Physioex: Endocrine System Lab Quiz Part 3 (Hormone Replacement Therapy)

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| By Lildrammaqueen

Lildrammaqueen

Community Contributor

Quizzes Created: 3 | Total Attempts: 4,411

Questions: 8 | Attempts: 1,663 | Updated: Mar 21, 2023

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Questions from pre-lab quiz and post-lab quiz about hormone replacement therapy.

Questions and Answers

1.

Follicle-stimulating hormone (FSH)
- A.
  
  Is a steroid hormone.
- B.
  
  Stimulates ovarian follicle development.
- C.
  
  Is a posterior pituitary hormone secretion.
- D.
  
  Inhibits osteoclast activity and stimulates calcium uptake and deposition in long bones.
Correct Answer
B. Stimulates ovarian follicle development.

Explanation
FSH is a hormone that plays a crucial role in the development and maturation of ovarian follicles in females. It is responsible for stimulating the growth and development of these follicles, which contain the eggs. This process is essential for the reproductive function in women, as it prepares the follicles for ovulation and eventual fertilization. FSH is released by the anterior pituitary gland and acts on the ovaries to regulate the menstrual cycle and promote the production of estrogen. Therefore, the correct answer is that FSH stimulates ovarian follicle development.

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2.

Estrogen
- A.
  
  Is produced by developing ovarian follicles.
- B.
  
  Is a peptide hormone.
- C.
  
  Is an anterior pituitary hormone secretion.
- D.
  
  Inhibits bone growth and, therefore, protects against the development of osteoporosis.
Correct Answer
A. Is produced by developing ovarian follicles.

Explanation
Estrogen is a hormone that is produced by developing ovarian follicles. It is not a peptide hormone or an anterior pituitary hormone secretion. Estrogen also does not inhibit bone growth, but rather promotes it. This hormone is important for the development and maintenance of female reproductive organs and secondary sexual characteristics.

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3.

Calcitonin
- A.
  
  Stimulates osteoclast activity and inhibits calcium uptake into long bones.
- B.
  
  Is an anterior pituitary hormone secretion.
- C.
  
  Is a steroid hormone.
- D.
  
  Works against the development of osteoporosis.
Correct Answer
D. Works against the development of osteoporosis.

Explanation
Calcitonin is a hormone that works against the development of osteoporosis. Osteoporosis is a condition characterized by weak and brittle bones, and calcitonin helps to prevent bone loss by inhibiting the activity of osteoclasts, which are cells that break down bone tissue. By inhibiting osteoclast activity, calcitonin helps to maintain bone density and strength, reducing the risk of fractures and the progression of osteoporosis.

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4.

Which of the following statements is true?
- A.
  
  The ovaries stop secreting estrogen after menopause.
- B.
  
  An untreated female's T score in anticipated to become more positive after menopause.
- C.
  
  Surgical removal of the ovaries will help limit the potential health problems associated with menopause.
- D.
  
  Osteoporosis is an increase in the density of porous long bones.
Correct Answer
A. The ovaries stop secreting estrogen after menopause.

Explanation
After menopause, the ovaries stop secreting estrogen. Menopause is a natural biological process that occurs in women, typically between the ages of 45 and 55, marking the end of their reproductive years. As women age, their ovaries gradually produce less estrogen, leading to the cessation of ovulation and menstruation. This decrease in estrogen production can result in various symptoms such as hot flashes, night sweats, mood swings, and vaginal dryness. Hormone replacement therapy (HRT) may be used to alleviate these symptoms by supplementing the declining estrogen levels.

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5.

Saline injections were used in this experiment to measure the effect of
- A.
  
  A placebo on bone density.
- B.
  
  Large needles on the behavior of rats.
- C.
  
  Potassium chloride on bone density.
- D.
  
  Sodium chloride on bone density.
Correct Answer
A. A placebo on bone density.

Explanation
In this experiment, saline injections were used as a placebo to measure the effect on bone density. A placebo is a substance or treatment that has no therapeutic effect, but is given to participants in a study to compare the results with those who receive the actual treatment. By using saline injections as a placebo, the researchers can determine the true effect of the treatment being studied on bone density, without any confounding factors from the injection itself.

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6.

In the ovariectomized rats used in this experiment
- A.
  
  Estrogen levels were reduced because of the increased negative feedback caused by the injections.
- B.
  
  Estrogen levels were elevated because of the loss of negative feedback control.
- C.
  
  Osteoporosis was evident prior to the injections of estrogen.
- D.
  
  Follicle-stimulating hormone (FSH) levels were reduced because of the loss of negative feedback control.
Correct Answer
C. Osteoporosis was evident prior to the injections of estrogen.
7.

Injection of calcitonin into an ovariectomized rat will
- A.
  
  Prevent goiter formation in this rat through its effect on negative feedback to the thyroid gland.
- B.
  
  Make the rat crave more milk and other calcium-rich beverages.
- C.
  
  Have no effect on bone density and, therefore, should be excluded from rat hormone-replacement therapies.
- D.
  
  Inhibit osteoclast activity and stimulate calcium uptake and deposition in long bones.
Correct Answer
D. Inhibit osteoclast activity and stimulate calcium uptake and deposition in long bones.
8.

As the rat's bone density increases
- A.
  
  The X-ray scanning assay reports a more-negative T-score
- B.
  
  The rat requires a higher dose of hormones to be injected for adequate therapy.
- C.
  
  The X-ray scanning assay reports a less-negative T-score.
- D.
  
  The rat requires more gaseous anesthetic to remain immobilized.
Correct Answer
C. The X-ray scanning assay reports a less-negative T-score.

Explanation
As the rat's bone density increases, it means that the rat has stronger bones. A more-negative T-score indicates lower bone density and weaker bones, while a less-negative T-score indicates higher bone density and stronger bones. Therefore, if the rat's bone density increases, the X-ray scanning assay would report a less-negative T-score.

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Current Version
Mar 21, 2023

Quiz Edited by
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Sep 03, 2011

Quiz Created by
Lildrammaqueen

Physioex: Endocrine System Lab Quiz Part 3 (Hormone Replacement Therapy)

Follicle-stimulating hormone (FSH)

Estrogen

Calcitonin

Which of the following statements is true?

Saline injections were used in this experiment to measure the effect of

In the ovariectomized rats used in this experiment

Injection of calcitonin into an ovariectomized rat will

As the rat's bone density increases