Muscle Fiber Microanatomy and sliding Filament Model sarcolemma. sarcoplasm, rarcoplasmic ieficul in, T tubulek, myotonhl. setemere, actis 20. What ars the fumctions of plycosomes and myopobin? 12) Ocicitie and identify on a diagram how the A bands and 1 bandi on a molitent create the ntrosh 12) Desenbe the structures of the myofiteme. Aso identify H zone, M line and the 2 discs 13) What is the function of the active sites, tropomyesin and troponin on actin? 15) Deline the word contraction as it relates to a sheletal muscle. 14) What is a triad? 16) Do thick and thin filaments change their length during a musele contraction? Muscle Fiber Contraction 17) List the 4 steps that must occur for a skeletal muscle to contract. Know that this is a summary of a much more complicated process called excitation-contraction coupling18) Label the structures at the neuromuscular junction: axon terminal, synaptic cleft, smaptic vesicles, ACh, junctional folds, ACh receptors. 19) Describe the events at the NMI starting with the AP ariving at the axon terminal and ending with the action of acetylcholinesterase. 20) What is E-C Coupling? 21) How does tropomyosin act to keep a muscle fiber relaxed? 22) During muscle relaxation, are calclum levels high or low in the sarcoplasm? 23) Describe the 4 steps of the cross bridge cycle.Muscle Fiber Microanatomy and Sliding Filament Model 8) Can skeletal muscles contain more than one nucleus? 9) Describe the functions of and identify on a diagram the following muscle fiber structures: sarcolemma, sarcoplasm, sarcoplasmic reticulum, T tubules, myofibrils, sarcomere, actin, myosin. 10) What are the functions of glycosomes and myoglobin? 11) Describe and identify on a diagram how the A bands and I bands on a myofibril create the striated appearance of skeletal muscle. Also identify H zone, M line and the Z discs. 12) Describe the structures of the myofilaments actin and myosin. 13) What is the function of the active sites, tropomyosin and troponin on actin? 14) What is a triad? 15) Define the word contraction as it relates to a skeletal muscle. 16) Do thick and thin filaments change their length during a muscle contraction? Muscle Fiber Contraction 17) List the 4 steps that must occur for a skeletal muscle to contract. Know that this is a summary of a much more complicated process called excitation-contraction coupling. 18) Label the structures at the neuromuscular junction: axon terminal, synaptic cleft, synaptic vesicles, ACh, junctional folds, ACh receptors. 19) Describe the events at the NMJ starting with the AP arriving at the axon terminal and ending with the action of acetylcholinesterase..

1. Muscle Fiber Microanatomy and sliding Filament Model sarcolemma. sarcoplasm, rarcoplasmic
ieficul in, T tubulek, myotonhl. setemere, actis 20. What ars the fumctions of plycosomes and
myopobin? 12) Ocicitie and identify on a diagram how the A bands and 1 bandi on a molitent
create the ntrosh 12) Desenbe the structures of the myofiteme. Aso identify H zone, M line and the
2 discs 13) What is the function of the active sites, tropomyesin and troponin on actin? 15) Deline
the word contraction as it relates to a sheletal muscle. 14) What is a triad? 16) Do thick and thin
filaments change their length during a musele contraction? Muscle Fiber Contraction 17) List the 4
steps that must occur for a skeletal muscle to contract. Know that this is a summary of a much
more complicated process called excitation-contraction coupling18) Label the structures at the
neuromuscular junction: axon terminal, synaptic cleft, smaptic vesicles, ACh, junctional folds, ACh
receptors. 19) Describe the events at the NMI starting with the AP ariving at the axon terminal and
ending with the action of acetylcholinesterase. 20) What is E-C Coupling? 21) How does
tropomyosin act to keep a muscle fiber relaxed? 22) During muscle relaxation, are calclum levels
high or low in the sarcoplasm? 23) Describe the 4 steps of the cross bridge cycle.Muscle Fiber
Microanatomy and Sliding Filament Model 8) Can skeletal muscles contain more than one
nucleus? 9) Describe the functions of and identify on a diagram the following muscle fiber
structures: sarcolemma, sarcoplasm, sarcoplasmic reticulum, T tubules, myofibrils, sarcomere,
actin, myosin. 10) What are the functions of glycosomes and myoglobin? 11) Describe and identify
on a diagram how the A bands and I bands on a myofibril create the striated appearance of
skeletal muscle. Also identify H zone, M line and the Z discs. 12) Describe the structures of the
myofilaments actin and myosin. 13) What is the function of the active sites, tropomyosin and
troponin on actin? 14) What is a triad? 15) Define the word contraction as it relates to a skeletal
muscle. 16) Do thick and thin filaments change their length during a muscle contraction? Muscle
Fiber Contraction 17) List the 4 steps that must occur for a skeletal muscle to contract. Know that
this is a summary of a much more complicated process called excitation-contraction coupling. 18)
Label the structures at the neuromuscular junction: axon terminal, synaptic cleft, synaptic vesicles,
ACh, junctional folds, ACh receptors. 19) Describe the events at the NMJ starting with the AP
arriving at the axon terminal and ending with the action of acetylcholinesterase.