Anatomy and Physiology

    Renal System
    In which part of the nephron does most of the reabsorption of water and solutes occur?
    The PCT absorbs the bulk of the water and solutes.
    Author: rikazzz Comment
    Nervous System
    Which of the following situations constitutes sensorineural hearing loss rather than conductive hearing loss?
    The organ of Corti in the inner ear generates auditory nerve impulses when the hair cells are stimulated. If some of the hair cells are damaged, they cannot produce impulses in the auditory nerve
    Author: rikazzz Comment
    Nervous System
    Which of the following is NOT a small bone involved in hearing?
    Meatus is a canal like tube, for example, the external acoustic meatus (of the temporal bone), urethral meatus (of the penis) and nasal meatus.
    Author: rikazzz Comment
    Endocrine System
    Which statement is NOT CORRECT about hormones?
    Steroid hormones are not based on amino acids. They are lipids.
    Author: rikazzz Comment
    Nervous System
    What name is given to the cells in the nervous system that produce nerve impulses?
    Neurons produce nerve impulses. Nerves are bundles of neurones. Neuroglia are cells that support and protect neurones.
    Author: rikazzz Comment
    Nervous System
    What are the two divisions of the autonomic nervous system?
    Choice A refers to the two divisions of the nervous system. Choice B refers to the two divisions of the peripheral nervous system. The terms in choice D are synonyms for those in choice B.
    Author: rikazzz Comment
    Body Temperature, Energy and Heat Loss
    The skin is usually at a lower temperature than the body’s core temperature (37 °C). What is the reason for this?
    Vasoconstriction limits the amount of blood (at 37) that flows near the skin which allows the skin temperature to approach that of the surroundings.
    Author: rikazzz Comment
    Gastrointestinal System
    What happens to the products of lipid digestion in the gut?
    Fats, being lipid soluble, diffuse into epithelial cells to be reconstituted into triglycerides.
    Author: rikazzz Comment
    Body Temperature, Energy and Heat Loss
    When is radiation an effective form of heat loss from the body?
    All objects radiate IR rays. If our body temp is greater than that of our surroundings, we will radiate more than we absorb from the surroundings. It is the body surface area, not the amount of bare skin, that determines the amount of energy radiated.
    Author: rikazzz Comment
    Cardiovascular System
    Which statement about the aorta is true?
    The aorta is an artery and so carries blood away from the LV. The pulmonary trunk carries blood from the right ventricle.
    Author: rikazzz Comment