Muscular System
Quiz by Ashley
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- Q 1/50Score 0The I band within a skeletal muscle fiber is indicated by ________.29Label CLabel BLabel ALabel D
50 questions
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- Q1The I band within a skeletal muscle fiber is indicated by ________.Label CLabel BLabel ALabel D30s
- Q2The H zone, located within the A band, lacks thin filaments and is represented by ________.Label DLabel ALabel CLabel B30s
- Q3The A band within a myofibril is indicated by ________.Label DLabel BLabel ALabel C30s
- Q4The myofilament composed of actin is indicated by ________.Label ALabel BLabel CLabel D30s
- Q5A fascicle is indicated by ________.Label DLabel ALabel BLabel C30s
- Q6The epimysium is represented by ________.Label DLabel BLabel CLabel A30s
- Q7The perimysium wraps a fascicle of muscle cells and is represented by ________.Label BLabel CLabel ALabel D30s
- Q8Striated involuntary muscle tissue is classified as ________ muscle.cardiaceither smooth or skeletalsmoothskeletal30s
- Q9Which term does NOT describe smooth muscle cells?skeletalinvoluntaryvisceralnonstriated30s
- Q10What organelle wraps and surrounds the myofibril and stores calcium?sarcomeresarcolemmacross bridgesarcoplasmic reticulum30s
- Q11Muscle tissue has the ability to shorten when adequately stimulated, a characteristic known as ________.elasticitycontractilityextensibilityirritability30s
- Q12One neuron and all the skeletal muscles it stimulates is known as a ________.sarcoplasmic reticulummotor unitneuromuscular junctionsynaptic cleft30s
- Q13The heads of the myosin myofilaments are called ________ when they link the thick and thin filaments together during skeletal muscle contraction.cross bridgessynapsesneuromuscular junctionsmotor units30s
- Q14According to the sliding filament theory, how does muscle contraction occur?Myosin heads form cross bridges and pull thin filaments, causing them to slide.Myosin heads attach and detach from thin filaments, causing thin filaments to shorten.Both thick and thin filaments shorten as the muscle contracts.A bands bunch up and shorten as myosin heads attach to thin filaments.30s
- Q15Contractions in which muscles shorten and produce movement are known as ________.isometric contractionstwitchesisotonic contractionsresistance exercises30s
