天气预报 > 其他 > 人体有多少条肌肉
人体有多少条肌肉
更新时间: 2020-11-05 00:00:00  

人体肌肉约有639块,按结构和功能的不同又可分为平滑肌、心肌和骨骼肌三种,按形态又可分为长肌、短肌、阔肌和轮匝肌。平滑肌主要构成内脏和血管,具有收缩缓慢、持久、不易疲劳等特点,心肌构成心壁,两者都不随人的意志收缩,故称不随意肌。骨骼肌分布于头、颈、躯干和四肢,通常附着于骨,骨骼肌收缩迅速、有力、容易疲劳,可随人的意志舒缩,故称随意肌。

关键词: 人体 多少 肌肉

人体有多少条肌肉相关经验

天气预报

最新推荐

页面:/news/view-1280594/ | 耗时:0.5506 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=1280594 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1280594 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1280594 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1062626,1098705,1125217,1126038,1111524,1579593,121694,1064119,1100905,1077730,1066616,1109973,943189,1098973,1073493,1077956,1066909,1080897,1133187,1090705,2640268,1129335,1053874,1081095,117712,1072103,2614527,1064761,1114430,1112776) ORDER BY field (ArticleID,1062626,1098705,1125217,1126038,1111524,1579593,121694,1064119,1100905,1077730,1066616,1109973,943189,1098973,1073493,1077956,1066909,1080897,1133187,1090705,2640268,1129335,1053874,1081095,117712,1072103,2614527,1064761,1114430,1112776)