Anatomy and Physiology

    Integument
    Which of the following is NOT a sensory receptor of the skin?
    This is a type of sudoriferous (sweat) gland.
    Author: rikazzz Comment
    Cardiovascular System
    Which of the following is the best definition of hypertension?
    Hypertension refers to a resting BP of more than 140/90. Choice A is correct except that there is no reference to being “at rest”.
    Author: rikazzz Comment
    Cells and Tissues
    One of the functions of integral proteins in cell membranes is to:
    Some proteins form channels which allow molecules and ions to enter the cell.
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    Reproductive System
    What is the function of luteinising hormone?
    Luteinising hormone targets the interstitial cells of the testes inducing them to secrete testosterone. (In women a surge in LH triggers the completion of meiosis I, ovulation and the formation of corpus luteum.)
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    Endocrine System
    Why are the receptors for amino acid-based hormones on the outside surface of the cell membrane?
    Amino acid-based hormones are not lipid soluble.
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    Muscles
    To what does the term “endomysium” refer?
    Endomysium is the connective tissue that surrounds a muscle cell (a fibre). Perimysium surrounds a muscle fascicle, while epimysium surrounds the whole muscle. The other choices are wrong.
    Author: rikazzz Comment
    Endocrine System
    From which organ is aldosterone released?
    Aldosterone is a “mineralocorticoid” hormone which gives a clue that it comes from the cortex of the adrenal glands.
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    Cardiovascular System
    Which of the following is a difference between arteries and veins?
    The walls of arteries are thicker than the walls of veins due to arteries having more smooth muscle and elastic tissue.
    Author: rikazzz Comment
    Chemistry for Physiology
    The definition of an acid is a substance that reacts:
    This is the best answer. Choice A is true of a strong acid only. Choice C is incorrect as the salt produced may also be basic or acidic.
    Author: rikazzz Comment
    Cardiovascular System
    What substance is produced by the first step in the blood clotting (coagulation) process?
    Prothrombinase is made from factor X. It then acts on prothrombin to form thrombin.
    Author: rikazzz Comment