GastropodaCephalopodaBivalviaChoose the best answer.

What vessels receive the excess extracellular fluid from the interstitial spaces and return it to circulation via the superior vena cava?           Obj 20.3

Which of the following is NOT a surface barrier serving as the first line of defense?     Obj 20.6

What are the sites of gas exchange in the lungs?      Obj 21.1

What is the chloride shift and why does it occur?      Obj 21.17

What chemical is a potent pro-inflammatory cytokine that enhances inflammation, induces fever via the hypothalamus, activates phagocytes, and can trigger programmed cell death (apoptosis)? Obj 20.10

Activated B cells differentiate into ________ and secrete _________.           Obj 20.21

What is the measure of the lung’s ability to expand (distend) in response to a change in pulmonary pressures?         Obj 21.12

Predict what happens to air movement when atmospheric pressure is 760 mm Hg, intrapulmonary pressure is 758 mm Hg, and intrapleural pressure is 754 mm Hg.           Obj 21.11

What statement best describes the function of pyrogens?   Obj 20.13