Final answer:
Inspiratory flows, related to inhalation, are generally graphed below the baseline in spirometry, indicating the inflow of air into the lungs. Inspiratory capacity denotes the maximal amount of air that can be inhaled after a regular exhalation. Differences in pressure between the atmosphere and lungs drive these flows.
Step-by-step explanation:
Inspiratory flows, associated with the process of inspiration (or inhalation), represent the movement of air entering the lungs. Graphically, these flows in spirometry are typically presented below the baseline, as they indicate the intake of air, in contrast to expiratory flows which occur above the baseline and denote outflow of air from the lungs.
Inspiratory capacity (IC) is the sum of the tidal volume and the inspiratory reserve volume, representing the maximum volume of air that can be inhaled after a normal exhalation. Flows are dependent on the differences in pressure between the atmosphere and the lungs. When you inhale, the pressure drops to below atmospheric pressure, causing air to flow into the lungs.
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