Homeostasis Practice Quiz 2

15 Questions | Total Attempts: 1489

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Homeostasis Practice Quiz 2

Another chance to practice for our quiz & unit test. . . . Do you know your glands, hormones & definitions?


Questions and Answers
  • 1. 
    Which of the following thermoregulatory responses would be considered a strictly behavioural response (not physiological)?
    • A. 

      Shivering on a cold day

    • B. 

      Sweating on a hot day

    • C. 

      Hibernation of some mammals

    • D. 

      Vasodilation of skin capillaries

    • E. 

      Basking by some reptiles

  • 2. 
    For steroid hormones, which of these statements does NOT reflect the way they act in our cells?
    • A. 

      They pass directly through the cell membrane since they are cholesterol-based

    • B. 

      They exert their actions directly on a cell's DNA

    • C. 

      Steroid molecules all have a distinct four-ringed aspect to the structure of their molecules.

    • D. 

      Once inside a cell, they must find a mobile receptor

    • E. 

      Only a hormone-receptor complex is able to enter the nucleus.

  • 3. 
    Which of the following is NOT a part of a mammalian nephron?
    • A. 

      Glomerulus & Bowman's Capsule

    • B. 

      Loop of Henle

    • C. 

      Pacinian corpuscle

    • D. 

      Distal Convoluted tubule

    • E. 

      Proximal Convoluted tubule

  • 4. 
    For peptide hormones, which of the following statements is TRUE about their action?
    • A. 

      Because they're made of amino acids, they readily enter the cell.

    • B. 

      They attach themselves to a molecule of cAMP once they enter

    • C. 

      They split in two, and only one half stimulates the target cell; this is the 'second messenger'

    • D. 

      Their size requires them to bind to an external cell receptor protein.

    • E. 

      Once inside the cell, they attach to a receptor on the nuclear membrane.

  • 5. 
    Of the following statements regarding the pancreas, which best describes the overall function of this organ?
    • A. 

      It is both an endocrine & exocrine gland, secreting both hormones & digestive enzymes.

    • B. 

      It produces insulin in its alpha cells, and glucagon in its beta cells.

    • C. 

      It was discovered by Canadian scientists.

    • D. 

      The islets of Langerhans produce its digestive enzymes, while interstitial cells produce the hormones.

    • E. 

      Makes glucose available by breaking down glycogen, which it stores as well.

  • 6. 
    The condition in which the thyroid gland swells due to lack of dietary iodine is called:
    • A. 

      Grave's Disease

    • B. 

      Goiter

    • C. 

      Diabetes

    • D. 

      Meniere's Disease

    • E. 

      Glycosemia

  • 7. 
    Once calcitonin is released into your blood stream, which of the following will happen?
    • A. 

      Blood calcium will drop

    • B. 

      Osteoclasts will absorb calcium from the blood

    • C. 

      Osteoblasts will absorb calcium from the blood

    • D. 

      Only A & B

    • E. 

      Only A & C

  • 8. 
    A tumour in the adrenal medulla will result in which of the following symptoms?
    • A. 

      Hypercalcemia

    • B. 

      Glycosuria

    • C. 

      Low-grade fever

    • D. 

      Increased heart rate & blood pressure

    • E. 

      Osteoporosis

  • 9. 
    If your body produced too much ADH, what might be a symptom?
    • A. 

      Very low urine volume & an increase in blood pressure

    • B. 

      Copious amounts of urine & a drop in blood pressure

    • C. 

      Seizures due to high levels of calcium

    • D. 

      A failure of the Renin-Angiotensin-Aldosterone system

    • E. 

      Frequent thirst & urination.

  • 10. 
    The actions of FSH in the human body include which of the following?
    • A. 

      Stimulates ovarian granulosa cells to make estrogen.

    • B. 

      Stimulates sertoli cells to enhance sperm maturation.

    • C. 

      Causes release of testosterone in both male & female gonads.

    • D. 

      All of these - A, B, C

    • E. 

      Only A & B

  • 11. 
    Because they both 'seek out' reproductive tissues in the body, both FSH & LH are considered which type of hormone?
    • A. 

      Releasing hormone

    • B. 

      Gonadotropic hormone

    • C. 

      Antagonistic hormones

    • D. 

      Osmoregulatory hormones

    • E. 

      Inhibitory hormones

  • 12. 
    In the female human body, FSH & LH levels are controlled by a negative feedback from which two hormones?
    • A. 

      Estrogen & Testosterone

    • B. 

      Testosterone & Inhibin

    • C. 

      Prolactin & Oxytocin

    • D. 

      Progesterone & Estrogen

    • E. 

      Prolactin & Progesterone

  • 13. 
    Our thirst response is triggered when receptor cells in which organ sense an increase in blood concentration?
    • A. 

      Anterior Pituitary

    • B. 

      Posterior Pituitary

    • C. 

      Hypothalamus

    • D. 

      Nephron

    • E. 

      Stomach

  • 14. 
    The process of making glucose available by converting amino acids to glucose is called...
    • A. 

      Glycolysis

    • B. 

      Glycogenolysis

    • C. 

      Gluconation

    • D. 

      Gluconeogenesis

    • E. 

      Glycosemia

  • 15. 
    Which of the following is NOT true about how our body controls appetite homeostatically?
    • A. 

      PYY from the small intestine helps suppress appetite

    • B. 

      Ghrelins from the stomach help signal fullness/hunger

    • C. 

      Leptins from fat tissue (adipose cells) help suppress appetite

    • D. 

      Insulin can exert slight appetite suppression, while lowering blood glucose

    • E. 

      Glucagon can influence the brain to stimulate a sensation of hunger.

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