The quickest reflex arcs involve only two neurons

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55.The quickest reflex arcs involve only two neurons, thus forming __ reflex arcs. A. IpsilateralB. ContralateralC. PolysynapticD. Monosynaptic 56.The flexor (withdrawal) reflex employs a ____, which maintains a sustained contraction. 57. If a bee sting on the right thigh causes a quick involuntary reaction of the right arm, this would be an example of
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58.The sensitivity of the muscle spindle is maintained by 59.The fibers that carry action potentials to cause skeletal muscle to contract are A. Gamma motor neurons.B.Anulospiral endings.C.Intrafusal fibers.D. Extrafusal fibers.E.alpha motor neurons 60.You go to the movies after a long day and you begin to nod off as soon as the movie starts. Your head starts to lower a little but this reflex causes your head to rise. This is called the_________. 61. The patellar tendon reflex arc, the patellar ligament is stretched, which stretches the quadriceps femoris muscle of the thigh. This reflex will cause the quadriceps femoris to ___________. 62. reflex where the sensory input and motor output are on opposite sides of thespinal cord is called a(n) __________ reflex arc.
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63. A tendon reflex ____________________. A. causes a muscle that is being stretched to contractB.makes the contralateral motor neurons contractC.makes the ipsilateral moto neurons relaxD. prevents overcontraction of a muscleE.causes tendon to contract 64. This reflex shows the least synaptic delay 65. Tendon organs are
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