muscle fiber

a microscopic strand of muscle tissue that functions as a molecular machine converting chemical energy into force. Thousands of muscle fibers are linked by connective tissue into a muscle. Each fiber is, in turn, composed of millions of longitudinally aligned protein filaments. It is the interaction of actin and myosin protein molecules (sometimes together referred to as actomyosin) in these filaments that creates muscle contraction.

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Psychology term of the day

February 21st 2025

reflection of feeling

a statement made by a therapist or counselor that is intended to highlight the feelings or attitudes implicitly expressed in a client’s communication and to draw them out so that they can be clarified. Also called reflection response.