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![Does the EMG represents the AP of the
muscle or the AP reached to the muscle by
the nerve ? *
O AP of the muscle
O AP of the nerve
O Both](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F48b7f7e0-58ed-4881-b590-7a163b4677ec%2F89c711ae-f441-44a2-94fb-972573bdf42b%2Frop2g6_processed.jpeg&w=3840&q=75)
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- Does the EMG represents the AP of the muscle or the AP reached to the muscle by the nerve ? * O AP of the muscle O AP of the nerve O BothThe disease poliomyelitis (po′le-o-mi′˘e-li′tis) destroys motor neurons, causingloss of muscle function and even flaccid paralysis. Some patients recoverbecause axon branches form from the remaining motor neurons. Thesebranches innervate the paralyzed muscle fibers to produce motor unitswith many more muscle fibers than usual. How does this reinnervation ofmuscle fibers affect the degree of muscle control in a person who hasrecovered from poliomyelitis?The EMG is a recording of: * The action potentials of the motor nerves supplying the muscle fibers. The action potentials of the innervated muscle fibers. The contractions of the innervated muscle fibers O The action potential of the pacemaker cells O The electrical activity in the sarcoplasmic reticulum
- 27. Which of the following seutences is NOI curreet? I Myotibroblast is a connective tissse cell that contuns propemes of sanooth muscle celle III Ounonin is the eall mevement of salts fomaegian af higher cancentration to a repion of lauer couccutrutsen darongh a pertially permcalble ueubnae IV. chrcuos uf circalating RBCa nE cuained in the sucleus v. Catctiol (acuve form of vataman D) elevates blood Ca" by actung ca atestne, kadaeys and stiulate osteoblant setivityWhat signal does the lIA afferent send? It signals the alpha motor neuron to contract the extrafusal muscle fibers O It signals the gamma motor neuron to cause contraction of the intrafusal muscle fibers O It signals to the muscle spindle to stop firing It signals to the alpha motor neurons to stop firing so the muscle can relaxif 2 clenches produce a reponse the excat same force of contration would the emg reoding also have to be the same response. Why or why not
- When doing experiments with isolated muscles, researchers stretch the muscle to different lengths before stimulating it. Which of these statements is TRUE about what happens to the muscle when they stretch it? Frest increases O The rise time increases O The latent period is shorter. O It enters tetanus at a lower stimulation frequencyInverse stretch reflex :-a- increases the possibility of avulsion of the excessively stretched muscle from its bony attachmentsb- has no reciprocal innervation circuitsc- is clinically manifested by lengthening reactiond- is clinically tested by examining the tendon jerksWhen a skeletal muscle is stimulated to contract, the force generated by the muscle can damage the tendon connected to the muscle. The sensory receptors in the tendons that are able to inhibit the muscle from generating excessive force are the: O gamma efferents O Golgi tendon organs O musele spindles O proprioceptors
- The discharge from Golgi tendon organs initiated by excessive stretch ofa skeletal muscle produces :-a- inhibition of α -motor neurons of antagonistic musclesb- inhibition of γ-motor neurons of antagonistic musclesc- inhibition of α -motor neurons of the same muscled- stimulation of γ-motor neurons of the same muscle5. Identify the structures in this diagram of a muscle fiber Describe the function of each structure. 8) 4 9) Modifed by C Seiwert from original by Shaleta madepn Original uploadr was.ermyempat enwkipediaruti werk Abduramanii2 tulk) - Skeital muscda.ont. Pubfic Damain httn/commans.wikimedortwhdechaPeurid-10M Number Name Function 1 3. 4 6. 7 8 00 000 00 2.If you step on a sharp object with your right foot O your right leg extensor muscle will contract O your left leg extensor muscle will relax O your right leg flexor muscle will be inhibited O your left leg flexor muscle will receive inhibitory inputs
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