Anatomy and Physiology

    Electricity
    Choose the correct alternative to make the following sentence correct. “If a person is in contact with the active wire of a domestic 240 V electricity supply, a macroshock will occur if the current that flows is “above/below” 1 milliamp and there is a second connection between the person and the “active/ground”.
    A macroshock will be noticed if the current is above 1 mA and the person is electrically connected simultaneously to the active wire and to the ground.
    Author: rikazzz Comment
    Cardiovascular System
    Which of the following will increase cardiac output?
    Sympathetic impulses will increase CO. Increased baroreceptor activity would decrease CO.
    Author: rikazzz Comment
    Reproductive System
    “External urethral meatus” is another name for?
    The external urethral meatus, also known as the external urethral orifice, is the opening or meatus of the urethra. It is the point where urine exits the urethra in males.
    Author: rikazzz Comment
    Skeleton and Joints
    A synovial joint is also known as one of the following, which one?
    Synovial fluid is the lubricant that allows friction-free joint movement. A synarthrosis is an immovable joint.
    Author: rikazzz Comment
    Organisation of the Body
    Which of the following is/are the contents of the ventral cavity?
    This is the best answer. It is a collective term for all organs in the thoracic and abdominopelvic cavities.
    Author: rikazzz Comment
    Nervous System
    What is the “blood-brain” barrier?
    The “barrier” is the wall of the capillary that allows some molecules/ ions to pass through into the cerebral spinal fluid but prevents the passage of many other molecules.
    Author: rikazzz Comment
    Chemistry for Physiology
    Acidity is stated as a pH value. If the pH of urine sample “A” is 6 and the pH of urine sample “B” is 7, then which of the following is true?
    The solution with higher hydrogen ion (=hydronium ion) concentration has the lower pH.
    Author: rikazzz Comment
    Cardiovascular System
    The consideration of pressure in gases differs from pressure in liquids because:
    There is a lot of space between the particles in a gas, so the volume of an enclosed can be decreased. Boyle’s law.
    Author: rikazzz Comment
    Gastrointestinal System
    Which of these processes occurs in the liver?
    Deamination, and making the non-essential amino acids, occurs in the liver. Pepsinogen is produced in the stomach lining, insulin in the pancreas and choice D in the intestine.
    Author: rikazzz Comment
    Gastrointestinal System
    Emulsification is the name of the process carried out by:
    Bile contains “surfactants” which congregate on the interface between lipid and water and so prevent small droplets of fat from aggregating into larger ones (=emulsification).
    Author: rikazzz Comment