vshelton8167 vshelton8167

23-01-2024
Health

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The respiratory pump assists blood movement within the veins of the trunk because as a person inspires, ________.
1) the diaphragm contracts and moves downward
2) the intercostal muscles contract and move the ribcage upward and outward
3) the pressure in the thoracic cavity decreases
4) the pressure in the abdominal cavity increases

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