Anatomy and Physiology

    Chemistry for Physiology
    An acid may be defined by which one of the following statements?
    This is a definition of an acid.
    Author: rikazzz Comment
    Body Temperature, Energy and Heat Loss
    Which one of the following statements does NOT accurately describe energy?
    Energy can be neither created nor destroyed.
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    Muscles
    The part of a skeletal muscle cell that is able to contract is called
    Sarcomeres contain myofilaments that slide past each other as the sarcomere contracts.
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    Renal System
    Which of the following chemicals is produced by the kidney?
    Carbon dioxide and water react to form carbonic acid which dissociates into hydronium ions and bicarbonate ions. The bicarbonate ions are transported to the blood, while the hydronium is excreted in acidic urine.
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    Cardiovascular System
    Which type of white blood cell is responsible for engulfing pathogens during phagocytosis?
    Neutrophils are microphages – phagocytes of bacteria. Thrombocytes and erythrocytes are not WBC.
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    Chemistry for Physiology
    Many drugs are neutralised to form salts and administered in this form. What is the main advantage of administering the salt form of the drug? It is usually:
    Salts, having particles that are electrically charged, are more likely to be soluble in water.
    Author: rikazzz Comment
    Gastrointestinal System
    What stomach enzyme digests protein to polypeptides?
    Pepsin is the only enzyme in the list.
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    Ionising Radiation
    Which of the following absorbed radiation dose equivalents would cause the most harm to your body?
    This dose given acutely to the entire body will probably be lethal. Higher doses can be withstood if only a limited part of the body is exposed or if the dose is accumulated over a long time.
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    Nervous System
    Which glial cells are responsible for forming the myelin sheath around peripheral nerve cells?
    The oligodendrocytes perform a similar function for neurones within the CNS.
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    Nervous System
    What fills the posterior chamber of the eye?
    The vitreous humour (or body) fills the space between the lens and the retina. It is transparent and gel-like, being about twice as viscous as water at 37 °C. “Humour” is an ancient Latin term for liquid or juice from a plant or animal. Aqueous humour fills the eye’s anterior chamber.
    Author: rikazzz Comment