plural supplies. Learner's definition of SUPPLY. 1. : the amount of something that is available to be used. [count] the nation's food/oil supply. adequate/sufficient supplies of fresh water. He bought a month's supply of cigarettes.
APPENDICULAR-posterior leg muscle; QUADriceps femoris; knee extension, flex thigh vastus lateralis APPENDICULAR-posterior leg muscle; QUADriceps femoris; knee extension
The arrector pili muscles are small muscles attached to hair follicles in mammals . Contraction of these muscles causes the hairs to stand on end, known colloquially as goose bumps . Each arrector pili is composed of a bundle of smooth muscle fibres which attach to several follicles (a follicular unit), and is innervated by the sympathetic branch of the autonomic nervous system .