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The right lung has _________ lobes and the left lung has __________ lobes.

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

The cardiac conduction system produces and distributes the signals that cause myocardial contractions. Write in order the components of the cardiac conduction system in the order that an electrical impulse would travel.   Start with the pacemaker and end with ventricular myocardium.

When do the semilunar valves open?

Match the correct ECG event to the imagine below

The flow of blood through the heart is unidirectional (one-way), passing by/through multiple chambers, vessels, and valves. Write in order the structures through which oxygen-poor blood would flow through the heart, beginning with the vena cavae and ending with the lungs.

Where is the ventral respiratory group located?

The heart supplies blood to itself via

Name the innermost layer of an artery wall.

This epithelium, located in the respiratory tract, is equipped with __________ on its free surface.