Anatomy and Physiology

    Nervous System
    In what part of the brain is the “decussation of the pyramids” found?
    The medulla oblongata is where the pyramidal tracts cross over (decussate).
    Author: rikazzz Comment
    Endocrine System
    Which of the following organ(s) are NOT endocrine organs?
    Renal gland is another name for the kidney.
    Author: rikazzz Comment
    Skeleton and Joints
    Which term refers to the joint between the two pelvic bones?
    The pubic symphysis joins the two pelvic bones anteriorly. It is an immovable joint.
    Author: rikazzz Comment
    Chemistry for Physiology
    Which statement about the osmotic pressure of an aqueous solution is correct? Osmotic pressure:
    Solutions with high “osmotic pressure” are concentrated solutions, and so water will diffuse into such solutions from solutions of lower concentration – a process known as osmosis. The other answers are nonsense.
    Author: rikazzz Comment
    Integument
    What is the name given to the most superficial layer of the integument?
    The stratum corneum is the horny (i.e. keratinised), dead covering to the epidermis. Choice D is another name for the hypodermis.
    Author: rikazzz Comment
    The Physics of Waves: Light Waves, Sound Waves and Ultrasound
    Which of the following conditions may be corrected by a diverging (concave lens)?
    In myopia, the image forms ventral (in front of) the retina. A diverging lens will extend the focal length of a myopic eye so that the image falls onto the retina.
    Author: rikazzz Comment
    Ionising Radiation
    In the nuclear reaction 4299Mo → X + 9943mTc , what does the symbol X represent?
    Mass number must be conserved; hence, 99 = s + 99; this means s = 0. Atomic number must be conserved; hence, 42 = a + 43; this means a = −1. The particle X with zero mass and charge of negative one is an electron (a beta negative particle).
    Author: rikazzz Comment
    Biomechanics
    What is a nurse attempting to minimise by getting close to a patient during a manual handling procedure?
    The shorter is the load arm, the smaller is the muscular effort that is required to move the lever and load.
    Author: rikazzz Comment
    Muscles
    Which term is given to the unit of a myofibril that contracts?
    The contraction of a myofibril is due to the shortening of its component sarcomeres.
    Author: rikazzz Comment
    Cardiovascular System
    Veins in the limbs have which one of the following characteristics?
    Veins have valves but not pulsatile flow or a thick layer of smooth muscle.
    Author: rikazzz Comment