Life Science 3

20 Questions | Total Attempts: 45

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Life Science Quizzes & Trivia

More systems like endocrine


Questions and Answers
  • 1. 
    Which of the following statements is false?
    • A. 

      The nervous system and the endocrine system work together to maintain homeostasis;

    • B. 

      exocrine glands produce hormones;

    • C. 

      Endocrine glands discharge their secretions directly into the blood

    • D. 

      Some glands are both exocrine and endocrine

  • 2. 
    Which of the following statements is true?
    • A. 

      Hormones influence target organs;

    • B. 

      All hormones are steroids

    • C. 

      Release of hormones is always controlled by the pituitary gland

    • D. 

      Positive feedback control maintains homeostasis

  • 3. 
     Which of the following is not controlled by negative feedback?
    • A. 

      Blood glucose levels

    • B. 

      Birth of a baby

    • C. 

      body temperature

    • D. 

      Water and electrolyte concentrations.

  • 4. 
     Communication by the endocrine system relies on what type of message?
    • A. 

      Neural;

    • B. 

      Spiritual;

    • C. 

      Chemical

    • D. 

      Conceptual.

  • 5. 
    The islets of Langerhans are associated with the production of which substance?
    • A. 

      insulin

    • B. 

      Digestive enzymes;

    • C. 

      Pituitary hormones

    • D. 

      Adrenal hormones

  • 6. 
    Blood glucose levels are regulated by which two hormones?
    • A. 

      Calcitonin and parathyroid hormone;

    • B. 

      Oestrogen and progesterone;

    • C. 

      Insulin and glucagon

    • D. 

      Testosterone and adrenaline

  • 7. 
    Which of the following statements is correct?
    • A. 

      Insulin increases blood glucose, glucagon decreases blood glucose;

    • B. 

      Insulin increases blood glucose, glucagon has no effect on blood glucose;

    • C. 

      Insulin decreases blood glucose, glucagon increases blood glucose;

    • D. 

      Insulin decreases blood glucose, glucagon has no effect on blood glucose.

  • 8. 
    Indirect feedback control involves the release of hormones form the:
    • A. 

      Testes and ovaries;

    • B. 

      Anterior and posterior pituitary

    • C. 

      pancreas and stomach;

    • D. 

      Hypothalamus and anterior pituitary.

  • 9. 
     The hypothalamus is found:
    • A. 

      N the abdominal cavity;

    • B. 

      Superior to the kidneys;

    • C. 

      At the base of the brain;

    • D. 

      Embedded in the thyroid gland.

  • 10. 
    The two hormones secreted by the posterior pituitary are
    • A. 

      Oxytocin and antidiuretic hormone (ADH)

    • B. 

      Calcitonin and parathyroid hormone

    • C. 

      Insulin and glucagon

    • D. 

      Oestrogen and progesterone

  • 11. 
    Release of oxytocin and antidiuretic hormone (ADH) is triggered by:
    • A. 

      Blood sugar levels

    • B. 

      nerve impulses from the hypothalamus

    • C. 

      Physical trauma;

    • D. 

      None of these

  • 12. 
    Which of the following pairs of body systems primarily regulate the activities of the other systems?
    • A. 

      Cardiovascular and muscular systems;

    • B. 

      Nervous and endocrine systems;

    • C. 

      Lymphatic and integumentary systems

    • D. 

      Endocrine and lymphatic systems

  • 13. 
    Which of the following controls the activity of all the others?
    • A. 

      Thyroid gland;

    • B. 

      Pituitary gland;

    • C. 

      Adrenal cortex;

    • D. 

      Hypothalamus

  • 14. 
    The pancreas increases its output of insulin in response to:
    • A. 

      An increase in body temperature;

    • B. 

      Changing cycles of light and dark;

    • C. 

      An increase in blood glucose

    • D. 

      A hormone secreted by the anterior pituitary.

  • 15. 
     Which of the following is false?  Hormones are:
    • A. 

      Usually derived from amino acids or cholesterol;

    • B. 

      Often described as chemical messengers;

    • C. 

      Carried in the blood to target organs or tissues;

    • D. 

      Always controlled by levels of chemicals in the blood.

  • 16. 
     Which of the following glands is both exocrine and endocrine?
    • A. 

      thyroid;

    • B. 

      Adrenal;

    • C. 

      Parathyroid;

    • D. 

      Pancreas.

  • 17. 
    Which of the following produces trophic hormones?
    • A. 

      Anterior pituitary gland;

    • B. 

      Testes;

    • C. 

      ovaries;

    • D. 

      Adrenal gland.

  • 18. 
    The two hormones responsible for development and maintenance of female reproductive structures are:
    • A. 

      Calcitonin and parathyroid hormone;

    • B. 

      insulin and glucagon;

    • C. 

      Oestrogen and progesterone

    • D. 

      Oxytocin and antidiuretic hormone (ADH).

  • 19. 
    Homeostasis can be maintained by :
    • A. 

      Positive feedback control;

    • B. 

      Negative feedback control;

    • C. 

      Voluntary control

    • D. 

      None of the above

  • 20. 
    An example of a hormone whose release is controlled directly by levels of chemicals in the blood is:
    • A. 

      thyroid hormone;

    • B. 

      Cortisol;

    • C. 

      Testosterone;

    • D. 

      Insulin