第十二章:昆虫的气管系统 htto //w facultyucr edu-ingerts /pagesteac hingresourcestles/RESPIRATORY OR VENTILATORY SYSTEM pd
第一节气管系统的结构和功能 Spirade Opening RESPIRATION httn /nfaculty Dredw-inseuts/pagesteachingresourcesiiles/RESPIRATORY OR VENTILATORY SYSTEM pr
MER GIANT- Immense insects such as gan6ra,音dragonfly w代h the wingspon of a hawk ed 300 million years ago,when the atmospheric con tion of oxygen was much higher than It is today 1. Earth's atmosphere had little if any oxygen until 2.5 billion years and the origin of chlorophyll producing plants 2. Oxygen levels have fluctuated throughout the history of the earth 3. High oxygen levels permitted great biological experimentation and greater diversity 4. Low oxygen levels caused mass extinction of those organisms requiring high levels of oxygen Information taken from Science News,Dec.17,2005,vol.168,pp.395-6 Title=Changes in the air-variations in atmospheric oxygen have affected evolution in big ways
G小必 气门的构造 A U。Toks T1A12345 无气门腔 有气门腔(外闭式、内闭式) 气管口 体壁 气门腔口围气门片 气门腔 气管 A B 喜萨津皂华购瑞刻生辈 h-mg W:The Auafomica.边edh/gy行nu
背血管 背板 背隔 背气管 G必¥子 消化道 内脏气管 es 1 Tokus A12345678 气门气 气门 气管 腹神经素 骨血管 背纵干 背纵干 侧纵干 刻纵干 消化道 气管的分布 气门 内脏纵干 内脏纵干 腹纵干 腹纵干 衷神经案 图142昆虫气管分布模式图 A.体躯横切面,示体节内的气管分布:B.体眼侧面透射,示气管干(仿Snodgrass)
气管的结构 Mitochondrion Tracheal cell 凰肉 Cuticulin 细胞 内 Nudeus Basement 支气管 membrane 8 Chitin and protein lave Tracheae 温率多虫闪州生理 如=为地3】2如d业y年 htin /www faculty ucrAduinsectspagesteachingresources/esRESPIRATOPY OR VENTILATORY SYSTEM Bar
X-rays shot through this wood beetle revealed an unknown insect breathing mechanism. Image courtesy of the Field Museum. http://www.anl.gov/Media_Center/Frontiers/2004/ c3facil.html Video:http://www.sciencemag.org/feature/data/bioimaging/bug.htm 多洋:虫深生 少身电出值2al四e时y3y时堂