Anatomy and Physiology

    Cardiovascular System
    Which of the following would result in an increase in blood pressure?
    Sympathetic stimulation prepares the body for vigorous activity, and such stimulation that would result in an increase in HR would increase BP. Parasympathetic stimulation would do the reverse. An increase in GFR would filter more water from the blood, thereby decreasing its volume and BP.
    Author: rikazzz Comment
    Ionising Radiation
    X-rays for radiation therapy are produced by:
    A compact medical linear accelerator is used to produce high-energy x-rays for radiotherapy. The other choices all involve gamma ray producing radionuclides.
    Author: rikazzz Comment
    Cardiovascular System
    Vasoconstriction and vasodilation of blood vessels is facilitated by the:
    Contraction and relaxation of smooth muscle produces constriction and dilation of blood vessels. This is under the control of the sympathetic nervous system.
    Author: rikazzz Comment
    The Physics of Waves: Light Waves, Sound Waves and Ultrasound
    As the frequency of a sound in air is made to decrease, which of the following will happen?
    Frequency and period are inversely related, so as frequency decreases the period of the wave will increase.
    Author: rikazzz Comment
    Integument
    On which part of the integument is most of the body’s normal flora located?
    The normal flora (bacteria) is outside the body, residing on the surface of the epidermis.
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    Cardiovascular System
    What is the name of the artery that leaves the left ventricle?
    It is the aorta.
    Author: rikazzz Comment
    Body Temperature, Energy and Heat Loss
    A person is measured to have an oral (sublingual) temperature of 36.8, an axillary temperature of 36.5, forehead temperature (measured with infrared thermometer) of 37.1 and a tympanic temperature of 35.9 all in °C. Which is the correct temperature?
    A physiological variable like temperature varies depending on when, where and with what it is measured. All the temperature values are accurate measurements of the body site used. Just be sure that you measure the same site with the same instrument if you want to compare the value with a previously measured value.
    Author: rikazzz Comment
    Cardiovascular System
    The unit of pressure called the “pascal” (symbol Pa) is the name given to which of the following combination of units?
    Pressure units are derived from force and area units. Choices C and D are not combinations of units.
    Author: rikazzz Comment
    Cells and Tissues
    Which of the following is NOT an example of a cell?
    The suffix “-some” refers to an organelle within a cell. The other suffixes all indicate a type of cell.
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    Biomechanics
    Which statement is consistent with “good lifting technique”?
    This strategy will keep the load arms of the levers as short as possible. In addition adopt a wide base of support, bend your knees and use your leg muscles to lift.
    Author: rikazzz Comment