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.
Smooth muscles do not have motor end plates. The postganglionic autonomic neuron divides into branches in the smooth muscle fibers, and each branch has a series of swollen regions called varicosities, which contain vesicles filled with neurotransmitter that is released when an action potential arrives.ttached to the bone and moves them by contraction. The contraction is initiated by neural impulses and is under voluntary control. Structure. A muscle consists of a number of muscle fibers bound together by connective tissue and it is attached to a bone by collagen bundles called tendons.