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Veins carry blood __________ the heart resisting gravity via ____________?

Pressure and volume are inversely related and gases flow from high pressure to low pressure. Therefore, what must occur in order to breathe in atmospheric gases?

Control of ventilation is controlled by what segment of the brain?

In two sentences describe the adaptations in ventilation in response to exercise. That is, the adaptations in rate of ventilation to exercise over time. Not just that we breathe harder during exercise.

Tidal volume is the?

The atria and ventricles are separated via one way valves. The tricuspid valve separates the ________ atria and ventricle while the bicuspid valve separates the __________ atria and ventricle.

Most carbon dioxide produced during exercise is transported to the lungs via?

Briefly describe the pathway of electrical activity in the heart including each structure.

Regarding the structure of a neuron, what structures receive input or a signal from the axons of an adjacent cell?

When compared to a type 1 muscle fiber, type 2 x fibers have a higher mitochondrial and capillary density.