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SBI4U - Smooth Muscles



Smooth muscle causes slow contractions of many internal organs Smooth muscle provides the contractile force for most of our internal organs, which are under the control of the autonomic nervous system. Smooth muscle moves food through the digestive tract, controls the flow of blood through blood vessels, and empties the urinary bladder. Structurally, smooth muscle cells are the simplest muscle cells. They are smaller than skeletal muscle cells, usually long and spindle-shaped, and each has a single nucleus. They are “smooth” because the actin and myosin filaments are not as regularly arranged as they are in skeletal and cardiac muscle, and so do not produce the striated appearance.

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behnam asadi
behnam asadi
Aug 15, 2019

:/ Ammmmm great... but, sorry how is it related to my topic? :\

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Fariba Bashiri
Fariba Bashiri
Aug 15, 2019

There’s an old saying that we are what we eat. The truth is that the fuel that you put into your body is just as important as the fuel that you put in your car or truck. But I’m willing to bet that you take much more care in picking out the fuel that you put in your automobile than to that you put in your mouth. The problem is that most of us don’t know what fuel to put into our body so we eat the foods that are most advertised or most readily available or most familiar. And it’s confusing because even the “experts” aren’t in agreement on the subject. So, here is what we have t…

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