Anatomy and Physiology

    Respiratory System
    To which structures are the lung’s alveoli attached?
    Terminal bronchioles end in respiratory bronchioles, which branch into alveolar ducts from which open alveolar sacs. These alveolar sacs are lined with the alveoli.
    Author: rikazzz Comment
    Reproductive System
    Where do FSH and LH come from?
    GnRH is released from the hypothalamus to stimulate the anterior pituitary gland to release FSH and LH.
    Author: rikazzz Comment
    Reproductive System
    What is the name of the tube that carries sperm from the testes to the prostate gland?
    The vas deferens (=ductus deferens) begins at the epididymis and ends at the ejaculatory duct in the prostate.
    Author: rikazzz Comment
    Reproductive System
    How many chromosomes does a human gamete have?
    A gamete (a sperm or egg) has 23 chromosomes, so when they fuse to form the fertilised egg, there is a total of 46 (=23 pairs).
    Author: rikazzz Comment
    Skeleton and Joints
    Which of the listed bones is the most inferior?
    Hyoid is in the neck. Choice A and B are in the skull. Femoid is not a bone.
    Author: rikazzz Comment
    Cardiovascular System
    A scuba diver swimming at a depth of 10 m will experience a pressure of how many atmospheres?
    A head of water of 10 m will produce an atmosphere of pressure, which when added to the one atmosphere of pressure due to the air of the atmosphere gives 2 atm pressure.
    Author: rikazzz Comment
    Skeleton and Joints
    Synovial joints differ from the other types of joint between bones in the body because
    Hyaline cartilage is very smooth which (along with synovial fluid) makes the movement of the articulating bones almost friction-free.
    Author: rikazzz Comment
    Muscles
    What is the gluteus maximus named for? Its:
    The gluteus maximus is larger than either the gluteus medius or gluteus minimus.
    Author: rikazzz Comment
    Nervous System
    In brain death, why are the corneal and pharyngeal reflexes absent?
    The corneal (blink) reflex and pharyngeal (gag) reflex are mediated by cranial nerves V and IX, respectively. These nerves are attached to the brainstem. In an unconscious person who is brain dead, even the brainstem is unresponsive.
    Author: rikazzz Comment
    Body Temperature, Energy and Heat Loss
    Which of the following statements is correct? As a means of losing heat from the body, evaporation of sweat works:
    Sweat will evaporate, and cooling will be achieved as long as the air is not already saturated with water vapour.
    Author: rikazzz Comment