front 1 name the three types of muscles | back 1 smooth, cardiac, skeleton |
front 2 location of smooth muscle | back 2 skin, walls of hallow organs |
front 3 control of smooth muscle | back 3 involuntary |
front 4 branching of smooth muscle | back 4 no |
front 5 striations of smooth muscles | back 5 no |
front 6 intercalated discs in smooth nucleus | back 6 no |
front 7 nucleus location in smooth muscle | back 7 single and central |
front 8 cell shape in smooth muscle | back 8 spindle |
front 9 location of cardiac muscle | back 9 heart |
front 10 control of cardiac muscle | back 10 involuntary |
front 11 branching of cardiac muscle | back 11 yes |
front 12 striations in cardiac muscle | back 12 yes |
front 13 intercalated discs in cardiac muscle | back 13 yes |
front 14 nucleus location in cardiac muscle | back 14 single and usually central |
front 15 cell shape of cardiac muscle | back 15 branched cylinder |
front 16 location of skeleton muscle | back 16 attached to bones |
front 17 control of skeleton muscle | back 17 voluntary |
front 18 branching in skeleton muscle | back 18 no |
front 19 striations in skeleton muscle | back 19 yes |
front 20 intercalated disc in skeleton muscle | back 20 no |
front 21 nucleus location in skeleton muscle | back 21 multiple and peripheral |
front 22 shape of skeleton muscle | back 22 cylinder |
front 23 what does myo or sacro mean | back 23 muscles |
front 24 what are the special characteristics of muscles | back 24 excitability, contractibility, extensibility, elasticity |
front 25 what is excitability in a muscle | back 25 responsiveness to stimuli |
front 26 what is contractibility | back 26 able to shorten after stimuli |
front 27 what is extensibility | back 27 ability to extend or stretch |
front 28 what is elasticity | back 28 ability to recoil back in length after being stretched |
front 29 what is the function of muscles | back 29 produce movement, maintain posture and body position, stabilize joints, generate heat, protects the internal organs |
front 30 muscular tissue consists of | back 30 nerves, blood vessels, connect tissue sheath, muscles |
front 31 what connective tissue sheaths are in muscular tissues | back 31 epimysium, perimysium, endomysium |
front 32 what is epimysium | back 32 dense irregular connective tissue that surround the whole muscle |
front 33 what is perimysium | back 33 connective tissue that surround the muscle fascicle or muscle bundles |
front 34 what is endomysium | back 34 connective tissue that surrounds each individual muscle fiber |
front 35 the attachment of origin and insertion of muscle can be __________ or ____________. | back 35 direct or indirect |
front 36 what happens in direct attachment | back 36 the epimysium is fused direction to the periosteum or perichondrium |
front 37 what happens in indirect attachment | back 37 epimysium extends beyond the muscle either as a rope like tendon or sheet like aponeurosis, which is attached to the bone or surround muscle |
front 38 what is the cell membrane of the muscle cell called | back 38 sarcolemma |
front 39 what is the cytoplasma of the muscle cell called | back 39 sarcoplasm |
front 40 what is the diameter of a muscle cell | back 40 10-100 micrometer |
front 41 what is the length of a muscle cell | back 41 up to 30cm |
front 42 what does the sarcoplasma contain | back 42 glycosomes and myoglobin |
front 43 what are glycosomes | back 43 granules of stored glycogen that provide glucose during muscle cell activity |
front 44 what are myoglobin | back 44 red pigment that store oxygen |
front 45 each muscle cell contains thousands of rod like ________________ that run ___________ | back 45 myofibril, parallel to each other |
front 46 how much of the muscle fiber is myofibrils | back 46 80% |
front 47 what is the contractile unit of the muscle | back 47 sarcomere |
front 48 each sarcomere consists of | back 48 contractile protein |
front 49 a contractile protein consists of | back 49 myosin, actin, regulatory, a band, h zone, m line, I band, z line |
front 50 what is myosin | back 50 thick myofilament, has a tail and head |
front 51 what does the head of a myosin have | back 51 an ATP binding site and an actin binding site |
front 52 what is actin | back 52 thin myofilament, two actin protein strands twisted over each other |
front 53 what does the actin have | back 53 a myosin binding site |
front 54 what is tropomyosin | back 54 regulatory protein, when muscle is relaxed it does not allow the two binding sites to meet |
front 55 what is troponin | back 55 keep the tropmyosin in place when the muscle is relaxed |
front 56 location of a band | back 56 extends from one end of myosin to the other end of myosin |
front 57 location of h zone | back 57 part of sarcomere within the a band where there is only myosin |
front 58 location of m line | back 58 part of sarcomere within the a band in the center of the h zone which consists of the myosin myofilaments to each other |
front 59 location of I band | back 59 part of sarcomere where we see only actin myofilaments |
front 60 location of z line | back 60 part of sarcomere within the I band where adjacent actin myofilimanet are connected together |
front 61 where does a sarcomere extend to | back 61 from one z line to the other z line |
front 62 which lines do not change size | back 62 m, z, a |
front 63 sliding filament theory of muscle contraction | back 63 calcium comes into muscle cell. reposition of regulatory protein. actin binding sites of myosin bind to the myosin binding site of actin. uses energy from ATP and creates a rowing action preformed by myosin. |
front 64 the rowing action of myosin results in | back 64 h zone decrease. shortening of I bond, shortening of sarcomere, shortening of myofilament, shortening of muscle fiber, shortening of muscle bundle, shortening of muscle. |