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Body temperature (normal range) Copyright © McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. HOMEOSTASIS Body temperature HOMEOSTASIS Body temperature Control centers in the brain increase stimulation of sweat glands and relax blood vessels in the skin when receptors detect increased body temperature. Start Here Control contore in the brain doorocco Sweat glands produce sweat; blood vessels in the skin dilate. Body temperature (normal range) Sweat gland 1 HOMEOSTASIS Body temperature HOMEOSTASIS Body temperature

Body temperature (normal range) Copyright © McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. HOMEOSTASIS Body temperature HOMEOSTASIS Body temperature Control centers in the brain increase stimulation of sweat glands and relax blood vessels in the skin when receptors detect increased body temperature. Start Here Control contore in the brain doorocco Sweat glands produce sweat; blood vessels in the skin dilate. Body temperature (normal range) Sweat gland 1 HOMEOSTASIS Body temperature HOMEOSTASIS Body temperature

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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The diagram illustrates the process of thermoregulation in maintaining homeostasis within the human body, focusing on the regulation of body temperature. ### Diagram Description: 1. **Homeostasis (Starting Point)** - The process begins at a state of homeostasis, where the body temperature is maintained within a normal range. This is represented by a wavy blue line indicating normal body temperature fluctuations around a central point. 2. **Response to Increased Body Temperature:** - **Brain's Role:** - Control centers in the brain detect increased body temperature through receptors. - The brain responds by increasing the stimulation of sweat glands and relaxing blood vessels in the skin. - **Sweat Glands and Blood Vessels:** - Sweat glands produce sweat. - Blood vessels in the skin dilate, facilitating heat loss through the skin surface to lower the body temperature back to its set point. 3. **Return to Homeostasis:** - As body temperature returns to normal, the process cycles back to homeostasis. 4. **Response to Decreased Body Temperature:** - **Brain's Role:** - Control centers in the brain detect decreased body temperature. - The brain decreases stimulation of sweat glands and constricts blood vessels in the skin. - **Sweat Glands and Skeletal Muscles:** - Sweat glands cease sweat production. - Blood vessels constrict to reduce heat loss. - Skeletal muscles may contract (shivering) to generate heat. 5. **Return to Homeostasis:** - As body temperature increases back to the normal range, the process cycles back to homeostasis. ### Explanation: This thermoregulatory process involves feedback mechanisms aimed at either dissipating excess heat or conserving heat to stabilize internal conditions. The brain acts as a critical control center, regulating physiological responses through changes in sweat production, blood vessel dilation, and muscle activity. These responses are essential for maintaining a stable internal environment, crucial for optimal enzyme function and overall metabolic processes.
Transcribed Image Text:The diagram illustrates the process of thermoregulation in maintaining homeostasis within the human body, focusing on the regulation of body temperature. ### Diagram Description: 1. **Homeostasis (Starting Point)** - The process begins at a state of homeostasis, where the body temperature is maintained within a normal range. This is represented by a wavy blue line indicating normal body temperature fluctuations around a central point. 2. **Response to Increased Body Temperature:** - **Brain's Role:** - Control centers in the brain detect increased body temperature through receptors. - The brain responds by increasing the stimulation of sweat glands and relaxing blood vessels in the skin. - **Sweat Glands and Blood Vessels:** - Sweat glands produce sweat. - Blood vessels in the skin dilate, facilitating heat loss through the skin surface to lower the body temperature back to its set point. 3. **Return to Homeostasis:** - As body temperature returns to normal, the process cycles back to homeostasis. 4. **Response to Decreased Body Temperature:** - **Brain's Role:** - Control centers in the brain detect decreased body temperature. - The brain decreases stimulation of sweat glands and constricts blood vessels in the skin. - **Sweat Glands and Skeletal Muscles:** - Sweat glands cease sweat production. - Blood vessels constrict to reduce heat loss. - Skeletal muscles may contract (shivering) to generate heat. 5. **Return to Homeostasis:** - As body temperature increases back to the normal range, the process cycles back to homeostasis. ### Explanation: This thermoregulatory process involves feedback mechanisms aimed at either dissipating excess heat or conserving heat to stabilize internal conditions. The brain acts as a critical control center, regulating physiological responses through changes in sweat production, blood vessel dilation, and muscle activity. These responses are essential for maintaining a stable internal environment, crucial for optimal enzyme function and overall metabolic processes.
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