Which of the following is NOT true of an eccentric contraction? Contraction produces a greater force than a concentric contraction. Contraction is used as an acceleration activity. Muscle attachments move farther apart. Movement occurs with gravity.
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- A football player throwing the football is using more fast twitch muscle fibers. True FalseDuring a Physical Education class, you ask your students to perform a standing vertical jump. Identify the type of muscle contraction involved in the jump and describe the movement patterns of the concentric and eccentric phases. Outline the agonists, antagonists and synergist muscles, which contribute to maximum jump height. Identify the major lower body joints and joint movements, which contribute to the concentric phase of the jump.Holding a cell phone with constant tension is considered an isometric contraction. True False
- A bicep curl exercise with dumbbells is an example of flexion of the elbow joint. What would be an antagonistic muscle action to this exercise?Regarding lines of pull, which of the following is not considered: A muscles relative length and ability to generate force The plane of motion through which a joint is capable of moving Relative relaxation or contraction of surrounding muscles All the above are considered None of the above are consideredMatch the word in the word box with the following definition A muscle gets longer during this type of contraction Concentric Contraction Cool Down Cycle Dynamic Eccentric Contraction Isokinetic Contraction Isometric Contraction Isotonic Contraction Overload Periodization Phase Specificity Static Warm-up
- What event occurs immediately before the movement of tropomyosin? Initiation of the power stroke Cross bridge formation Active sites on actin are revealed Release of calcium from terminal cisternae Troponin changes shapeThe amount of resistance overcome in proportion to the amount of effort expended is known as: an eccentric contraction. an isometric contraction. the mechanical advantage of a muscle. the physiological advantage of a muscle.In a resting (non-contracting) muscle, what is the position of myosin? It is attached to the tropomyosin. It is in the high-energy, cocked position. It is attached to the actin. It is in the low-energy, bent position.
- The region of the muscle fiber involved in a neuromuscular junction is called the: Group of answer choices Voltage-gated ion channels Synaptic end bulb Synaptic cleft Motor end plate Synaptic vesicleDue to fiber alignment, the quadriceps muscle group is better at producing increased force, not velocity. True FalseDiscuss the functions of the different types of levers found in our body. How do these different types of levers make our body more useful. Explain each type of lever, the position of the fulcrum, load, and applied force and give an example of each.