Flashcards in Ch10 Deck (34)
A dense layer of collagen fibers that surrounds a skeletal muscle and is continuous with the tendons/aponeuroses of the muscle and with the perimysium.
A connective tissue partition that separates adjacent fasciculi in a skeletal muscle.
A small bundle; usually refers to a collection of nerve axons or muscle fibers.
A delicate network of connective tissue fibers that surrounds individual muscle cells.
Byronic stem cells that function in the repair of damaged muscle tissue
A collagenous band that connects a skeletal muscle to an element of the skeleton.
A broad tendinous sheet that may serve as the origin or insertion of a skeletal muscle.
The plasma membrane of a muscle cell.
The cytoplasm of a muscle cell.
The transverse, tubular extensions of the sarcolemma that extend deep into the sarcoplasm, contacting cisternae of the sarcoplasmic reticulum.
Organized collections of myofilaaments in skeletal and cardiac muscle cells.
A cytoskeletal filament in a skeletal or cardiac muscle cell; consists of actin, troponin, and tropomyosin.
A cytoskeletal filament in a skeletal or cardiac muscle cell; composed of myosin with a core of titin.
A myosin head that projects from the surface of a thick filament and that can bind to an active site of a thin filament in the presence of calcium ions.
A synapse between a neuron and a muscle cell.
A single stimulus contraction relaxation cycle in a skeletal muscle.
If tension rises in stages like the steps in a staircase; if a skeletal muscle is stimulated a second time immediately after the relaxation phase has ended, the resulting contraction will develop a slightly higer maximum tension.
Occurs when higher stimulant frequency eliminates the relaxation phase
the muscle as a whole does not change length and the tension produces never exceeds the load
tension rises and the skeleton muscles length changes
The smallest contractile unit of a striated muscle cell.
A propagated change in the transmembrane potential of excitable cells, initiated by a change in the membrane permeability to sodium ions.
A narrow space, separates the synaptic terminal of the neuron from the opposing sarcolemmal surface.
A chemical neurotransmitter in the brain and peripheral nervous system.
A high-energy compound in muscle cells; during muscle activity, the phosphate group is donate to ADP, regenerating ATP.
The complete breakdown of organic substrates into carbon dioxide and water, via pyruvic acid; a process that yields large amounts of ATP but requires mitochondria and oxygen.
Without oxygen; The anaerobic cytoplasmic breakdown of glucose into lactic acid by way of pyruvic acid, with a net gain of two ATP molecules.
A compound produced from pyruvic acid under anaerobic conditions.
The conditions in muscle fibers are returned to normal, preexertion levels.