Anatomy and Physiology

    Cardiovascular System
    The role of platelets in blood clotting includes all of the following EXCEPT one. Which one?
    Prothrombinase is the enzyme that converts prothrombin to thrombin (it does not come from platelets).
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    Cells and Tissues
    Active transport across the plasma membrane may be described by which statement?
    This is the only correct answer. The others are not true.
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    Respiratory System
    Henry’s law relates the amount of gas that will dissolve in a liquid to the partial pressure of the gas in contact with the liquid. In which situation would the greatest amount of oxygen dissolve in the liquid lining the alveoli?
    The pp of oxygen in the situations described by choices B, A, D and C are 0.7X, 1.5X, 2X and 3X, respectively, the pp of oxygen at one atmosphere pressure. Hence, choice C would result in the greatest amount of oxygen dissolving in liquid.
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    Cardiovascular System
    Which of the following events occur during late ventricular diastole?
    Choice A describes early diastole. Towards the end of diastole, the atria contract to push any blood they contain into the ventricles.
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    Chemistry for Physiology
    If a sample of blood has a pH of 7.25, which of the following is true?
    pH above 7.0 indicates basic. 7.25 is below the healthy range.
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    Endocrine System
    Complete the sentence correctly. Parathyroid hormone:
    When the level of calcium in the blood is lower than required, PTH is released and causes the calcium concentration to increase.
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    Chemistry for Physiology
    Which of the following refers to a carbohydrate?
    A disaccharide is a sugar (hence a carbohydrate) that can be simplified into simpler sugars.
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    Chemistry for Physiology
    Of the four different types of matter listed below, which is not an example of an element?
    Water is a compound of H and O.
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    Reproductive System
    From which source does the majority of the volume of a male ejaculation come?
    The seminal vesicles provide about 60% of ejaculate volume.
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    Chemistry for Physiology
    Choose the solution below that has the lowest concentration of dissolved particles.
    Choices A, B and C are all isotonic solutions. “Hypo-” refers to a solution concentration that is less than that of human blood.
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