Because of its attachment sites, which muscles can extend the hip AND flex the knee joint?Gluteus maximusBiceps femorisGracilisRectus femoris e. SartoriusThe differences in muscle fiber types can be attributed to all of the following except:MetabolismMotor neuronRole of calcium during muscle contractionATPaseBlood supplyWhich of the following is NOT a characteristic commonly used to name skeletal muscles?SizeShapeNumber of originSites of originsThickness of fiberA Motor unit consist ofMultiple motor neurons and multiple muscle fibersA single motor neuron and the multiple muscle fibers it controlsMultiple motor neurons and the muscle fiber they controlOne neuromuscular junctionMuscle fiber typesWhich of the following does not attach to the scapula?Pectoralis MajorTrapeziusRhomboidsSerratus anteriorLevator scapulaeWhen the membrane is at resting potential. Which of the following is/are true?(1) voltage- gated Ca++ channels are closed(2) chemically- gated Ca++ channels are closed(3)Leak channels are closed(4) Na+/K+ pumps are inactivated1 only2 only3 only1 and 2 are true1,2 and 3 are trueThey're all trueAll of the following