16) 16) Which of the following disease states results from loss of surface area (one of the constants" in diffusion and

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16 16 Which Of The Following Disease States Results From Loss Of Surface Area One Of The Constants In Diffusion And 1 (57.31 KiB) Viewed 48 times

16) 16) Which of the following disease states results from loss of surface area (one of the constants" in diffusion and gas exchange) in the alveoll? A) pulmonary edema B) asthma C) fibrotic lung disease D) emphysema 17) Which of the following conditions would be a local paracrine signal for systernic vasoditation? A) decreased H+ B) decreased CO2 b) increased K+ D) Increased 02 17) 18) 19) 18) What does the L-type membrane protein do in cardiac contractile cells? A) maintains the action potential stimulates release of Ca** from SR: allows Nat to enter from ECF B) maintains the action potential; allows Cat* to enter from ECF stimulates return of Cat to SR C) allows Cat+ to enter from ECF; target of the action potential stimulates release of Cat+ from SR D) allows Nat to enter from ECF: target of the action potential stimulates return of Cat* to SR 19) Signals arrive at pre-ganglionic neurons of the autonomic division from three areas of the CNS. These involuntary areas are what direct the activities of both branches of the ANS. Which of the following is NOT an area of the CNS providing signals to the autonomic division neurons? A) thalamus B) medulla oblongata C) pons D) hypothalamus 20) What is the best description of pulmonary blood flow? A) high flow, high pressure B) low flow, low pressure C) high flow, low pressure D) low flow, high pressure 20) ) 21) 21) As autorhythmic cells of the SA node depolarize, which cell(9) receive the direct transfer of the electrical signals? Choose all that apply A) autorhythmic cells in the AV node B) conducting fibers of the internodal pathway C) contractile fibers of the atria D) contractile fibers of the ventricles E) conducting fibers of the bundle branches F) Purkinje fibers 22) - 22) Which of the following lymphocytes directly attacks cells infected by viruses? A) helper T cells (Tn cells) B) B cells C) plasma cells D) cytotoxic T cells (Tc cells)