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Terms in this set (22)
Sheet of dense connective
tissue that encloses a muscle.
Cordlike or bandlike mass
of dense connective tissue that connects
a muscle to a bone.
Sheets of connective tissue that attaches muscles
to bones and other muscles.
Any of the threadlike bundles of filaments in striated muscle cells.
Protein that, with actin, forms the filaments that interact to contract muscle fibers.
Protein in a muscle fiber that forms the thin filaments that slide between filaments of the protein myosin, shortening the muscle fibers.
Structural and functional unit of a myofibril.
Protein that attaches myosin filaments to z lines in muscle.
Protein that regulates muscle contraction by altering the position of tropomyosin.
Protein that blocks muscle contraction until its position is modified by troponin when calcium ions are present
Membranous network of channels and tubules in a muscle fiber, corresponding to the endoplasmic reticulum of other cells.
Membranous channel that extends deep into the cell from a muscle fiber membrane.
Enlarged portion of
the sarcoplasmic reticulum near the
actin and myosin filaments of a muscle
Group of three structures; in
muscle, two cisternae and a transverse
between the axon of one neuron and the
dendrite or cell body of another neuron
or the membrane of another cell type
Chemical that an axon secretes, into
a synapse, that stimulates or inhibits
an effector (muscle or gland) or other
that conducts impulses from the central
nervous system to an effector.
Synapse between a motor
neuron and a skeletal muscle fiber;
motor end plate
Specialized part of a muscle fiber
membrane at a neuromuscular junction.
extracellular space between the cells at
neurotransmitter, which is a biochemical
secreted into the synaptic clefts at the
axon ends of neurons; ACh.
sliding filament model
Muscles shorten when the
thin (actin) and thick (myosin) filaments
slide past each other, pulling on the
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