将你的手指放在拇指下的手腕处或颚下脖子的一侧,你感到有规律的卜卜跳动吗?那不是你的心跳,而是你的脉搏。你在那些地方有感觉是因为该处的动脉贴近皮肤的表层。动脉是从心脏输送血液的大血管。你的心脏每跳动一次,血液就会被打入动脉。当血液似波浪般通过时,动脉就呈现扩张和收缩。脉搏实际上就是动脉的扩张和收缩。凡在动脉贴近皮肤的地方,你都能感 Put your finger on the wrist under your thumb or on the side of your neck, do you feel regular bobbles? It’s not your heartbeat, it’s your pulse. You feel in those places because the arteries in the area are close to the skin. The artery is a large blood vessel that carries blood from the heart. Every time your heart beats, blood will be injected into the artery. When blood passes like waves, the arteries expand and contract. The pulse is actually the expansion and contraction of the artery. Wherever the arteries are close to the skin, you can feel