浅屈肌flexor digitorum superficialis ①拇长屈肌flexor pollicis longus 正中N ②指深屈肌flexor digitorium profundus 桡侧半 正中N 尺侧半 尺N ③旋前方肌Pronator quadratus 正中N 3.深层deep layer 有3块 旋前方肌Pronator quadratus 指深屈肌flexor digitorium profundus 拇长屈肌flexor pollicis longus （三）手肌The muscles of the palm 1.外侧群lateral group： ①拇短展肌abductor pollicis brevis ②拇短屈肌flexor pollicis brevis ③拇对掌肌opponens pollicis ④拇收肌adductor pollicis 除拇收肌由尺神经支配外，其余的肌肉由正中神经支配。 拇短展肌abductor pollicis brevis 拇短屈肌flexor pollicis brevis 拇对掌肌opponens pollicis 拇收肌adductor pollicis 2 .内侧群medial group： 神经支配：均由尺神经支配 ①小指展肌abductor digiti minimi ②小指短屈肌flexor digiti minimi brevis ③小指对掌肌opponens digiti minimi 小指展肌abductor digiti minimi 小指短屈肌flexor digiti minimi brevis 小指对掌肌opponens digiti minimi 神经支配：除第1、2蚓状肌由正中神经支配外，其余肌肉由尺神经支配。 3.中间群middle group： ①蚓状肌lumbricales(4块) ②骨间掌侧肌palmar interossei(3块) ③骨间背侧肌dorsal interossei(4块) 蚓状肌lumbricales 骨间背侧肌dorsal interossei 骨间掌侧肌palmar interossei 二、神经nerves 1.肌皮神经 musculocutaneous nerve 2.尺神经 ulner nerve 3.正中神经 median nerve 4.桡神经 radial nerve 肌皮神经musculocutaneous nerve 臂部的尺神经 前臂的尺神经 ulnar nerve ulnar