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- Match each numbered item with the most closely related lettereditem.1. perimysium2. sarcolemma3. I band4. aponeurosis5. sarcomere6. fast glycolytic fiber7. muscle tone8. antagonist9. circular muscle10. myosina. type of muscle fiber that fatigueseasilyb. muscle fiber plasma membranec. muscle whose function opposesagonistd. connective tissue covering a fasciclee. functional contractile unit of askeletal muscle fiberf. protein in thick filamentsg. sarcomere region with thinfilaments onlyh. muscle that surrounds an openingi. the resting tension within a musclej. muscle attachment that is a thin,flattened sheetReference Material: CH 5.5c, 10 and 11.2, Saladin A&P Textbook Lab Learning Outcomes: Upon completion of this lab, the student will be able to: Define: 1. 2. aponeurosis agonist (prime mover) antagonist synergist fixator fascia insertion isotonic contraction isometric contraction origin Describe the gross and microscopic anatomy of a muscle using the terms whole muscle, sarcomere, myofilament (actin and myosin), endomysium, perimysium, epimysium, sarcolemma, fascicle, muscle fiber, myofibril, and tendon appropriately. Identify these structures in an image.Fast-twitch muscle fibers are also called type ________fibers and slow-twitch are called type _____________fibers. A, B I, II II, I B, A
- Compare and contrast the connective tissue types of loose, cartilage, dense, bone, and blood. Explain, in detail, the process of a muscle contraction at a microscopic level (including the sliding filament model). Please make sure responses are in your own words as possible as you can. Thanks for the help.Identify the following: epimysium * perimysium * endomysium * muscle fascicle * muscle fiber Identify the following: origin * insertion * extensor * flexor A 1 3 1 2 4 5 4 Note: make some flashcards for studying the insertions, origins and actions! 3 Layers of connective tissueIV. Sequence of Events: Muscle Contraction See if you can place the events that occur during muscle contraction and relaxation in their proper order. Insert numbers in the spaces provided to order the events in the proper sequence. A. An electrical impulse travels over the sarcolemma and inward along the T tubules, causing sacs in the sarcoplasmic reticulum to release calciun. B. The release of ACh stops and acetylcholinesterase breaks down any remaining ACh. C. Troponin and tropomyosin prevent the myosin heads from grasping the thin filament, and the muscle fiber relaxes. D. An electrical impulse causes small vesicles at the end of a motor neuron to bind with the cell wall and release the neurotransmitter acetylcholine (ACh). E. Calcium binds with the troponin on the actin filament, exposing attachment points. F. ACh diffuses across the synaptic cleft, where it stimulates receptors in the sarcolemma. G. Calcium ions are pumped back into the sarcoplasmic reticulum. H. The myosin heads…
- Label the connective tissue of the muscle. Endomysium, Perimysium, Epimysium, Fascia3. a. In tabulated form, compare and contrast the 3 types of muscle tissues according to structure and location in the body. b. Relate their structural make-up to their functions in the body.Indicate if the following statement is true or false and then provide a justification for your answer: Although there are no sarcomeres, smooth muscle still possess thick and thin filaments. T/F + Justification
- 1. Compare the excitation-contraction coupling in the three types of muscle. Skeletal muscle Smooth muscle Cardiac muscle Sarcomere/myofibril Thick filament Thin filament Striations I tubules Sarcoplasmic reticulumpart 1. Sarcolemma - a delicate cell membrane of the muscle cell 2. Nucleus - a rounded structure beneath the sarcoplasm 3. Sarcoplasm - a cytoplasm enclosed by the sarcolemma 4. Cross-striation - heavily shaded thin bands and light bands across the cell OBSERVATIONS: 1. What is the shape of the skeletal muscle fibers? 2. Draw and label the parts of the skeletal muscle fibers.Part A Name the muscle tissue. Submit Previous Answers Request Answer F5 F6 F3 F4 F2 % C@ 4 T W IS LL