Your answer: c. will always be the dominant value contributing to the total force of the muscle. Correct answer: b. will utilize ATP hydrolysis to drive the cross bridge cycle. 4. Which if the following is not depicted in a typical skeletal muscle isometric length-tension curve? You correctly answered: a. time 5. Maximal active tension will be produced in a skeletal muscle fiber when Your
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of muscle tension development in a muscle fiber? Your answer : d. the recess period Correct answer: c. the latent period What occurs during the latent period of these isometric contractions? Your answer : a. The length of the muscle fiber is sliding into an optimal length. Correct answer: b. All the steps of excitation-contraction coupling occur. Experiment Data: Voltage 0.0 3.0 4.0 6.0 8.0 10.0 Length 75 75 75 75 75 75 Active Force 0.00 1.04 1.32 1.65 1.81 1.82 Passive Force 0.00 0.00 0.00 0.00
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involuntary type of muscle and is continuously working within the walls of the heart. This muscle does not tire quickly and each contraction along with a relaxation can be called a heartbeat. Skeletal Muscle Skeletal muscle is a type of striated muscle‚ usually attached to the skeleton. Skeletal muscles are used to create movement‚ by applying force to bones and joints; via contraction. (http://en.wikipedia.org/wiki/Skeletal_muscle) Unlike cardiac muscle‚ skeletal muscle is voluntary and can sometimes
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BALTIMORE CITY COMMUNITY COLLEGE Baltimore‚ MD 21215 ________________________________________________________________ ________________________________________________________________________________________________________________ COURSE SYLLABUS __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Note
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elapses between the generation of an action potential and the start of muscle tension development in a muscle fiber? You correctly answered: c. the latent period What occurs during the latent period of these isometric contractions? You correctly answered: b. All the steps of excitation-contraction coupling occur. Experiment Data: Voltage 0.0 3.0 4.0 6.0 8.0 10.0 Length 75 75 75 75 75 75 Active Force 0.00 1.04 1.32 1.65 1.81 1.82 Passive Force 0.00 0.00 0.00 0.00 0.00 0.00 Total Force 0.00 1.04 1.32
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Textbook: Neural Reflexes * all neural reflexes begin with stimulus that activates sensory receptor * receptor sends info in form of AP through sensory neurons to CNS * CNS: integrating center that evaluates all incoming info and selects appropriate response * Initiates AP in efferent neurons to direct response of muscles or glands (effectors) * Negative feedback: * Feedback signals from muscle or joint receptors keep CNS continuously informed of changing body position
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elapses between the generation of an action potential and the start of muscle tension development in a muscle fiber? You correctly answered: c. the latent period What occurs during the latent period of these isometric contractions? You correctly answered: b. All the steps of excitation-contraction coupling occur. Experiment Data: Voltage 0.0 3.0 4.0 6.0 8.0 10.0 Length 75 75 75 75 75 75 Active Force 0.00 1.04 1.32 1.65 1.81 1.82 Passive Force 0.00 0.00 0.00 0.00 0.00 0.00 Total Force 0.00 1.04 1.32
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Strength: a) dynamic. b) static. a) Dynamic: is also calld isotonic bcoz its relatd 2 movts. In push ups n pull ups we reqire dem. # maximum strength- ability 2 act against max. resistance. Eg: weightlifting‚ long jump n high jump. # explosive- the ability 2 overcome resistance with high speed. # strength endurance- the ability 2 overcome resistance n act against resistance under conditions of fatigue. b) Static: is also isometric. It is the ability to act aginst resistance. 2. Speed-ability
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Chapter 20: The Knee and Related Structures © 2011 McGraw-Hill Higher Education. All rights • Complex joint that endures great amounts of trauma due to extreme amounts of stress that are regularly applied • Hinge joint w/ a rotational component • Stability is due primarily to ligaments‚ joint capsule and muscles surrounding the joint • Designed for stability w/ weight bearing and mobility in locomotion © 2011 McGraw-Hill Higher Education. All rights Figure 20-1 © 2011 McGraw-Hill Higher Education
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fatigue protocol to study the effects of Kinesio Tape. This study was conducted by Yeung et al. (2014) and showed no significant difference in muscle strength when applying the facilitating technique of KT on the knee extensors before and after an isometric fatigue protocol. They reported that applying the facilitation technique to the vastus medialis oblique muscle VMO only did not improve the peak torque or the EMG activity during the knee extension. Yet‚ in their conclusion they reported that KT
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