week 7

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School

Western Governors University *

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Course

C785

Subject

Health Science

Date

Apr 3, 2024

Type

docx

Pages

4

Uploaded by AdmiralBarracuda4276

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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’ influence 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 work” Have 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) a. GRNH b. FSH c. LH d. DMAU e. Progesterone f. Testosterone 2. Data: (2 points; ½ point each) Endometrial thickness (0-6) Control 5 GnRH 5 Progesterone 1 Testosterone 1.5 3. What is the importance of a having a control in an experiment? (2 points) Without a control, it would be impossible to verify if the results were accurate. Without a control, you cannot be certain that your experiment was successful. 4. What effect does an increase in GnRH release from the hypothalamus have on the pituitary? (2 points) More GnRH is produced from the pituitary gland because of rising GnRH concentrations in the hypothalamus. The amount of LH produced rises as a result. the gonads, or the ovaries and testes, secrete FSH and estrogen. As a result, the pituitary gland produces different amounts of those hormones, which increases the production of FSH and estradiol. Ovulation is brought on by an increase in the release of estradiol from the ovaries and the creation of sperm, which are both influenced by the increased hormone production.
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