Which of the following describes a type of natural or synthetic drug that has properties that interfere with specific receptors in the brain that "turn off" pain in the body?

Unmyelinated sheaths are wrapped in ________

a. neurilemma b. myelin c. neurilemma and myelin d. cardiac tissue

If the patient in labor complains of the urge to push, you should:

A) transport immediately as delivery is imminent. B) cover the vaginal opening with a bulky dressing and transport. C) examine the vaginal area for crowning. D) position the patient in a left-lateral recumbent position.