Chapter 16 Endocrine System

23 Questions  I  By Kirstenw09
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Endocrine System Quizzes & Trivia

  
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  • 1. 
    Gluconeogenesis occurs in the liver due to the action of ________.
    • A. 

      Aldosterone

    • B. 

      Insulin

    • C. 

      Secretin

    • D. 

      Cortisol


  • 2. 
    Normal development of the immune system response is due in part to hormones produced by the ________.
    • A. 

      Adrenal medulla

    • B. 

      Pancreas

    • C. 

      Thyroid gland

    • D. 

      Thymus gland


  • 3. 
    Vurtually all of the protein or amino acid-based hormones exert their effects through intracellular ________.
    • A. 

      Ions

    • B. 

      Deactivators

    • C. 

      Nucleotides

    • D. 

      Second messangers


  • 4. 
    Which of the following is not a category of endocrine gland stimulus?
    • A. 

      Enzyme

    • B. 

      Humoral

    • C. 

      Neural

    • D. 

      Hormonal


  • 5. 
    Chemical substances secreted by cells into the extracellular fluids that regulate the metabolic function of other cells in the body are called ________.
    • A. 

      Enzymes

    • B. 

      Antibodies

    • C. 

      Proteins

    • D. 

      Hormones


  • 6. 
    Oxytocin ________.
    • A. 

      Release is an example of a positive feedback control mechanism

    • B. 

      Is an adenohypophyseal secretion

    • C. 

      Exerts its most important effects during menstruation

    • D. 

      Controls milk production


  • 7. 
    ADH ________.
    • A. 

      Increases urine production

    • B. 

      Promotes dehydration

    • C. 

      Is produced in the adenohypophysis

    • D. 

      Is inhibited by alcohol


  • 8. 
    Gonadocorticoid(s) ________.
    • A. 

      Synthesized by the adrenal medulla are primarily androgens

    • B. 

      Production by the adrenal gland is insignificant compared with sex hormone release from the gonads during late puberty

    • C. 

      Secretion inhibition is highly dependent on a negative feedback loop involving ACTH

    • D. 

      Hypersecretion can result in adrenogenital syndrome, also called feminization


  • 9. 
    Sometimes prolonged excessive exposure to high hormone concentrations causes a phenomenon known as ________.
    • A. 

      Diabetes mellitus

    • B. 

      Cellular inhibition

    • C. 

      Down-regulation

    • D. 

      Metabolism of protein kinases


  • 10. 
    The ability of a specific tissue or organ to respond to the presence of a hormone is dependent on ________.
    • A. 

      The location of the tissue or organ with respect to the circulatory path

    • B. 

      The membrane potential of the cells of the target organ

    • C. 

      The presence of the appropriate receptors on the cells of the target tissue or organ

    • D. 

      Nothing. all hormones of the human body are able to stimulate any and all cell types because hormones are powerful and nonspecific


  • 11. 
    Several hormones are synthesized in the hypothalamus and transported to the anterior pituitary gland. The mechanism of transportation from hypothalamus to anterior pituitary gland is through the ________.
    • A. 

      Hepatic portal system

    • B. 

      General circulatory system

    • C. 

      Hypophyseal portal system

    • D. 

      Feedback loop


  • 12. 
    Steroid hormones exert their action by ________.
    • A. 

      Entering the nucleus of a cell and initiating or altering the expression of a gene

    • B. 

      Finding an appropriate cell receptor and initiating cAMP activity

    • C. 

      Stimulating the synthesis of a glycogen

    • D. 

      Increasing blood pressure


  • 13. 
    When it becomes necessary to enlist the fight-or-flight response, a hormone that is released during the alarm phase of the general adaptation syndrome is ________.
    • A. 

      Estrogen

    • B. 

      Epinephrine

    • C. 

      Angiotensinogen

    • D. 

      Renin


  • 14. 
    One of the least complicated of the endocrine control systems directly responds to changing blood levels of ions and nutrients. Which of the following describes this mechanism?
    • A. 

      The rapid oxidation of carbohydrates

    • B. 

      Catabolic inhibition

    • C. 

      Protein synthesis

    • D. 

      Humoral stimulation


  • 15. 
    The major targets of growth hormone are ________.
    • A. 

      The blood vessels

    • B. 

      The adrenal glands

    • C. 

      The liver

    • D. 

      Bones and skeletal muscles


  • 16. 
    Which organ is responsible for synthesizing ANP?
    • A. 

      The heart

    • B. 

      The kidney

    • C. 

      The skin

    • D. 

      The spleen


  • 17. 
    Which of the following is not a steroid-based hormone?
    • A. 

      Estrogen

    • B. 

      Aldosterone

    • C. 

      Epinephrine

    • D. 

      Cortisone


  • 18. 
    Which of the following is true about calcium homeostasis?
    • A. 

      Increased calcitonin levels will cause increased blood calcium levels.

    • B. 

      High calcium levels cause bone resorption.

    • C. 

      Parathyroid hormone causes an increase in osteoblast activity.

    • D. 

      Parathyroid hormone is the single most important regulator of calcium levels in the blood.


  • 19. 
    Aldosterone ________.
    • A. 

      Is secreted by the neurohypophysis

    • B. 

      Functions to increase sodium reabsorption

    • C. 

      Presence increases potassium concentration in the blood

    • D. 

      Production is greatly influenced by ACTH


  • 20. 
    In circumstances where the body requires prolonged or increased levels of a hormone, the DNA of target cells will specify the synthesis of more receptors on the surface of the cells of the target organ. This is known as ________.
    • A. 

      The cellʹs sensitivity reaction

    • B. 

      Cellular affinity

    • C. 

      Up-regulation

    • D. 

      A reaction to a stressor


  • 21. 
    A man has been told that he is not synthesizing enough follicle-stimulating hormone (FSH), and for this reason he may be unable to father a child. Choose the correct statement to explain this problem.
    • A. 

      FSH stimulates estrogen secretion by ovarian cells; therefore it is not synthesized by males.

    • B. 

      The physician is wrong. A hormone made in the adenohypophysis could not influence fertility.

    • C. 

      FSH stimulates sperm production in the testes.

    • D. 

      The man must be producing progesterone, which inhibits the synthesis of FSH.


  • 22. 
    Glucocorticoids enable the body to deal appropriately with stress. They accomplish this by ________.
    • A. 

      Increasing blood glucose, fatty acid, and amino acid levels and enhancing blood pressure

    • B. 

      Decreasing the heart rate, thus decreasing blood pressure

    • C. 

      Stimulating the pancreas to release insulin

    • D. 

      Blocking the neurotransmitters that prepare the body for the stress response


  • 23. 
    What ion is sometimes used as a second messenger of amino acid-base hormones?
    • A. 

      Iron

    • B. 

      Calcium

    • C. 

      Sodium

    • D. 

      Chlorine


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