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WorksheetsMuscle Contraction Process
Total questions: 14
Worksheet time: 12mins
What does a motor unit contain?
motor neuron
motor neuron and muscle
muscle
a car
The (a) is the space between the muscle fiber and its axonal terminal.
What is the neurotransmitter for muscle contractions?
Acetylcholine (Ach)
Seratonin
Histamine
Dopamine
What is a neuro-muscular junction?
one axonal terminal and its muscle fiber
a joint
the combining of muscles
a neuron
What triggers the muscle to start contracting?
Ach
the neurotransmitter
your hand
the sarcomere
The neurotransmitter crosses the synaptic cleft to bind to a receptor where?
the chain
the the epimysium
the neuron
the sarcolemma
Depolarization happens when ____ flood into the ____.
(a)
In depolarization, what is released from the sarcoplasmic reticulum?
Hydrogen
Sodium
Calcium
Energy
Calcium bonds to the _____/____.
(a)
What are the regulatory proteins in the sarcomere?
Troponin
Amino Acids
Tropomyosin
Enzymes
Where do the regulatory proteins move during muscle contraction?
Into the H Zone
Out of the binding sites
Into the binding sites
To the sarcolemma
_____ heads bind to _____ to form cross bridges.
(a)
What provides energy?
Ach
Food
Light
ATP
When the heads "snap" what happens?
