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夏天到了,稍微干点累活或者喝上一碗热面汤,马上浑身是汗,甚至脸上的汗直往下流,手心就像沾了水一样…… 这么多汗是从哪儿来的呢?原来人的身体表面有300～500万,甚至多达1500万个出汗小孔,医学上叫汗孔,汗孔下面连着一根根很细的小管叫汗管,管的末端有个腺体叫小汗腺,汗液就是由它产生,而经汗管排到身体表面的。 体表各部位的出汗量不是平均分布的,手掌、足底、前额汗孔的数量最多,因而出汗最多,而大腿,尤其是大腿伸侧面汗孔少,所以出汗少些。 出汗对人体有极重要的生理功能。在炎热的夏天,身体需要向
The summer is over, a little dry-biting or drinking a bowl of hot noodle soup, immediately covered with sweat, and even the face of the sweat straight down, palpable water like the same ... ... so many sweat come from? Human body surface has 300 to 5 million, and even up to 15 million sweat pores, medicine called sweat hole, sweat hole connected to a small tube under the tube called Khan, the end of the tube has a gland Called sweat glands, sweat is produced by it, and sweat tube discharged to the body surface. Sweat volume of various parts of the body surface is not evenly distributed, the palms, soles, forehead sweat pores the largest number of sweating the most, while the thigh, especially the thigh side sweat pores less sweating less. Sweating on the human body has an extremely important physiological function. In the hot summer, the body needs to