Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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## Blood Glucose Regulation and Human Physiology

### Introduction
This educational section provides an overview of how blood glucose levels change over time after consuming food and highlights the body's physiological responses to maintain homeostasis.

### Graph Interpretation

#### Blood Glucose Over Time
The graph titled "Blood Glucose Over Time" illustrates how the blood glucose levels (measured in milligrams per deciliter) fluctuate over a period of 120 minutes. Initially, at time 0, the blood glucose level is approximately 85 mg/dL. As time progresses, reaching a peak around 115 mg/dL at roughly 30 minutes. After this peak, the blood glucose level begins to decline, passing through 100 mg/dL around the 60-minute mark, and eventually returning close to the initial level by 120 minutes.

*Source: Adapted from [Science News](https://www.sciencenews.org/article/good-diet-you-may-be-bad-me).*

### Discussion Questions
1. **Explain why most human cells require a supply of glucose.**

   *Answer: Most human cells require glucose as a primary source of energy. Glucose is essential for cellular respiration, a metabolic process that converts glucose into ATP (adenosine triphosphate), the energy currency of the cell. ATP is necessary for various cellular activities and functions, including growth, repair, and maintenance.*

2. **State one specific response of the body to the increase in blood glucose level that would account for the changes that begin about 30 minutes after eating the cookie.**

   *Answer: One specific response of the body to the increase in blood glucose is the release of insulin from the pancreas. Insulin facilitates the uptake of glucose by cells from the bloodstream, thereby reducing blood glucose levels back to normal. This response begins around 30 minutes after eating as insulin levels rise to manage the peak in blood glucose.*

3. **Describe how the line representing blood glucose would change if the body could not take corrective actions to return this system to normal levels after eating a cookie.**

   *Answer: If the body could not take corrective actions, such as the release of insulin, to return blood glucose levels to normal, the line on the graph would continue to rise after eating the cookie. There would be no peak followed by a decline; instead, blood glucose levels would remain elevated, potentially leading to hyperglycemia.*

4. **Based on the data and information provided, state whether or
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Transcribed Image Text:## Blood Glucose Regulation and Human Physiology ### Introduction This educational section provides an overview of how blood glucose levels change over time after consuming food and highlights the body's physiological responses to maintain homeostasis. ### Graph Interpretation #### Blood Glucose Over Time The graph titled "Blood Glucose Over Time" illustrates how the blood glucose levels (measured in milligrams per deciliter) fluctuate over a period of 120 minutes. Initially, at time 0, the blood glucose level is approximately 85 mg/dL. As time progresses, reaching a peak around 115 mg/dL at roughly 30 minutes. After this peak, the blood glucose level begins to decline, passing through 100 mg/dL around the 60-minute mark, and eventually returning close to the initial level by 120 minutes. *Source: Adapted from [Science News](https://www.sciencenews.org/article/good-diet-you-may-be-bad-me).* ### Discussion Questions 1. **Explain why most human cells require a supply of glucose.** *Answer: Most human cells require glucose as a primary source of energy. Glucose is essential for cellular respiration, a metabolic process that converts glucose into ATP (adenosine triphosphate), the energy currency of the cell. ATP is necessary for various cellular activities and functions, including growth, repair, and maintenance.* 2. **State one specific response of the body to the increase in blood glucose level that would account for the changes that begin about 30 minutes after eating the cookie.** *Answer: One specific response of the body to the increase in blood glucose is the release of insulin from the pancreas. Insulin facilitates the uptake of glucose by cells from the bloodstream, thereby reducing blood glucose levels back to normal. This response begins around 30 minutes after eating as insulin levels rise to manage the peak in blood glucose.* 3. **Describe how the line representing blood glucose would change if the body could not take corrective actions to return this system to normal levels after eating a cookie.** *Answer: If the body could not take corrective actions, such as the release of insulin, to return blood glucose levels to normal, the line on the graph would continue to rise after eating the cookie. There would be no peak followed by a decline; instead, blood glucose levels would remain elevated, potentially leading to hyperglycemia.* 4. **Based on the data and information provided, state whether or
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