静脉的作用是收集血液返回心脏下列静脉的特点中与防止血液倒流相适应的结构特点主要是 A与心脏相通b管腔大其内表面有静脉瓣c管壁薄 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 theseGrapes, Bumps, Bell, Indian, Trowel, Hunter, Lion, Breadbox, Canoe, Rope, 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 #3174 John Snow Helga Fon Stein


anonymous
anonymous
sketch #3505 Django


Na Ruro
sketch #2715 Angelina


anonymous
anonymous
sketch #1219


anonymous
anonymous
sketch #5197 Rihanna by Ben Hall


anonymous
anonymous
sketch #3749 Girl Ari Rainbow


anonymous
anonymous
sketch #5088


anonymous
anonymous
sketch #871 vampire girl anime


anonymous
anonymous
sketch #4903 Naruto & Kurama by Fatér Szilvia


anonymous
anonymous
sketch #690 barco


Donara Smbatyan
sketch #1448 donara


anonymous
anonymous
sketch #4031


anonymous
anonymous
sketch #3950


anonymous
anonymous
sketch #1993


anonymous
anonymous
sketch #5037 Dolphin by Meen Suksoi


anonymous
anonymous
sketch #4424 MJ by Nycole Prietsch


Donara Smbatyan
sketch #1551 donara


anonymous
anonymous
sketch #3779 RIP Hugo Chavez Joey Hyuuga


Nemo Archt
sketch #4134 1 min sketch


anonymous
anonymous
sketch #4387 dong air


anonymous
anonymous
sketch #3765 Happy easter!


Zay Lin
sketch #2087 zay lin


anonymous
anonymous
sketch #5095 Lion by Frederic Knauer


anonymous
anonymous
sketch #3378


anonymous
anonymous
sketch #4475 Daft Punk by Reggie Garcia


anonymous
anonymous
sketch #5327


Tom Kelly
sketch #12 my bear


Ainhoa White
sketch #4301


anonymous
anonymous
sketch #5313 Katy Perry by Monalisa Theresia

tomski静脉的作用是收集血液返回心脏下列静脉的特点中与防止血液倒流相适应的结构特点主要是 a与心脏相通b管腔大其内表面有静脉瓣c管壁薄 coloring