WorksheetsMuscles
Total questions: 20
Worksheet time: 13mins
Which of the following is NOT a function of muscles?
produce movement
produce energy
stabilize joints
generate heat
A bundle of myofibrils is a
muscle
sarcomere
muscle fiber
fascicle
The contractile unit of a muscle made of actin and myosin.
tendon
fascicle
muscle
sarcomere
Myofilaments are made of
fascicles
myosin
myofibrils
actin
Which of the following marks the end of a sarcomere?
H zone
Z disc
M line
A band
Which action bends a joint, or decreases the angle between bones?
Circumduction
Rotation
Extension
Flexion
The biceps brachii flexes the forearm and the triceps brachii extends the forearm. The biceps brachii acts as a(n) _____ to the triceps brachii.
Prime Mover
Antagonist
Synergist
Fixator
The temporalis, along with the masseter, closes the jaw. The temporalis acts as a(n) _________ to the masseter.
Prime Mover
Antagonist
Synergist
Fixator
The masseter has the major responsibility for closing the jaw. The masseter is a
Prime Mover
Antagonist
Synergist
Fixator
The neurotransmitter stored in the axon terminal and initiates muscle contraction; identified as #3
