Podcast
Questions and Answers
What is the name of the membrane of skeletal muscles?
What is the name of the membrane of skeletal muscles?
- Epimysium
- Endomysium
- Sarcolemma (correct)
- Perimysium
What protein filaments are responsible for muscle contraction?
What protein filaments are responsible for muscle contraction?
- Keratin and Collagen
- Fibrin and Tropomyosin
- Elactin and Fibronectin
- Actin and Myosin (correct)
What is the purpose of T-Tubules in skeletal muscle cells?
What is the purpose of T-Tubules in skeletal muscle cells?
- To store calcium ions
- To provide structural support to the cell
- To conduct impulses for muscle contraction (correct)
- To transport materials within the cell
Which component is responsible for the storage of calcium ions in muscle cells?
Which component is responsible for the storage of calcium ions in muscle cells?
What is the smallest functional unit of muscle fibers?
What is the smallest functional unit of muscle fibers?
Which proteins interact during muscular contraction within the myofibrils?
Which proteins interact during muscular contraction within the myofibrils?
What principle states that all muscle fibers in a motor unit contract together when stimulated?
What principle states that all muscle fibers in a motor unit contract together when stimulated?
What is the main difference between hypertrophy and atrophy in muscles?
What is the main difference between hypertrophy and atrophy in muscles?
Which type of muscle fiber is characterized by a smaller diameter, many more mitochondria, and long sustained contractions?
Which type of muscle fiber is characterized by a smaller diameter, many more mitochondria, and long sustained contractions?
What is the primary reason why the majority of skeletal muscles are fast (white) fibers?
What is the primary reason why the majority of skeletal muscles are fast (white) fibers?
What is the function of mitochondria in muscle fibers?
What is the function of mitochondria in muscle fibers?
Which principle describes the recruitment of motor units from smallest to largest as force increases?
Which principle describes the recruitment of motor units from smallest to largest as force increases?
What covers the active site preventing Actin-Myosin interaction?
What covers the active site preventing Actin-Myosin interaction?
What holds tropomyosin in place and must move to initiate contraction?
What holds tropomyosin in place and must move to initiate contraction?
Which proteins form cross-bridges when interacting with thin filaments during contraction?
Which proteins form cross-bridges when interacting with thin filaments during contraction?
What is the term for the change in size of the sarcomere during muscle contraction?
What is the term for the change in size of the sarcomere during muscle contraction?
What term is used to describe a single motor neuron and all the muscle fibers it controls?
What term is used to describe a single motor neuron and all the muscle fibers it controls?
What determines the force generated during skeletal muscle contraction?
What determines the force generated during skeletal muscle contraction?
