When your body mounts a sympathetic response, it causes the smooth muscle in your bronchioles to relax and dilate (get wider). By contrast, a parasympathetic response causes the smooth muscles in your bronchioles to contract and constrict (get narrower). This seems strange because fight-or-flight responses seem like they should upregulate activity and cause more contractions. A benefit of bronchiole dilation during fight or flight responses is that it
When your body mounts a sympathetic response, it causes the smooth muscle in your bronchioles to relax and dilate (get wider). By contrast, a parasympathetic response causes the smooth muscles in your bronchioles to contract and constrict (get narrower). This seems strange because fight-or-flight responses seem like they should upregulate activity and cause more contractions. A benefit of bronchiole dilation during fight or flight responses is that it
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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Question: When your body mounts a sympathetic response, it causes the smooth muscle in your bronchioles to relax and dilate (get wider). By contrast, a parasympathetic response causes the smooth muscles in your bronchioles to contract and constrict (get narrower). This seems strange because fight-or-flight responses seem like they should upregulate activity and cause more contractions.
A benefit of bronchiole dilation during fight or flight responses is that it...(see image)
Transcribed Image Text:**Oxygen Transport and Exchange**
**YES**
- **Facilitates Oxygen Transfer**: It makes it easier to move O₂ from hemoglobin into tissues.
- **Blood Oxygen Transfer Difficulty**: It makes it harder to squeeze O₂ into the blood.
- **Alveolar Oxygen Flow**: Allows more O₂ to flow down into your alveoli.
In this diagram, there are no graphs or visual data, just informational points summarizing aspects of oxygen transport and exchange in the human body.
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