Betaine is a byproduct of sugar beet processing. Betaine works by preventing the build-up of an amino acid called homocysteine.This amino acid can harm blood vessels and contribute to heart disease, stroke, or circulation problems.etaine is not a cure for homocysteinuria. Betaine may also be used for purposes not listed in this medication guide. Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.
A smooth muscle is excited by external stimuli, which causes contraction. Each step is further detailed below. Inducing stimuli and factors. Smooth muscle may contract spontaneously (via ionic channel dynamics) or as in the gut special pacemakers cells interstitial cells of Cajal produce rhythmic contractions.
Excitation-Contraction coupling & contraction in smooth muscle. Excitation-Contraction Coupling: Some of the most important differences between skeletal muscle and smooth muscle occur in excitation-contraction coupling.One element that is the same between the two forms of muscle is that calcium plays a starring role.Unfortunately, that is about the extent of the similarities.Smooth muscle differs in: the source of the calcium (relying both on extracellular and intracellular sources). how the release of the calcium into the intracellular space is accomplished (the control), and how the calcium is used to initiate the contraction.nfortunately, that is about the extent of the similarities. Smooth muscle differs in: the source of the calcium (relying both on extracellular and intracellular sources). how the release of the calcium into the intracellular space is accomplished (the control), and how the calcium is used to initiate the contraction.