Obstructive sleep apnea occurs when
O A disruption in signals that regulate breathing, which are sent from the brain, cause periods of interrupted breathing.
An individual dreams she cannot breathe and wakes up in a panic.
An individual's airway becomes blocked during sleep.
O Signals sent from the brain that regulate breathing are blocked in the hypothalamus.

Which statement is true about common childhood infectious disease? a. children should always be given antibiotics to treat an infectious illness. b. frequency of infectious illnesses usually increases as children grow older. c. having a minor infectious illness weakens a child's immune system. d. infectious illnesses are usually mild and require no medication.

Employers are required to provide guardrail, safety net, or personal fall protection systems to protect workers from falling off unprotected sides/edges of residential roofs that are feet or more above a lower level.

If something is painful during exercise, what should you do? a. back off the exercise. b. modify the exercise. c. consult a physician if the pain persists. d. all of the above