Question

In the respiratory pump process to increase venous return, inhalation results in a(n) ________ in the thoracic cavity, which causes the inferior vena cava and right atrium to expand and fill with blood.

Answer 1

Decrease in pressure

Step-by-step explanation:

In the respiratory pump process to increase venous return, inhalation results in a decrease in pressure in the thoracic cavity, which causes the inferior vena cava and right atrium to expand and fill with blood.