Anatomy and Physiology

    Measurement, Errors, Data and Unit Conversion
    On a clinical thermometer where the smallest scale interval is 0.1 °C, a person’s temperature is measured to be 37.7 °C. Which of the listed temperatures could NOT be the person’s true temperature?
    An actual value of 37.76 °C would be seen on a scale that has 0.1 as its smallest interval, as 37.8. All other values are closer to 37.7 than they are to 37.8 or to 37.6.
    Author: rikazzz Comment
    Ionising Radiation
    Which of the following is the principal unit used when measuring the energy of ionising radiation?
    The electron volt, keV or MeV, is preferred than the joule as the energy of a photon is a tiny fraction of 1 J.
    Author: rikazzz Comment
    Skeleton and Joints
    Which of the following describes what an “epiphysis” is?
    The similar terms “epiphyseal plate” refers to the region between the diaphysis and the epiphysis where growth of a long bone takes place. The “epiphyseal line” replaces the plate in adults, when the long bone has ceased to grow.
    Author: rikazzz Comment
    Renal System
    What is renin?
    The JG cells produce renin which leads to angiotensin II being formed which will cause blood pressure to rise.
    Author: rikazzz Comment
    Chemistry for Physiology
    The chemical symbol for sodium is which of the following?
    Na is short for natrium which is the Latin name for sodium.
    Author: rikazzz Comment
    Reproductive System
    Spermatozoa are capacitated by mixing with the secretions of “peg” cells. Where are these cells located?
    Peg cells are non-ciliated epithelial cells within the fallopian tube. Their cellular secretions capacitate spermatozoa by removing glycoproteins and other molecules from their cell membranes.
    Author: rikazzz Comment
    Electricity
    What are the three wires connected to household “three pin plugs” on electrical cords called?
    Active (or live), neutral (or return) and earth.
    Author: rikazzz Comment
    Gastrointestinal System
    Which one of the listed molecule types is absorbed from the gut?
    All the other molecules are too large to be absorbed through the gut wall.
    Author: rikazzz Comment
    Measurement, Errors, Data and Unit Conversion
    Which of the following measurements is a semiquantitative one?
    The number of “+” signs indicates a level of magnitude that is semiquantitative, but there is no unit of magnitude. C is “qualitative”, while D is “nominal”.
    Author: rikazzz Comment
    Cardiovascular System
    If mean arterial pressure is kept constant while a small artery changes its radius from 1 to 2 mm, what will happen?
    If an artery dilates to twice its previous value, 16 times (24) as much blood will flow per minute.
    Author: rikazzz Comment