Nerve and Muscle Physiology
Twenty random questions from a hard bank of thirty on muscle contraction, the neuromuscular junction and nerve conduction.
Play this quizSample questions
The author has made the opening questions public. Play the full quiz in the app to see the rest, with answers and explanations.
What is the basic contractile unit of skeletal muscle?
- The tendon
- The sarcomere
- The motor unit
- The myofibril
The thick filaments of skeletal muscle are made of:
- Tropomyosin
- Actin
- Troponin
- Myosin
The thin filaments of skeletal muscle are made mainly of:
- Collagen
- Titin
- Myosin
- Actin
The sliding filament theory states that during contraction:
- The Z lines move apart
- Myosin dissolves
- The filaments themselves shorten
- Actin filaments slide over myosin, shortening the sarcomere
In skeletal muscle, calcium binds to:
- Calmodulin
- Actin directly
- Myosin
- Troponin C
In skeletal muscle, calcium for contraction is released from:
- The nucleus
- The mitochondria
- The sarcoplasmic reticulum
- The blood only
In the cross-bridge cycle, ATP is needed to:
- Bind calcium to troponin
- Release acetylcholine
- Make actin
- Detach myosin from actin (and pump calcium back)
Study this on QuizzyApp. Answer against the clock, review every question afterwards with the correct answer and the author's explanation, and track the topics you keep getting wrong. Open this quiz or browse everything else.
More in Physiology
Cell and Body Fluid Physiology
Body water, ions, membrane transport and homeostasis at speed. The physiology warm-up.
Blood Physiology
Red cells, white cells, platelets, clotting and blood groups. Unhurried, with explanations throughout.
Cardiovascular Physiology
Cardiac output, the cardiac cycle, the ECG and blood pressure control. Medium difficulty, one tap each.