Please use the biological knowledge you have learned to answer the following questions: (1) The skin is the largest organ of the human body. It has the functions of protection, sensing external stimul

Please use the biological knowledge you have learned to answer the following questions: (1) The skin is the largest organ of the human body. It has the functions of protection, sensing external stimuli, regeneration, regulating body temperature and

(1) The dermis is thicker than the epidermis and is mainly composed of connective tissue. It contains abundant blood vessels and sensory nerve endings. Drugs can directly enter the capillaries in the dermis and enter the body through blood circulation

(2) Since the somatic motor center manages the voluntary movement of the skeletal muscles on the opposite side of the body, if the left side of the body is hemiplegic, it is due to damage to the somatic motor center of the right cerebral hemisphere. Blind people "read" Braille mainly rely on the somatosensory center and language center.

(3) There are more than 40 carcinogens in the smoke produced by smoking, and more than ten substances that can promote the development of cancer. Among them, the most harmful to the human body are nicotine, carbon monoxide, tar and a variety of other substances. Metal compounds. These toxic substances first directly enter the human respiratory system, causing respiratory diseases such as tracheitis, bronchitis, pneumonia, and lung cancer. To encourage people to cherish life and stay away from tobacco. You can write the following anti-smoking slogans: If you establish a good attitude and refuse the first cigarette, the cigarette in your hand today will be your departure tomorrow. For the health of you and your family, please don’t smoke; a smoke-free world will be refreshing; stay away from tobacco and advocate health; cigarettes burn and consume life.

So the answer is: (1) Dermis; (2) Right; Language center; (3) For the health of you and your family, please don’t smoke.