Most respiratory system structures are conduits for airflow. Some of the structures have additional functions.  Match the respiratory organ with its function.

Contraction of respiratory muscles alter the volume of the thoracic cavity, leading to pressure changes within the alveoli. The result is inspiration.  Number in order the events that lead to inspiration, starting with nervous system input to respiratory muscles (#1).

Which of the following are considered non-respiratory air movements? (check all that apply)

What term refers to a mass of cells that act as a unit?

What is the name of the flap-like cartilage that covers the opening to the larynx during swallowing, preventing the entry of food into the layrnx, trachea, and lungs?

When carbon dioxide combines with water, the compound __________ is formed.

When do the semilunar valves open?

An overloaded subtraction operator subtracts two Shipment objects from each other, returning an integer that represents the difference in their totalWeight variables. The subtraction operator works as expected, with the object to the right of the minus sign being subtracted from the object to the left. The function header is int Shipment::operator-(Shipment ship). Within the function, which of the following is correct?

When overloading a binary operator as a member function, the function requires _____ parameter(s).

When overloading a binary operator as a friend function, the function requires _____ parameter(s).