Podcast
Questions and Answers
What protein blocks the myosin binding sites on actin when the muscle is at rest?
What protein blocks the myosin binding sites on actin when the muscle is at rest?
- Troponin
- Calcium
- Myosin
- Tropomyosin (correct)
Which protein senses rises in calcium concentration and forces tropomyosin to change its shape?
Which protein senses rises in calcium concentration and forces tropomyosin to change its shape?
- Myosin
- Troponin (correct)
- Actin
- Tropomyosin
What type of contraction occurs when a muscle shortens to do work?
What type of contraction occurs when a muscle shortens to do work?
- Eccentric contraction
- Isotonic contraction
- Isometric contraction
- Concentric contraction (correct)
Where do motor neurons innervate skeletal muscle tissue?
Where do motor neurons innervate skeletal muscle tissue?
Which neurotransmitter is stored in the terminal boutons?
Which neurotransmitter is stored in the terminal boutons?
What is the center part of the A band where no thin filaments occur?
What is the center part of the A band where no thin filaments occur?
Which filaments are located in the center of the sarcomere?
Which filaments are located in the center of the sarcomere?
What is the full length of the thick filament in a sarcomere called?
What is the full length of the thick filament in a sarcomere called?
During muscle contraction, which filaments interact with each other?
During muscle contraction, which filaments interact with each other?
Which component holds the thick filaments together at the center of the H zone?
Which component holds the thick filaments together at the center of the H zone?
In which region of a sarcomere do thin filaments extend from Z disc toward the center?
In which region of a sarcomere do thin filaments extend from Z disc toward the center?
What is a muscle twitch?
What is a muscle twitch?
Which protein is affected in Duchenne muscular dystrophy (DMD)?
Which protein is affected in Duchenne muscular dystrophy (DMD)?
What is the most common form of muscular dystrophy?
What is the most common form of muscular dystrophy?
What happens when the protein dystrophin is mutated in DMD?
What happens when the protein dystrophin is mutated in DMD?
What is the characteristic symptom onset age for Duchenne muscular dystrophy (DMD)?
What is the characteristic symptom onset age for Duchenne muscular dystrophy (DMD)?
What causes pain in Myofascial Pain Syndrome?
What causes pain in Myofascial Pain Syndrome?
What are four functional properties that distinguish muscle tissue from other tissues?
What are four functional properties that distinguish muscle tissue from other tissues?
Which layers of connective tissue occur in and around skeletal muscle?
Which layers of connective tissue occur in and around skeletal muscle?
Which symptoms are associated with myofascial pain syndrome?
Which symptoms are associated with myofascial pain syndrome?
What are some symptoms commonly associated with delayed-onset muscle soreness?
What are some symptoms commonly associated with delayed-onset muscle soreness?
How do muscles attach at their origins and insertions?
How do muscles attach at their origins and insertions?
What is the primary tissue in the walls of hollow organs?
What is the primary tissue in the walls of hollow organs?
Which prefix means 'muscle'?
Which prefix means 'muscle'?
Which type of muscle tissue is responsible for maintaining posture and stabilizing joints?
Which type of muscle tissue is responsible for maintaining posture and stabilizing joints?
What is the term for the plasma membrane of muscle cells?
What is the term for the plasma membrane of muscle cells?
Which type of muscle tissue has a 'fusiform' appearance?
Which type of muscle tissue has a 'fusiform' appearance?
What is responsible for shortening muscle cells?
What is responsible for shortening muscle cells?
Which type of muscle tissue is involuntary in nature?
Which type of muscle tissue is involuntary in nature?
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