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E) None of the above are correct.25. The types of receptor cells for color that are found in the human eyeincludeA) the yellow rods.B) the green cones.C) the red rods.D) Two of the above are correct.E) All of the above are correct.26. Blood within the pulmonary arteries travels next to theA) right atrium.B) lymphatic vessels near cisterna chyli.C) right ventricle.D) capillaries surrounding alveoli.E) Two of the above are correct.27. Approximately what proportion of the volume of blood consists of theerythrocytes?A) 1%B) 25%C) 45%3D) 55%E) 70%28. Tonsils are thought to be important parts of the immune response in thebody.A) TrueB) False29. Why is locking yourself in a garage with a running automobile anunfortunately effective methodto commit suicide?A) Because poisonous gasoline from the automobile will kill you as it leaksout of the tank.B) Because the products of combustion produce carbon dioxide.C) Hemoglobin will more tightly bind with CO than to either 0 or COD) Both a and b are correct.E) Both b and c are correct.30. Which scientist is most famous for his invention of the spygmanometer?A) Benjamin CummingsB) William EinthovenC) Étienne-Jules MareyD) Karl E. ShumwayE) None of the above are correct.31. Which statement best describes arteries?A) All carry oxygenated blood away from the heart.B) All carry oxygenated blood.C) All contain valves to prevent the back-flow of blood.D) Two of the above are descriptive of arteries.E) None of the above are correct.32. Steroid hormones exert their action byA) finding an appropriate cell receptor and initiating cAMP activity.B) acting on the nucleus of a cell and initiating or altering the expressionof a gene.