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Questions and Answers
What type of muscle contraction occurs when the amount of tension increases despite the muscle length remaining the same?
What type of muscle contraction occurs when the amount of tension increases despite the muscle length remaining the same?
- Isotonic
- Concentric
- Isometric (correct)
- Eccentric
What is the primary function of myoglobin in muscle fibers?
What is the primary function of myoglobin in muscle fibers?
- To help bind oxygen in muscle (correct)
- To increase the speed of muscle contraction
- To facilitate anaerobic respiration
- To enhance the strength of muscle contraction
What is the term for the non-movable end of a skeletal muscle?
What is the term for the non-movable end of a skeletal muscle?
- Origin (correct)
- Belly
- Insertion
- Agonist
Which type of muscle fiber contracts quickly and is adapted for anaerobic respiration?
Which type of muscle fiber contracts quickly and is adapted for anaerobic respiration?
According to the all or none law, what is the characteristic of a muscle contraction?
According to the all or none law, what is the characteristic of a muscle contraction?
How are muscles typically named in human anatomy?
How are muscles typically named in human anatomy?
What is the primary function of ligaments in the human body?
What is the primary function of ligaments in the human body?
Which of the following is a characteristic of skeletal muscle fibers?
Which of the following is a characteristic of skeletal muscle fibers?
What is the term for the ability of muscles to recoil to their original shape after contraction?
What is the term for the ability of muscles to recoil to their original shape after contraction?
Which of the following is a type of connective tissue that surrounds each muscle fiber?
Which of the following is a type of connective tissue that surrounds each muscle fiber?
What is the name of the cell membrane that surrounds muscle fibers?
What is the name of the cell membrane that surrounds muscle fibers?
What percentage of body weight does skeletal muscle make up?
What percentage of body weight does skeletal muscle make up?
What is the primary role of calcium in muscle contraction?
What is the primary role of calcium in muscle contraction?
During muscle contraction, what is the primary function of ATP?
During muscle contraction, what is the primary function of ATP?
What is the term for the shortening of a muscle fiber due to the contraction of its sarcomeres?
What is the term for the shortening of a muscle fiber due to the contraction of its sarcomeres?
What is the name of the enzyme that breaks down acetylcholine, leading to muscle relaxation?
What is the name of the enzyme that breaks down acetylcholine, leading to muscle relaxation?
What is the structure that allows the electrical impulse to reach the sarcoplasmic reticulum and trigger muscle contraction?
What is the structure that allows the electrical impulse to reach the sarcoplasmic reticulum and trigger muscle contraction?
What is the term for the process by which actin and myosin filaments slide past each other, resulting in muscle contraction?
What is the term for the process by which actin and myosin filaments slide past each other, resulting in muscle contraction?
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