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Label the following parts of a spinal cord on the cross- section diagram. a white matter b. grey matter c. donat root ganglion d. nerve fibers e interneuron t synapse g sensory neuron h. motor neuron K Reflex Act Label the following parts of a reflex act on the diagram of a boy stepping on a tack and jerking his leg away. a. sensory neuron b. motor neuron C. stimulus d. spinal cord e. receptor (in skin) f. effector (muscle) Fill in the blanks with the correct answers. Suppose you stepped on a tack. You jerked your leg away from the aware of what happened. The impulse traveled from the to a(n) neuron. then across another synapse to a The impulse traveled along this nerve to an muscle in your leg. You jerked your leg away. you were in the skin, along a[n) e