Human Anatomy. Chapter 10 The Muscular System
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What are the 4 basic properties of all muscle tissue (skeletal, cardiac, and smooth)?
What are the 5 basic functions of a skeletal muscle?
- -regulate flow
- -maintain temperature
What layer of connective tissue surrounds the entire muscle?
What layer of connective tissue divides the muscle into a series of internal compartments containing a bundle of muscle fibers and contains blood vessels and nerves that branch to supply each bundle of fibers?
What is the technical term for a bundle of muscle fibers?
What layer of connective tissue surrounds each muscle fiber, binds each fiber to its neighbor, and supports capillaries that supply blood to individual muscle fibers?
What do we call a thick cord or cable formed from the convergence of the connective tissue layers of a muscle that bind the muscle to bone, skin, or another muscle?
What do we call a convergence of connective tissue layers if it takes the form of a flattened sheet rather than a cord/cable?
What do we call the site of chemical communication between a nerve and a skeletal fiber?
What is the technical term for the plasma membrane of a skeletal muscle cell?
What is the name of the deep indentations of the skeletal muscle cell's plasma membrane that extend into the cytoplasm and carries electrical impulses that stimulate and coordinate muscle contractions?
What is the technical term for the structures, composed of bundles of protein filaments, that can shorten are therefore responsible for muscle contraction?
What is the name of the repeating unit of protein fibers in an myofibril?
what protein is found in the THICK filaments of a myofibril?
What protein is found in the THIN filaments of a myofibril?
At what region do proteins bind thick filaments at the center of the sarcomere?
At what region do proteins bind thin filaments at the ends of the sarcomere?
What region of the sarcomere contains only thick filaments (including the m-line)?
What region of the sarcomere contains only thin filaments (continuous between sarcomeres and includes the z-line)?
What region of the sarcomere consists of the entire region with thick filaments (both overlapping thick and thin filaments and only thick filaments)?
What do we call all of the muscle fibers controlled by a single motor neuron?
What does the size of the motor unit (# of muscle fibers) tell us?
Fewer myofibrils per neuron= greater control
What type of muscle fibers are smaller in diameter, contain densely packed myofibrils, have large glycogen reserves, have a few mitochondria, and are prone to fatigue?
What type of muscle fibers are smaller in diameter, have an extensive capillary network, contain myoglobin (stores oxygen), and have many mitochondria?
What do we call the attachment site of a muscle that (generally) remains stationary?
What do we call the attachment site of a muscle that moves during contraction?
What do we call a muscle whose contraction is mostly responsible for producing a movement?
What do we call a muscle that assists the primary muscle in performing a movement?
What do we call a muscle whose actions oppose those of another muscle?
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