如图是人体部分组织示意图请据图回答1当人体受到刺激时兴奋只能由a传到b而不能由b传到a的原因是神经递质通过突触时只能由突触前膜传 Template




You need a modern browser try chrome, to view this.

Background image: Hide Show

View Larger Image Image Credit: 1010jiajiao.com






Try and sketch some of theseDrop spindle, Game, Hula hoop, Bell, Ski slope, Eggrolls, Trampoline, Rose, Skeleton, Crumpled paper, view more ideas


please wait, the page is loading...

More Sketches

Take a peek at some of the sketches created by our users, are you a sketchite?

anonymous
anonymous
sketch #3742 Homer by Koes Maung


anonymous
anonymous
sketch #4881


anonymous
anonymous
sketch #20594


anonymous
anonymous
sketch #5063 Super Meat Boy by Alexander Volodimirovich Danilchenko


sketchmaster
sketch #2627 Taz by sketchmaster


anonymous
anonymous
sketch #978


Marlyn Ortiz
sketch #2030


anonymous
anonymous
sketch #5219 Zayn Malik by Amila Madhushanaka


anonymous
anonymous
sketch #5289


Zorka Edding Giustinianovic
sketch #2852 Teddy Zorka Edding Giustinianovic


anonymous
anonymous
sketch #4387 dong air


anonymous
anonymous
sketch #3676 Sceptical horse by Koes Maung


anonymous
anonymous
sketch #5212 Katy Perry by Shahid Khokhar


anonymous
anonymous
sketch #3148


anonymous
anonymous
sketch #5259


anonymous
anonymous
sketch #3749 Girl Ari Rainbow


anonymous
anonymous
sketch #4640 Serj Tankian by Dav Guzman Mendoza


anonymous
anonymous
sketch #5222 Magic Art Tin Sheek


anonymous
anonymous
sketch #4821 Johnny M. by Z Ionut Ady


anonymous
anonymous
sketch #5340 Amazing Dragon


anonymous
anonymous
sketch #2070


anonymous
anonymous
sketch #970 Depression


anonymous
anonymous
sketch #3268 Werewolf by Mert Arda Yiğit


anonymous
anonymous
sketch #5009 Elen Jager from Attack on Titan


anonymous
anonymous
sketch #4885


anonymous
anonymous
sketch #5163


Ashok Kumar Chaturvedi
sketch #2699 Girl in shades Ashok Kumar Chaturvedi


anonymous
anonymous
sketch #542 life


anonymous
anonymous
sketch #5047 Pikachu and Raichu by Saiful Farizam


anonymous
anonymous
sketch #5188 Paul Walker by Taï Marsan

tomski如图是人体部分组织示意图请据图回答1当人体受到刺激时兴奋只能由a传到b而不能由b传到a的原因是神经递质通过突触时只能由突触前膜传 coloring