WorksheetsS&C Chapter 1
Total questions: 11
Worksheet time: 5mins
Which skeleton includes the ribs?
Appendicular
Axial
Pelvic
Cranial
Which structure surrounds a single muscle fiber?
Sarcolemma
Tendon
Epimysium
Fasciculus
What are the two types of myofilaments?
Actin and Myosin
Sarcoplasm and Sarcolemma
Endomysium and Perimysium
Epimysium and Fasciculus
What surrounds each muscle fiber?
Sarcoplasm
Sarcolemma
Sarcoplasmic reticulum
Myofibrils
What is the main purpose of the myelin sheath?
To protect the neuron
To speed up signal transmission
To store neurotransmitters
To connect to muscle fibers
What is the significance of the H-zone?
Contains only actin filaments
Contains only myosin filaments
Contains both actin and myosin filaments
Contains no filaments
Where is calcium released from during muscle contraction?
Mitochondria
Sarcoplasmic reticulum
Nucleus
Golgi apparatus
What occurs during the relaxation phase of muscle action?
Calcium is released.
Myosin crossbridge heads attach to actin.
Neural input stops and calcium is pumped out.
ATP is replenished.
What is the sequence of events in the sliding-filament theory?
Resting, Excitation, Contraction, Recharge, Relaxation
Excitation, Resting, Contraction, Relaxation, Recharge
Contraction, Recharge, Relaxation, Resting, Excitation
Relaxation, Recharge, Contraction, Excitation, Resting
What initiates the sequence of events in muscle action?
Muscle contraction
Action potential in motor neuron
Calcium ion release
ATP hydrolysis
