Chapter 11 - practice questions Most muscles cross at least one a) tendon b) joint c) bone d) ligament e) body plane Answer: b The attachment of a muscleÕs tendon to the stationary bone is called the _____; the attachment of the muscleÕs other tendon to the movable bone is called the _____. a) origin, action b) insertion, action c) origin, insertion d) insertion, origin Answer: c Motion will occur at a lever system when a) resistance at the insertion exceeds the load. b) the force of the contraction is not more than the load. c) effort at the origin exceeds the load. d) effort at the insertion exceeds the load. Answer: d Your friend nods ÓyesÓ to you, going through ßexion, extension and hyperextension. This movement at the fulcrum represents a a) Þrst- class lever system b) second- class lever system c) third-class lever system d) third-class lever system Answer: a Which fascicle arrangement, under voluntary or involuntary regulation of contraction, can control the opening or closing an oriÞce (opening)? a) pennate b) triangular c) circular d) parallel e) fusiform Answer: c The muscle that serves as the Òprime moverÓ during a movement is called the a) antagonist. b) agonist. c) synergist. d) asynergist. e) Þxator. Answer: b This type of muscle works by stabilizing the origin of the agonist so that it can act more efÞciently. a) synergist b) agonist c) antagonist d) Þxator e) secondary mover Answer: d When the knee is being ßexed, what is the fulcrum? a) femur b) weight of lower leg and foot c) knee joint d) tibia e) contraction of quadriceps femoris Answer: c During knee ßexion, what is the effort? a) knee joint b) contraction of hamstring muscle group c) weight of lower leg and foot d) femur e) tibia Answer: b Which of these muscles ßexes the thigh at the hip joint alone, but extends the knee working in a group? a) biceps femoris b) rectus femoris c) semitendinosus d) semimembranosus e) vastus lateralis Answer: b Which of these muscles has fascicles parallel to the midline? a) external obliques b) transverse abdominis c) rectus femoris d) biceps femoris e) orbicularis oculi Answer: c Which muscle in this Þgure can abduct, medially and laterally rotate, and extend the arm at the glenohumeral joint? a) C b) D c) F d) G e) I Answer: c Which muscle in this Þgure is innervated by the trigeminal nerve? a) A b) B c) G d) I e) E Answer: e Which muscle in this Þgure produces the effort when you plantar ßex to see over a taller person in front of your view?? a) C b) D c) G d) H e) I Answer: b Acting unilaterally, which muscle in this Þgure can rotate the vertebral column? a) D b) G c) H d) I e) E Answer: b Where is the orbicularis oculi? a) D b) E c) F d) G e) H Answer: a Where is the depressor anguli oris? a) K b) L Answer: b c) M d) N e) J Which muscle in this Þgure elevates the upper eye lid? a) B b) D c) E d) F e) G Answer: a Which of these muscles has an insertion on the occipital bone and temporal bone? a) A b) B Answer: b c) F d) G e) D