The Plantar surface; that part of the foot that faces the ground.
Sodium-Potassium (Na-K) Pump
Membrane-bound transporter that transports potassium ions into the cytoplasm from the extracellular fluid, simultaneously transporting sodium ions from the cytoplasm to the extracellular fluid usingenergy; also known as sodium- potassium ATPase or sodium-potassium exchange pumps.
Smooth Muscle
Muscle found in the viscera.
Small Intestine
The long tube located between the stomach and the ileocecal valve.
Slow Fiber
Muscle fiber that slowly responds to a stimulus.
Sliding Filament Theory
Muscle contraction process in which the actin and myosin filaments slide over each other.
Skull
Collectively the bones of the head.
Skin Rolling
Massage technique in which tissue superficial to the deep fascia is grasped and, using gliding strokes, lifted and rolled over in a wavelike motion.