Anatomy and Physiology

    Nervous System
    What and where is the precentral gyrus?
    The precentral gyrus of the frontal lobe is the primary motor area.
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    Chemistry for Physiology
    Which of the following type of bond between atoms is the weakest?
    The hydrogen bond is the weakest. Almost all covalent bonds are polar bonds.
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    Organisation of the Body
    What are the terms cortex and medulla used to describe?
    The cortex of the kidney, for example, is the deep, inner part, while the cortex is the more superficial, outer part.
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    Chemistry for Physiology
    Three of the solutions below have the SAME level of acidity (or alkalinity); the other is different. Which is the different one?
    Blood has pH in the range 7.35–7.45. The other choices all have pH = 7.0
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    Cardiovascular System
    Where does the pulmonary trunk deliver its blood to?
    Pulmonary refers to the lungs.
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    Biomechanics
    When the biceps brachii muscle flexes the forearm, what is the forearm an example of?
    Third-class levers have the effort force between the fulcrum and the load.
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    Cardiovascular System
    In the circulatory system, why does an increase in cardiac output cause an increase in volume flow rate (of blood)? Because:
    The number of millilitres of blood per minute is volume flow rate and cardiac output. They are the same thing.
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    Nervous System
    What statement is true about spinal reflexes?
    A spinal reflex does not involve processing by the brain. However they can be inhibited or reinforced by the brain. Some are polysynaptic.
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    Gastrointestinal System
    What food is digested into monoglycerols?
    Dietary lipids are triglycerols which are digested into free fatty acids and monoglycerols.
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    Ionising Radiation
    Exposing a foetus or young baby to x-rays should be avoided. What is most likely the cause of the danger?
    X-rays are ionising radiation. This means that ions may be formed from the atoms that make up DNA. In this case, the chemical bonds between atoms will be broken, and the molecule will be changed.
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