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.
Vasoconstriction is normal contraction of smooth muscle in the artery wall.
smooth muscle tissue. it is an involuntary muscle and the stomach can be controled by you.
smooth
Vasodilation
With a bunch of awesomeness by me. JC kilkenny.
RUN.DMC and you will be haxore
RUN.DMC and you will be haxore
Smooth muscle
You just get past them...
It will be diffuse reflection. No matter how smooth the wall looks it is rough on a microscopic scale and will scatter the light.