Category: S
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Stabilizer muscle
A muscle that supports a body segment so muscles attached to it can function.
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Sphincter muscle of urinary bladder
The smooth muscle fibers around the origin of the urethra. Contraction of this muscle prevents urination; relaxation permits it.
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Somatic muscle
Muscle derived from mesodermal somites, including most skeletal muscle.
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Serratus anterior muscle
A muscle of the upper trunk originating on the first eight or nine ribs and inserted on the anterior surface of the vertebral border and inferior angle of the scapula. It keeps the scapula in position close to the chest wall, abducts the scapula, and turns it upward to raise the point of the shoulder.…
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Seagull murmur
A murmur that resembles the cry of a seagull; sometimes associated with aortic insufficiency.
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Segmenting movement
Movement of the intestine in which annular constrictions occur, dividing the intestine into ovoid segments.
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Saccadic movement
Jerky movements of the eyes as they move from one point of fixation to another.
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Sphagnum moss
Peat moss. It has been used as a surgical bandage and by some primitive people as a form of external menstrual protection.
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Substance-induced mood disorder
A prominent and persistent disturbance in mood characterized by either or both of the following: depressed mood or markedly diminished interest or pleasure in all, or almost all, activities; and elevated, expansive, or irritable mood. The clinical and laboratory findings must support that either the symptoms developed during, or within a month of, substance intoxication…
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Stone mole
A fleshy mole that has undergone calcific degeneration in the uterus.