Podcast
Questions and Answers
Which type of exercise promotes change in oxidative muscle fibres by increasing the number of mitochondria and capillaries?
Which type of exercise promotes change in oxidative muscle fibres by increasing the number of mitochondria and capillaries?
- High intensity resistance exercise
- Short duration weightlifting
- Anaerobic exercise
- Endurance aerobic exercise (correct)
What is the term used to describe the increase in diameter of fast-glycolytic fibres due to an increase in the synthesis of actin and myosin?
What is the term used to describe the increase in diameter of fast-glycolytic fibres due to an increase in the synthesis of actin and myosin?
- Hyperplasia
- Atrophy
- Hypotrophy
- Hypertrophy (correct)
Which type of muscle shows dense bodies replacing Z lines and uses Calmodulin instead of troponin?
Which type of muscle shows dense bodies replacing Z lines and uses Calmodulin instead of troponin?
- Cardiac muscle
- Skeletal muscle
- Smooth muscle (correct)
- Striated muscle
What happens during disuse atrophy of muscles?
What happens during disuse atrophy of muscles?
Which type of smooth muscle forms sheets or bundles of tissue and is myogenic in nature?
Which type of smooth muscle forms sheets or bundles of tissue and is myogenic in nature?
During smooth muscle contraction, what is required for myosin to interact with actin?
During smooth muscle contraction, what is required for myosin to interact with actin?
What triggers the release of Ca2+ from the Sarcoplasmic reticulum in skeletal muscle?
What triggers the release of Ca2+ from the Sarcoplasmic reticulum in skeletal muscle?
What happens when Ca2+ ions bind to troponin on actin filaments during excitation-contraction coupling?
What happens when Ca2+ ions bind to troponin on actin filaments during excitation-contraction coupling?
In skeletal muscle, what is the role of myosin during contraction?
In skeletal muscle, what is the role of myosin during contraction?
Which event allows the physical movement of tropomyosin aside to expose binding sites on actin in skeletal muscle?
Which event allows the physical movement of tropomyosin aside to expose binding sites on actin in skeletal muscle?
What is the main function of troponin during muscle contraction?
What is the main function of troponin during muscle contraction?
What is the primary role of T-tubules in skeletal muscle contraction?
What is the primary role of T-tubules in skeletal muscle contraction?
What happens when a muscle fiber is restimulated before it has completely relaxed?
What happens when a muscle fiber is restimulated before it has completely relaxed?
What is the term for the maximal sustained contraction that occurs when a muscle fiber is stimulated so rapidly it does not relax between stimuli?
What is the term for the maximal sustained contraction that occurs when a muscle fiber is stimulated so rapidly it does not relax between stimuli?
Which factor leads to bigger muscles having more fibers per motor neuron?
Which factor leads to bigger muscles having more fibers per motor neuron?
What occurs when a muscle fiber is restimulated after it has completely relaxed?
What occurs when a muscle fiber is restimulated after it has completely relaxed?
What happens when more force is needed in whole-muscle contraction?
What happens when more force is needed in whole-muscle contraction?
