Match the following regarding muscle contractions: The final chemical messenger and "trigger" for muscle contraction. It binds to troponin A neurotransmitter released at motor end plates by the axon terminals It diffuses across the cell membrane resulting in depolarization Activates synaptic vesicles in axon terminals to fuse with plasma membrane of axon terminal Used to convert ADP to ATP by transfer of a high-energy phosphate group. A reserve high-energy compound Breaks down ACh into its building blocks, rendering it ineffective [Choose] [Choose] [Choose] [Choose] [Choose] [Choose ]

Match the following regarding muscle contractions: The final chemical messenger and "trigger" for muscle contraction. It binds to troponin A neurotransmitter released at motor end plates by the axon terminals It diffuses across the cell membrane resulting in depolarization Activates synaptic vesicles in axon terminals to fuse with plasma membrane of axon terminal Used to convert ADP to ATP by transfer of a high-energy phosphate group. A reserve high-energy compound Breaks down ACh into its building blocks, rendering it ineffective [Choose] [Choose] [Choose] [Choose] [Choose] [Choose ]

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Similar questions

If Ca2+ pumps of the sarcoplasmic reticula fail to function, what will happen to the tension generated in a single muscle fiber when it is excited? increase in tension decrease in tension no change in tension
Identify the ways that increased IP3 can cause contraction. Identify the ways that increased cAMP production can cause relaxation.
The following is an oscilloscope tracing displaying the muscle twitch of an intact, viable frog skeletal muscle. The muscle was stimulated via electrodes placed on the muscle at time zero and again at 75 msec. Which of the following physiological phenomena does this demonstrate? Force 0 20 treppe fatigue fused tetanus wave summation 120 Time (msec) 2015 a 180 200
Classify characteristics of skeletal muscle energy metabolism by dragging each statement to its correct metabolic pathway for ATP synthesis. Allows time for the other two pathways to increase their ATP production Reaction is catalyzed by creatine kinase Blood glucose and fatty acids become fuel for this pathway after 10 minutes of exercise Lactic acid is a waste product produced by this pathway Rapid means of forming ATP during the first few seconds of muscle contraction Very rapid, requiring only a single enzymatic reaction Produces ATP used during moderate, prolonged levels of muscular activity This pathway requires oxygen Produces a significant fraction of ATP during high-intensity Produces ATP from glucose quickly in the absence of охудen Uses glycogen broken down into glucose during the first 5-10 minutes of moderate exercise Produces only small quantities of ATP for each metabolized glucose molecule exercise Oxidative Phosphorylation Creatine Phosphate Glycolysis Reset
In the process of muscle contraction, which of the following steps requires hydrolysis of ATP to complete? movement of myosin head, pulling the thin filament binding of myosin head to active site on actin resetting of the myosin head back to its ready position letting go of myosin head from the active site on actin sliding of tropomyosin causing exposure of actin
Which of the following is thought to be cause of muscular fatigue? Decrease level of lactate within the muscle cell Decrease level of extracellular potassium outside of muscle cell Increased level of acetylcholinesterase in the synaptic cleft Increase level of intracellular ATP within muscle cell Increase level of phosphate within muscle cell
Explain the requirements for Ca2+ and ATP in muscle contraction and relaxation. Remember that myofibers are cells and have cellular metabolic requirements as well.
When utilizing microprocessor technology for testing muscle strength, you are typically looking at what form of muscle contraction? Concentric Isokinetic Isometric Eccentric
Describe the Neural excitation of the muscle and Describe how a signal arriving at the axon terminal results in calcium being released from the Sarcoplasmic reticulum
Match the following types of contractions: The stimulus above which no stronger contraction can be elicited, because all motor units are firing in the muscle Determined by alternating motor units of a muscle organ even when the muscle is at rest Continued sustained smooth contraction due to rapid stimulation The situation in which contractions become stronger due to stimulation before complete relaxation occurs How a smooth increase in muscle force is produced [Choose] [Choose ] [Choose] [Choose] [Choose]
Ca2+ does not play a role in muscle relaxation true or false
Describe and explain the sliding filament model of contraction. Be sure to include in your response a comparison between a relaxed and contracted sarcomere of a muscle fiber.