利用哈维经典实验,可取得较好教学效果。生理实验的鼻祖哈维曾做过一个实验:用布条把上臂缠紧,可发现臂前静脉上出现鼓包。这鼓包是静脉瓣积存血液造成的。用手指沿着不同方向压迫,鼓包会随着发生变化。在讲述动脉,静脉的概念时,可将哈维的实验加以补充,并让学生亲自动手。1.让学生伸出左手前臂,可发现一条条“青筋”,这就是静脉,这说明“皮下静脉分 Using Harvey classic experiments, good teaching results can be achieved. Dr. Harvey, the father of physiology experiments, once did an experiment: Wrap the upper arm tightly with a piece of cloth and find that there is a bulge on the anterior vein of the arm. This bulge is caused by the accumulation of blood in the venous valve. Press with your fingers in different directions, and the bulge will change with it. When describing the concepts of arteries and veins, Harvey’s experiments can be supplemented and students can get their hands on their hands. 1. Let the student stretch out his left hand forearm and find a strip of “blue veins”. This is the vein, which means “subcutaneous veins