With a bunch of awesomeness by me. JC kilkenny.
no
You could try with a bit of sand paper and try and scrub a wall smooth.
The main muscle in the bladder is called the Detrusor muscle (which is a smooth muscle). it is circular.
u pass
It is easy for air to pass across the wall of an air sac because the wall is thin.
smooth
smooth muscle tissue. it is an involuntary muscle and the stomach can be controled by you.
Vasodilation
Vasoconstriction is normal contraction of smooth muscle in the artery wall.
RUN.DMC and you will be haxore
RUN.DMC and you will be haxore
It will be diffuse reflection. No matter how smooth the wall looks it is rough on a microscopic scale and will scatter the light.