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 theseWaffles, Secret code, Robot, Gizmo, Catfish, Campfire, Chimney, Feather duster, Army, Monastery, 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 #5116 Bleach by Vrushali Rane


anonymous
anonymous
sketch #5080 Megaman Zero (X) by Muhammad Raiyaan


anonymous
anonymous
sketch #3076 Angel by Burak Turan


Lucy Barnard
sketch #245 Fishy


anonymous
anonymous
sketch #2895 Hulk by Dmitry Cherepanin


anonymous
anonymous
sketch #20594


anonymous
anonymous
sketch #312


anonymous
anonymous
sketch #3753


anonymous
anonymous
sketch #5188 Paul Walker by Taï Marsan


anonymous
anonymous
sketch #2950 Miss Fortune from League of Legends by Araceli GM


anonymous
anonymous
sketch #4778


Raisa Mahmud
sketch #2055 Flower


anonymous
anonymous
sketch #5323 Cem Adrian by Glynis June Williams


sketchmaster
sketch #2628 Black haired women


anonymous
anonymous
sketch #846 cat fridayz z z zzzz zz


anonymous
anonymous
sketch #4736 Naruto by Wellen Lima


anonymous
anonymous
sketch #4874 Milla Jovovich by Kimmy Kitty Perry Priemus


anonymous
anonymous
sketch #1833 Head shot - abz


Pascal Quéru
sketch #2479 C 'est qui ? Un rasta qui a manger trop de poulpe farcis. ? Un vieux chanteur de blue grass ? Najdica tomktoo ? A vous de me dire...


anonymous
anonymous
sketch #4622 Miku by Kheith Ryan Lubiano


anonymous
anonymous
sketch #4724 Turtwig by Mark Robson


anonymous
anonymous
sketch #4232 Tobirama by Kadi Kader


anonymous
anonymous
sketch #1289 peace within


Rachel Roe
sketch #141 Sunset


anonymous
anonymous
sketch #20344


anonymous
anonymous
sketch #3701 amazing Skull


Donara Smbatyan
sketch #1435 donara

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