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人体心脏的结构与功能,以及血液是如何在心脏的工作中沿血管循环流动的,是教师的教和学生的学必须要解决和突破的重点和难点。第一,教师要帮助学生找到自己心脏的位置。人体心脏位于胸腔的中央偏左下方,近似倒置,前后略扁的圆锥体,大小似本人的拳头。第二,教师要组织、帮助、辅导学生观察心脏的解剖图,解剖猪或羊的心脏,以此来了解人的心脏结构。教与学的活动过程中,通过对心脏解剖以及对人体心脏解剖图的观察来认识心脏的结构。
The structure and function of the human heart, and how the blood flows along the circulation of blood in the work of the heart, are the key and difficult points that teachers’ teaching and student learning must solve and break through. First, teachers want to help students find where their heart is. The human heart is located in the central left side of the chest cavity, approximately inverted, slightly flat cone before and after, the size of his fist. Second, teachers should organize, help, counseling students to observe the anatomy of the heart, anatomy pigs or sheep’s heart, in order to understand the human heart structure. Teaching and learning activities through the heart anatomy and anatomy of the human heart to see the anatomy of the heart to understand the structure.