Why is a basic understanding of muscle physiology crucial for training?

Muscle Physiology and Contraction Concepts

Interactive Video
•

Liam Anderson
•
Biology, Science, Physical Ed
•
10th - 12th Grade
•
1 plays
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Easy
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It helps in making logical training decisions.
It is not necessary for training.
It only helps in understanding nutrition.
It is only important for professional athletes.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of connective tissue in muscles?
To hold muscle fibers together and provide resilience.
To store calcium for muscle contraction.
To transport oxygen to muscles.
To provide energy to muscles.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a motor unit composed of?
Only muscle fibers.
Only nerve fibers.
A motor neuron and the muscle fibers it innervates.
Blood vessels and connective tissue.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of the sarcoplasmic reticulum in muscle cells?
To transport oxygen.
To provide structural support.
To store and release calcium.
To produce ATP.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the sliding filament theory?
A theory on muscle relaxation.
A theory explaining muscle growth.
A theory about muscle fatigue.
A theory describing how muscles contract by sliding actin over myosin filaments.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of calcium in muscle contraction?
It strengthens the muscle fibers.
It blocks the binding sites on actin.
It allows actin and myosin to bind by moving the troponin-tropomyosin complex.
It provides energy for contraction.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
During which phase of muscle contraction is ATP required to release the myosin head?
Recharge phase
Contraction phase
Excitation-contraction coupling phase
Resting phase
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens during the relaxation phase of muscle contraction?
Calcium is released into the myofibrils.
Calcium is taken back into the sarcoplasmic reticulum.
ATP is used to detach myosin heads.
The myosin heads bind to actin.
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What dictates the force production of a muscle?
The number of mitochondria in the muscle.
The amount of blood flow to the muscle.
The size of the muscle fibers.
The number of cross-bridges formed between actin and myosin.
10.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is ATP necessary for muscle contraction?
It provides energy for the power stroke.
It stores calcium in the sarcoplasmic reticulum.
It strengthens the muscle fibers.
It blocks the binding sites on actin.
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