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- The A bands of a muscle shorten during contraction True False All of the following prefixes refer to muscle except: mys- sarco- myo- muro-Which among the four choices below is NOT a typically way to measure muscle strength? Maximum force that can be exerted during an isometric contraction Maximum load that can be lifted at once Peak torque during an isokinetic contraction Number of repetitions before muscle fatigue sets inPart C Which of the following does NOT describe treppe? It is also referred to as the "staircase" effect. An increase in stimulus intensity is required to see the effect. OAn incremental increase in force occurs. A period of relaxation can be seen on the muscle twitch tracing. Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Provide Feedback DE home end insert delete prt sc
- Before testing a true 1-RM exercise, why should you allow your client to complete 3 trial repetitions first? Select 2 correct answer(s) To reduce risk of injury To ensure form is correct To fatigue the muscles to a "normal" functional strength To focus on the eccentric and concentric portions of the movementWhich of the following are part of the muscle contraction process?(More than one answer may be correct, please aid in answering) Question 5 options: ATP binds and detaches myosin head from actin GTP is hydrolyzed to GDP + P Acetylcholine released into neuromuscular junction by motor neurons Prolactin stimulates the reuptake of ATP. Ca2+ binds to troponin which moves tropomyosin away from actinThe ________ opposes or resist, the action caused by the prime mover Antagonist Prime mover Agonist synergist Th ________of as muscle is the tendinous attachment on the bone that moves the least during contraction of the muscle Belly Insertion Origin architecture The _________of a muscle is the tendinous attachment on the bone that moves the most during contraction of the muscle Architecture Insertion Origin belly
- The term applied to the movement of lifting your body up onto you "tippy toes" is referred to as: Question 20 options: dorsiflexion pronation hyperextension plantar flexion Question 21 How can the force of an eccentric contraction be described? Question 21 options: the strongest type of contraction stronger than an isometric contraction, but weaker than a concentric contraction the weakest type of contraction stronger than a concentric contraction, but weaker than an isometric contractionThe size principle requires that the muscle fibers controlled by a single motor unit are all the same fiber type True FalseArrange the following in statements in the order that they occur during muscle contraction: 1-10 ACh leaves the synaptic knob and enters the synaptic cleft The action potential is carried deep into the muscle cell by T tubules The muscle cell relaxes and lengthens Myosin binds to and pulls on actin, resulting in muscle shortening Calcium attaches to troponin As calcium re-enters the sarcoplasmic reticulum, its concentration at the myofilaments decreases Calcium is released from the sarcoplasmic reticulum Tropomyosin rolls out of the way, exposing actin ACh diffuses across the synaptic cleft and attaches to protein receptors on the sarcolemma, resulting in muscle "excitation" Na+ enters the muscle cell and K+ exits, resulting in an action potential