Anatomy and Physiology

    Cardiovascular System
    A person’s blood group is determined by:
    Antigens are on the surface of RBC. Antibodies (=agglutinins) circulate in the bloodstream and react with (agglutinate) their appropriate antigen.
    Author: rikazzz Comment
    Integument
    What distinguishes the stratum corneum of the epidermis from the other layers?
    The cells of the stratum corneum are dead, having lost all of their organelles and being filled with keratin.
    Author: rikazzz Comment
    Organisation of the Body
    Which of the following best describes the “anatomical position”?
    The anatomical position is achieved when standing with feet comfortably apart while displaying the ventral surface of the head, body and forearms to the same direction (forwards).
    Author: rikazzz Comment
    Muscles
    Which of the following is the smallest structure within a muscle fibre?
    Myosin is a molecule that makes up a thick myofilament. Many thick and thin myofilaments make up a sarcomere. Many sarcomeres joined end to end form a myofibril.
    Author: rikazzz Comment
    The Physics of Waves: Light Waves, Sound Waves and Ultrasound
    Ultrasound is least useful for examining what?
    The lungs contain air which reflect all of the ultrasound reaching it, making the lungs opaque to ultrasound.
    Author: rikazzz Comment
    Cardiovascular System
    What does “rhesus positive” refer to?
    Rh factor, Rh positive and Rh negative refer to the D antigen only. If the antigen is present on your RBC, you are called Rh positive (you have the Rh factor).
    Author: rikazzz Comment
    Chemistry for Physiology
    If a blood sample has a pH of 7.25, which of the following is NOT true?
    pH must be less than 7.0 for acidic to be true. The condition certainly is an acidosis.
    Author: rikazzz Comment
    Cardiovascular System
    What will be the partial pressure of oxygen in a hyperbaric chamber where the atmosphere contains 30% oxygen and is at a pressure of three atmospheres (300 kPa)?
    The partial pressure of oxygen is proportional to its percent concentration in the mixture of gases. 30% of 300 kPa = 90 kPa.
    Author: rikazzz Comment
    Chemistry for Physiology
    What is the percentage concentration of glucose if 80 gram of glucose is dissolved in 1 L of solution?
    80 g per 1000 ml = 8 g per 100 ml = 8%
    Author: rikazzz Comment
    Renal System
    In what part of the kidney are the glomeruli located?
    Only the cortex contains glomeruli.
    Author: rikazzz Comment