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人体外表的毛发,是人体新陈代谢不可缺少的“零件”。生长在人体内部许多空腔脏器内膜上的“内毛”,都有重要的作用。嗅毛鼻腔上部的粘膜上,有大量的嗅觉细胞,其顶端有伸向鼻腔的嗅毛。当气体进入鼻腔时,嗅毛首先受到刺激,随之嗅觉细胞兴奋,并通过神经冲动传入大脑,为人体提供气味的信息。长期吸烟、大量饮酒、滥用滴鼻净等药
The appearance of human hair, human metabolism is an indispensable “parts.” There are many “inner hairs” that grow on the inner membrane of many hollow viscera inside the human body and play an important role. Sniffing the upper nasal mucosa, there are a large number of olfactory cells, the top of the nasal cavity extending to the snout hair. When the gas enters the nasal cavity, the olfactory hair is first stimulated, followed by the olfactory cells being excited and passing the nerve impulses into the brain to provide odor information to the body. Long-term smoking, heavy drinking, abuse of nasal drops and other drugs