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Homeostasis – Launching Pad for Cell Biology

by Georgina Cornwall, PhD
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    About the Lecture

    The lecture Homeostasis – Launching Pad for Cell Biology by Georgina Cornwall, PhD is from the course Introduction to Cell Biology.


    Included Quiz Questions

    1. The negative feedback loop amplifies the stimulus whereas the positive feedback loop opposes the stimulus in homeostasis mechanism
    2. The tendency of a living system to maintain a stable internal environment is called homeostasis
    3. Homeostasis is a dynamic equilibrium between the exterior and interior of a cell to provide the maximum stability to the living system
    4. Homeostasis enhances the chances of survival of an organism under changing external environmental conditions.
    5. The breakdown of homeostasis system leads to disease in the organism
    1. Via vasoconstriction in skin and muscle contraction
    2. Via vasodilation and sweat secretion
    3. Via release of oxytocin
    4. Via positive feedback mechanism
    5. By increasing the blood flow near the skin surface
    1. Human birth is an excellent example of negative feedback mechanism
    2. The negative feedback loop of homeostasis reverses the direction of change
    3. The negative feedback loop helps in the survival of an organism in a changing external environment by keeping the interior of a living system near to constant
    4. The negative feedback loop is the predominating homeostasis in the living systems
    5. The regulation of body temperature and blood sugar levels in the humans are a part of negative feedback mechanism
    1. …release of oxytocin hormone from the posterior pituitary to enhance the uterine contractions
    2. …release of oxytocin hormone from the posterior pituitary to suppress the uterine contractions
    3. …release of follicle stimulating hormone from the posterior pituitary to increase the uterine contractions
    4. …release of vasopressin hormone from the posterior pituitary to increase the uterine contractions
    5. …release of prolactin hormone from the posterior pituitary to suppress the uterine contractions
    1. Amount of guanine in the DNA molecule
    2. Blood sugar levels
    3. Thermoregulation
    4. Osmoregulation
    5. Blood partial pressure of O₂ and CO₂

    Author of lecture Homeostasis – Launching Pad for Cell Biology

     Georgina Cornwall, PhD

    Georgina Cornwall, PhD


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    Homeostasis-fisiología
    By Luna F. on 02. April 2018 for Homeostasis – Launching Pad for Cell Biology

    Me gusto mucho porque pude repasar el tema sobre la homeostasis.

     
    Great!
    By Justin C. on 14. September 2017 for Homeostasis – Launching Pad for Cell Biology

    Very good keeps on track with my textbook. Taking Intro Bio