Perspiration, known more commonly as sweating, is an autonomic bodily response that decreases body temperature. During perspiration, the skin will secrete sweat that will ther- moregulate body tissues in certain conditions. Evaporation of sweat from the skin surface has a cooling effect due to evaporative cooling. In addition, the blood vessels will increase in diameter via a process called vasodilation, which will bring them closer to the skin and allow heat to more easily dissipate from the body. 3 increased blood temperature identified by central receptors vasodilation of peripheral vessels and skin arterioles to transfer more heat to the skin surface 5 A diagram of thermoregulation in the human body. (2) hypothalamus receives input and activates SNS response heat leaves the body and blood temperature lowers Respond to each part in 2 to 3 complete sentences. activation of sweat glands to begin sweating (a) Identify the type of feedback loop presented in the diagram. Justify your response. (b) Identify the effect of the inhibition of vasodilation on sweating.
Perspiration, known more commonly as sweating, is an autonomic bodily response that decreases body temperature. During perspiration, the skin will secrete sweat that will ther- moregulate body tissues in certain conditions. Evaporation of sweat from the skin surface has a cooling effect due to evaporative cooling. In addition, the blood vessels will increase in diameter via a process called vasodilation, which will bring them closer to the skin and allow heat to more easily dissipate from the body. 3 increased blood temperature identified by central receptors vasodilation of peripheral vessels and skin arterioles to transfer more heat to the skin surface 5 A diagram of thermoregulation in the human body. (2) hypothalamus receives input and activates SNS response heat leaves the body and blood temperature lowers Respond to each part in 2 to 3 complete sentences. activation of sweat glands to begin sweating (a) Identify the type of feedback loop presented in the diagram. Justify your response. (b) Identify the effect of the inhibition of vasodilation on sweating.
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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Transcribed Image Text:**Perspiration**, known more commonly as **sweating**, is an autonomic bodily response that decreases body temperature. During perspiration, the skin will secrete sweat that will thermoregulate body tissues in certain conditions. Evaporation of sweat from the skin surface has a cooling effect due to evaporative cooling. In addition, the blood vessels will increase in diameter via a process called **vasodilation**, which will bring them closer to the skin and allow heat to more easily dissipate from the body.
**Diagram of Thermoregulation in the Human Body:**
1. **Increased body temperature identified by central receptors**
- The process begins when the body detects an increase in temperature.
2. **Hypothalamus receives input and activates SNS response**
- The hypothalamus, a part of the brain, receives this information and activates the sympathetic nervous system (SNS) response.
3. **Vasodilation of peripheral vessels and skin arterioles to transfer more heat to the skin surface**
- Blood vessels near the skin expand (vasodilate) to allow more blood flow and facilitate heat transfer to the skin.
4. **Activation of sweat glands to begin sweating**
- Sweat glands are activated to release sweat onto the skin's surface.
5. **Heat leaves the body and body temperature lowers**
- As sweat evaporates, it cools the body, lowering the temperature.
**Tasks:**
(a) **Identify** the type of feedback loop presented in the diagram. **Justify** your response.
(b) **Identify** the effect of the inhibition of vasodilation on sweating.
Respond to each part in **2 to 3 complete sentences.**
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