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StudyStack Set 1

Week 7: Assignment Physiology

TermDefinition
Cell Structure The basic parts of a cell that allow it to function, including the membrane, cytoplasm, and nucleus.
Articulations Joints where two or more bones meet, allowing movement or support.
Muscle Contraction The process where muscle fibers shorten and produce movement when stimulated by nerves.
Myosin A thick protein filament in muscle fibers that pulls on actin to make muscles contract.
Actin A thin protein filament in muscle fibers that works with myosin to help muscles contract.
Nerve Signaling The way nerves send electrical and chemical messages through the body to control actions and responses.
Neurotransmitter A chemical messenger released by neurons to send signals to other cells.
Stimulus-gated channel A channel in a cell membrane that opens or closes when triggered by a specific stimulus (like touch or chemicals).
Action potential A sudden electrical signal that travels along a nerve or muscle cell to send information.
Ionic channel. A pathway in the cell membrane that lets ions (charged particles) move in and out of the cell.
Local potential. A small, temporary change in a cell’s electrical charge caused by a stimulus before an action potential happens.
Created by: AiyanaBellamy
 

 



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