Anatomy and Physiology

    Respiratory System
    Air flows from a region of high pressure to a region of lower pressure. To explain the process of inhalation and exhalation, you need this fact and which other?
    Boyle’s law states that the pressure within an enclosed gas decreases as its volume increases. So by increasing the volume of your lungs, a low pressure is created which allows air to move into this region of lower pressure and vice versa.
    Author: rikazzz Comment
    Chemistry for Physiology
    Fructose is a simple sugar or carbohydrate. What is it an example of? A:
    Fructose is a simple sugar or monosaccharide – it cannot be converted to a simpler sugar by hydrolysis.
    Author: rikazzz Comment
    Measurement, Errors, Data and Unit Conversion
    By Internet search, you discover that 1 in. (1″) is the same as 2.54 cm. How would you convert a man’s waist girth (circumference) from 40″ to centimetres?
    You know that 1″ is the same as 2.54 cm, so ten of them would be 10 × 2.54 = 25.4 cm. Hence 40 of them would be 40 × 2.54 = 110.6 cm.
    Author: rikazzz Comment
    Chemistry for Physiology
    Which of the following is NOT an acid?
    Such a solution is a buffer.
    Author: rikazzz Comment
    Chemistry for Physiology
    Which of the following would happen when hydrochloric acid is added to water?
    HCl is a strong acid. Hence a high concentration of hydronium ions would be produced.
    Author: rikazzz Comment
    Chemistry for Physiology
    You have a bottle of a strong acid and you add 100 ml of this to 1 L of water. What would the pH of this final solution most likely be?
    Strong acid produces a high concentration of hydronium ions in aqueous solution, so the pH would be low.
    Author: rikazzz Comment
    Cardiovascular System
    Which of the following is most unlikely to increase blood viscosity?
    Leucocytosis is an increase in the number of WBC above the normal range. Such a rise would have a minimal effect on viscosity as viscosity is due largely to the number of the much more numerous RBC in normal blood.
    Author: rikazzz Comment
    Chemistry for Physiology
    In the condition known as acidosis, the blood pH would be:
    The healthy pH range for blood is 7.35–7.45. A pH value below this, while still alkaline, indicates insufficient alkalinity (or too much acidity) and is termed acidosis.
    Author: rikazzz Comment
    Skeleton and Joints
    To what does the term “osteon” refer in bone?
    These concentric cylinders surround a central canal (Haversian canal) and occur in compact bone.
    Author: rikazzz Comment
    Cardiovascular System
    Which of the following would increase arterial blood pressure?
    Increase in the rate of sympathetic impulses along vasomotor nerves would result in vasoconstriction which would increase BP. An increase in parasympathetic impulses would slow the heart rate, which would decrease BP.
    Author: rikazzz Comment