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WorksheetsSliding FIlament Theory
Total questions: 16
Worksheet time: 14mins
Contractile unit of a muscle.
sarcomere
motor unit
fascicle
myofibril
Thick filaments are in a myofibril are
ATPase
Sarcoplasmic reticulum
Actin
Myosin
Thin filaments in a myofibril are
Sarcomeres
Sarcoplasm
Actin
Myosin
Calcium:
causes ATP binding to actin
increases the action potential along the sarcolemma
binds to proteins on myosin
triggers the binding of myosin to actin
What is a crossbridge?
Where myosin binds to actin
Where the calcium crosses into the cytoplasm
Where calcium binds with troponin
None of the answers are correct.
The energy needed to perform a muscle contraction comes directly from
ATP
Oxygen
Glucose
Calcium
The neurotransmitter stored in the axon terminal identified as #3
Calcium Ion (Ca2+)
Protein Channel
Acetylcholine
Synaptic Cleft
What is the structure that stores the Calcium in the muscle cell.
Sarcoplasm
Sarcolemma
Myoglobin
Sarcoplasmic Reticulum
Which filament slides inward during muscle contraction
Actin
Myosin
the neuron that transmit impulse from central nervous system to muscle effector is called
sensory neuron
motor neuron
during full muscle contraction, which region disappear?
I band
M line
H zone
A band
Which region consists only actin (thin filament)?
I band
M line
H zone
A band
Which part separate one sarcomere to the next?
M line
I band
H zone
Z line
