Anatomy and Physiology

    Organisation of the Body
    Which of the listed terms is described by: “All the chemical processes that take place in the organelles and cytoplasm the cells of the body”?
    The quoted statement is a definition of metabolism.
    Author: rikazzz Comment
    Reproductive System
    Which statement is true?
    Female babies are born with all of their primordial follicles (about two million) paused at the prophase stage of meiosis I. Males are XY and females are XX, not the reverse.
    Author: rikazzz Comment
    Renal System
    The influence (or influences) that drives blood filtration in the kidney is:
    Filtration occurs because of a pressure difference. Osmotic pressure does not drive the process.
    Author: rikazzz Comment
    Nervous System
    As part of the normal ageing process, our eyes deteriorate because:
    The lens needs to be elastic in order to become thin (to view distant objects) and to become thick (to view objects that are within 1 m).
    Author: rikazzz Comment
    Organisation of the Body
    Which region of the body is known as the acromial region?
    The superior part of the shoulder at the distal end of the clavicle is known as acromial. Here the acromion of the scapula articulates with the clavicle at the “ac” or acromioclavicular joint. Choice A is the olecranal region; B the calcaneal; C (the medial malleolus) is not usually ascribed a region name.
    Author: rikazzz Comment
    Cardiovascular System
    One of the following does NOT contribute to peripheral resistance. Which one?
    Heart rate contributes to cardiac output but not peripheral resistance.
    Author: rikazzz Comment
    Nervous System
    When you rise in altitude rapidly, why do your internal ears feel uncomfortable until they “pop”?
    Atmospheric air pressure decreases as altitude increases. The air trapped in the middle ear remains at atmospheric pressure if we rapidly gain altitude, so this trapped air volume in the middle ear expands (Boyle’s law). This causes the ear drum to be uncomfortably deformed outwards. When the Eustachian tube (which is normally squashed flat) opens to allow some air to escape from the middle ear compartment, comfort is restored.
    Author: rikazzz Comment
    Skeleton and Joints
    On which bone is the greater trochanter found?
    Only the femur has a structure named “trochanter”.
    Author: rikazzz Comment
    Ionising Radiation
    When inspecting an x-ray image, the order of densities from blackest to whitest is:
    The blackest part on an x-ray image is air, while the whitest is the bone.
    Author: rikazzz Comment
    Nervous System
    Which of the following CAN cross the blood-brain barrier to enter the brain?
    All cells require oxygen, so of course it can cross the BBB most pharmaceuticals cannot.
    Author: rikazzz Comment