The lateral border of the lung extends from the apex of the axilla down to which rib?

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Multiple Choice

The lateral border of the lung extends from the apex of the axilla down to which rib?

Explanation:
The lungs taper as they sit against the inner surface of the chest wall, so the lateral border along the midaxillary line marks how far the lung extends downward. In a typical situation, this border runs from the apex up near the root of the neck and arches downward to about the 8th rib at the midaxillary line. However, there is natural variation between individuals, and how deeply one inhales can shift the exact level. Because some people show the border around the 7th rib while others reach the 8th, describing the range as the 7th or 8th rib best captures the common variation.

The lungs taper as they sit against the inner surface of the chest wall, so the lateral border along the midaxillary line marks how far the lung extends downward. In a typical situation, this border runs from the apex up near the root of the neck and arches downward to about the 8th rib at the midaxillary line. However, there is natural variation between individuals, and how deeply one inhales can shift the exact level. Because some people show the border around the 7th rib while others reach the 8th, describing the range as the 7th or 8th rib best captures the common variation.

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