anatomy

1-How the respiratory area is protected when food or liquid is swallowed? What is the Heimlich maneuver?

2-Where are located the central chemoreceptors and the peripheral chemoreceptors for the breathing control process?

3-Please give the meanings of: tachypnea, bradypnea, apnea, tracheostomy, tracheotomy, and bronchoscopy.

4-What is the contribution of the Diaphragm for the Inspiration time of the respiratory cycle? How is its contraction?

5-What is Emphysema? Please name signs, symptoms, and etiology.