Chamberlain University Wk 7 Endocrine System Lab Report
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Week 7 Endocrine System Lab
Learning Objectives:
Understand hormonal feedback mechanisms
Introduction: The body uses a variety of mechanisms to keep hormone levels tightly
regulated. A critical mechanism is using feedback loops in which a hormone, such as
estrogen, feeds back to control its own production. This can be either a positive or a negative
feedback loop.
In a negative feedback loop, a stimulus, such as a hormone or a neurotransmitter, causes the
release of a product, such as estrogen. When the product reaches a certain level in the
bloodstream, it signals to the hypothalamus and anterior pituitary to stops further release of
the stimulating hormone or neurotransmitter and thereby leads to reduced levels of the
product.
A positive feedback loop is the opposite loop. A product signals to produce more of the
stimulating hormone or neurotransmitter which causes a continuous increase of the product.
Can we control hormones? In this simulation you will learn different hormones)nfluence on
fertility. We will perform animal friendly virtual experiments on some beautiful bunnies to try to
keep the petting zoo population from getting out of control!
Assignment:
Part 1 Complete the Labster ” Endocrinology: Learn how contraceptives workave the lab report with you as you go through the lab to record data. The theory section is a
helpful resource.
Part 2 Complete the lab report
Endocrine System Lab Report
1. What hormones were used in the fertility experiments? (2 points)
2. Data: (2 points; 0oint each)
Endometrial thickness (0-6)
Control
GnRH
Progesterone
Testosterone
3. What is the importance of a having a control in an experiment? (2 points)
4. What effect does an increase in GnRH release from the hypothalamus have on the
pituitary? (2 points)
5. a. Which of the hormones tested would likely decrease fertility in females? (2 points)
b. Which of the hormones tested would likely decrease fertility in males? (1 point)
6. Why might testosterone not be an ideal contraceptive choice for females? (2 points)
7. Discuss an example of a negative hormonal feedback mechanism other than those
involving the reproductive system. (2 points)
Grading Rubric for Lab Report
Points
Activity
Deliverable
Part 1
Complete Labster
15
Part 2
Total
Complete lab report
Complete all lab activities
15
30
Purchase answer to see full
attachment
Learning Objectives:
Understand hormonal feedback mechanisms
Introduction: The body uses a variety of mechanisms to keep hormone levels tightly
regulated. A critical mechanism is using feedback loops in which a hormone, such as
estrogen, feeds back to control its own production. This can be either a positive or a negative
feedback loop.
In a negative feedback loop, a stimulus, such as a hormone or a neurotransmitter, causes the
release of a product, such as estrogen. When the product reaches a certain level in the
bloodstream, it signals to the hypothalamus and anterior pituitary to stops further release of
the stimulating hormone or neurotransmitter and thereby leads to reduced levels of the
product.
A positive feedback loop is the opposite loop. A product signals to produce more of the
stimulating hormone or neurotransmitter which causes a continuous increase of the product.
Can we control hormones? In this simulation you will learn different hormones)nfluence on
fertility. We will perform animal friendly virtual experiments on some beautiful bunnies to try to
keep the petting zoo population from getting out of control!
Assignment:
Part 1 Complete the Labster ” Endocrinology: Learn how contraceptives workave the lab report with you as you go through the lab to record data. The theory section is a
helpful resource.
Part 2 Complete the lab report
Endocrine System Lab Report
1. What hormones were used in the fertility experiments? (2 points)
2. Data: (2 points; 0oint each)
Endometrial thickness (0-6)
Control
GnRH
Progesterone
Testosterone
3. What is the importance of a having a control in an experiment? (2 points)
4. What effect does an increase in GnRH release from the hypothalamus have on the
pituitary? (2 points)
5. a. Which of the hormones tested would likely decrease fertility in females? (2 points)
b. Which of the hormones tested would likely decrease fertility in males? (1 point)
6. Why might testosterone not be an ideal contraceptive choice for females? (2 points)
7. Discuss an example of a negative hormonal feedback mechanism other than those
involving the reproductive system. (2 points)
Grading Rubric for Lab Report
Points
Activity
Deliverable
Part 1
Complete Labster
15
Part 2
Total
Complete lab report
Complete all lab activities
15
30
Purchase answer to see full
attachment
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