 The year's best pictures from the world of medicine
[ 2009-10-21 11:41 ]
5 毛囊感覺神經(jīng)末梢
這張顯微圖像顯示的是毛囊的感覺神經(jīng)末梢。感覺神經(jīng)末梢(sensory nerve ending)是感覺神經(jīng)元周圍突的終末部分，該終末與其他結(jié)構(gòu)共同組成感受器。感受器能接受內(nèi)、外環(huán)境的各種刺激，并將刺激轉(zhuǎn)化為神經(jīng)沖動(dòng)，傳向中樞，產(chǎn)生感覺。圖中的色彩是將該組織用硝酸銀處理后呈現(xiàn)的，如同處理膠片一般。神經(jīng)軸突是正在消褪的黑色部分。照片是由斯匹克－沃克爾(Spike Walker)提供的。
Image 5 of 20 This image shows sensory nerve endings at the end of a hair follicle. Sensory nerves respond to stimuli to communicate movement, pressure and pain. The colours in this image were created by treating the tissue with silver nitrate and then processing it like photographic film. The nerve axons are stained black. (Image: M. I. Walker) [NewScientist]
|
