WorksheetsMuscle Contraction - A Level PE
Total questions: 13
Worksheet time: 8mins
Name
Class
Date
1.
What is the specific neurotransmitter that stimulates the movement of skeletal muscles?
a)
GABA
b)
Acetylcholine
c)
Serotonin
d)
Dopamine
2.
Region where a motor neuron comes in close contact with a muscle cell.
a)
neurotransmitter
b)
muscular dystrophy
c)
muscle tension
d)
neuromuscular junction
3.
Identify structure 4 in the diagram.
a)
synaptic cleft
b)
sarcolemma
c)
vesicle
d)
Ca2+ ion
4.
Another name for a muscle cell.
a)
Fiber
b)
Sacrolemma
c)
Sacromere
d)
Fascicle
5.
Contractile unit of a muscle.
a)
sarcomere
b)
motor unit
c)
fascicle
d)
myofibril
6.
Thick filaments are in a myofibril are
a)
ATPase
b)
Sarcoplasmic reticulum
c)
Actin
d)
Myosin
7.
Thin filaments in a myofibril are
a)
Sarcomeres
b)
Sarcoplasm
c)
Actin
d)
Myosin
8.
The neurotransmitter stored in the axon terminal identified as #3
a)
Acetylcholine
b)
Protein Channel
c)
Calcium Ion (Ca2+)
d)
Syanptic Cleft
9.
What is acetylcholine?
a)
an ion pump on the postsynaptic membrane
b)
a source of energy for muscle contraction
c)
a component of thick myofilaments
d)
a neurotransmitter that stimulates skeletal muscle to contract
10.
What is the function of this entire diagram?
a)
controlling a nerve
b)
controlling a skeletal muscle contraction
c)
endocytosis
d)
inserting a musle on a bone
11.
Click all that apply. Which of these make up a motor unit?
a)
Motor neuron
b)
Muscle Fibers
c)
Muscle
d)
Nerve
12.
This is the electrical charge that travels down an axon when a neuron is firing
a)
Resting Potential
b)
Action Potential
c)
Threshold
d)
Refractory Period
13.
Nerve impulses within the neuron are sent in _____ form
a)
Electrical
b)
Chemical
c)
Electro-chemical
d)
Petrochemical
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