concept

muscle contraction

Also known as: muscle fiber contraction, muscular contraction, muscle contractions

Facts (10)

Sources

Bioelectricity | Cell Signaling, Nerve Impulses & Muscle Contractions britannica.com Britannica Mar 10, 2026 3 facts

claimMuscle cells utilize electric pulses similar to action potentials to accompany muscular contraction.

accountLuigi Galvani and Alessandro Volta conducted experiments in the 18th century on the connection between electricity and muscle contraction in frogs and other animals, which contributed to the development of physics and physiology.

claimIn nerve and muscle cells, chemical or electrochemical stimulation causes temporary changes in cell membrane permeability, allowing the electric potential to discharge as a current that propagates along nerve fibers or activates muscle fiber contraction.

Homeostasis and Feedback Loops | Anatomy and Physiology I courses.lumenlearning.com Lumen Learning 2 facts

claimDuring exercise, human muscle cells convert energy stored in glucose into ATP (adenosine triphosphate) to power muscle contractions, a process that consumes oxygen.

claimThe release of energy from ATP molecules during muscle contraction generates heat, which increases human body temperature.

Sex differences in the cardiopulmonary and neuromuscular ... biorxiv.org bioRxiv Nov 11, 2024 1 fact

claimMales typically possess a greater quantity of muscle mass and can generate larger maximal force, but they experience greater proportional occlusion of limb blood flow during muscle contraction compared to females.

Extent and Health Consequences of Chronic Sleep Loss and ... - NCBI ncbi.nlm.nih.gov Colten HR, Altevogt BM · National Academies Press 1 fact

claimJuvenile myoclonic epilepsy is characterized by synchronous involuntary muscle contractions that often occur during awakening.

Understanding the Science behind Bioelectricity - Hilaris Publisher hilarispublisher.com Poonam Gupta · Hilaris Publisher 1 fact

claimBioelectric signals regulate physiological processes including muscle contraction, nerve signaling, and hormone secretion.

Bioelectricity - Nature nature.com Nature 1 fact

claimBioelectricity underpins essential physiological processes in living organisms, including nerve impulses, muscle contractions, and cellular signaling.

Non-physicalist Theories of Consciousness cambridge.org Cambridge University Press Dec 20, 2023 1 fact

accountThe physical process of moving an arm away from a painful position involves nerves in the arm being stimulated, electrical signals traveling to the brain, the release of neurotransmitters between neurons, and electrical signals returning to the arm to cause muscle contraction.