Muscles and Movements Quiz
Preview:
Movement of the arm/leg away from the midline
A. adduction
B. eversion
C. inversion
D. abduction
Which types of movement are permitted by the hip joint?
A. flexion and extension
B. adduction and abduction
C. rotation
D. all the above
What structural component separates each sarcomere?
A. The M line
B. The Z line
C. The H Zone
D. The A Zone
What is the structure that stores the Calcium in the muscle cell.
A. Sarcoplasm
B. Sarcolemma
C. Sarcoplasmic Reticulum
D. Myoglobin
In the diagram of a motor unit, what is represented by the part labelled X?
A. Axon
B. Neuromuscular synapse
C. Nucleus
D. Dendrite
Which types of movement are permitted by the elbow joint?
A. flexion and extension
B. abduction and adduction
C. rotation
D. all the above
What is the name of the gap between two neurons?
A. Synapse
B. Dendrite
C. Axon
D. Cell body
Movement to bend a joint
A. extension
B. circumduction
C. eversion
D. flexion
___ and ___ are regulatory proteins bound to actin.
A. Troponin and tropomyosin
B. Myosin and actin
C. Calcium and Oxygen
D. Glycogen and hemoglobin
Movement of arm/leg toward the midline
A. flexion
B. extension
C. adduction
D. abduction
Which of the following statements is true about the sliding filament theory?
A. During contraction the H zone remains the same length
B. A cross-bridge is formed by troponin and tropomysin attaching to one another
C. A nerve impulse causes an action potential to spread across the muscle
D. ATP is released around the filaments, stimulating the muscle to contract
Calcium:
A. causes ATP binding to actin
B. increases the action potential along the sarcolemma
C. binds to proteins on myosin
D. triggers the binding of myosin to actin
What is the definition of atrophy?
A. Reduction in size or wasting away of an organ or tissue
B. The ability of a muscle to shorten forcibly when stimulated
C. An increase in the size of a tissue or organ
D. The ability to stretch a material beyond its resting length
Thin filaments in a myofibril are
A. Sarcomeres
B. Sarcoplasm
C. Actin
D. Myosin
The organelle that contains actin and myosin.
A. Tendon
B. myofilament
C. myofibril
D. Fiber
What is cholinesterase?
A. It’s an enzyme
B. It’s a mineral
C. It’s a muscle type
D. It’s neurotransmitter
What state is the sarcomere in #1
A. Relaxed
B. Contracting
C. Fully Contracted
D. None of the above
Movement to straighten a joint
A. extension
B. flexion
C. dorsiflexion
D. pronation
Movement of hand/foot so that the thumb/big toe moves away from the midline
A. inversion
B. eversion
C. adduction
D. abduction
Which number represents myosin filament?
A. 1
B. 5
C. 3
D. 4
What two chemicals are necessary for muscle contraction to occur?
A. Niacin and Potassium
B. Calcium and ATP
C. Sodium and Potassium
D. Ach and Potassium
Thick filaments are in a myofibril are
A. ATPase
B. Sarcoplasmic reticulum
C. Actin
D. Myosin
Region where a motor neuron comes in close contact with a muscle cell.
A. neurotransmitter
B. muscular dystrophy
C. muscle tension
D. neuromuscular junction
Movement of the hand/foot so that the thumb/big toe moves toward the midline
A. inversion
B. eversion
C. adduction
D. abduction
When a muscle contracts
A. both actin and myosin become shorter in length
B. myosin heads pull the actin towards the M line
C. actin heads pull myosin towards H line
D. the sarcomere length increases
Disclaimer:
Medical Quiz should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational and educational purposes only.