all T-Mobile 8:31 PM 67% Done 5 of 7 28) Pactors that influence the stability of

Question

all T-Mobile 8:31 PM 67% Done 5 of 7 28) Pactors that influence the stability of a synovial joint inclade C) tone of surrounding muscles D) all of these 29) A sutare joining the Bat bones of the cranium are ossified A) shape of articular surfaces B) presence of strong reinforcing ligaments joints A) fibrous B) cartilaginous C) synovial 30) The conmective tissue covering that encloses the sarcolemma of an individual muscle fiber is D) periosteum A) epimysium B) perimysium C) endomysium 31) Striations seen in skeletal muscle fibers are duc to the arrangement, in the tibers, of A) sodium and potassium B) troponin and tropomyosin synaptic vesicles D) actin and myosis 32) Myoglobin has a special function in muscle tissue. It A) breaks downglycogen B) is a contractile protein C) holds a reserve supply of oxygen in the muscle D) It produces ATP under anacrobic conditions 33) The major function of the sarcoplasmic reticulum in muscle contraction is A) make and store creatine phosphate B) synthesize actin and myosin myolilaments C) regulate intercellular calcium concentration D) peovide a source of myosin for the contraction peocess 34) Rigor mortis occurs because: A) bacteria begin to decay muscle tissue molecules B) no ATP is available to release attached actin and myosin C) proteims are beginning to break down D) sodium ions leak out of the mescle 35) Using your fingers to take notes would require movement controlled by A) many motor units with few muscle fibers per unit B) many motor units with many muscle fibers per unit C) few motor units with many muscle fibers per unit D) few motor units and few muscle fibers per unit 36) During a deep knee bend the sequence of muscle contractions in the quadriceps for the following segence of movements: flex knce bold squat-extend knee would be A) isometric isometric, then concentric eccentric B) eccentric concentric isometric, then concentric C) eccentric -isometric -isometric, then concentric

Explanation / Answer

28. C All of these.

29. A These joints are called synarthroses. These are fibrous in nature.

30. C

31. D

32 .c

33.C

34.B

35.B

36.C

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