Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 41.1, Problem 1CS
Core Skill: Modeling The goal of this modeling challenge is to draw a model showing how smooth muscle contraction affects the width of a tube such as a bronchiole.
Modeling Challenge: Smooth muscle often surrounds tubelike structures in animal bodies, where it controls the degree to which the tubes are opened. In the disease asthma, smooth muscle tissue in the small air tubes called bronchioles is sometimes in a highly contracted state. Shown below is a model of a fully opened bronchiole in a human. Draw another model of the bronchiole as you think it will appear when the person is experiencing asthmatic symptoms (contracted smooth muscle tissue). Referring to your model, explain why individuals with asthma have difficulty breathing when their symptoms flare up.
A healthy bronchiole in a human lung. Note that the smooth muscle tissue is in a relaxed state, and the bronchiole is fully opened.
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Work 4. Schemes of myocardial sarcomere and organization of fine sarcomere filaments.
Indicate in the picture:
1. Membrane of muscle fibers.
2. Z-disk.
3. T-system.
4. Sarcoplasmic reticulum.
5. Actin filaments
6. Myosin filaments.
Img. 9. Scheme of sarcomere structure of myofibrils of muscle fibers of skeletal muscle.
The thick threads are formed by the contractile protein
Thin threads are formed by contractile protein
Control proteins troponin and tropomyosin are associated with thick or thin threads?
Calcium binding control protein is:
Img. 10. Scheme of the structure of the actin threads.
Indicate in the picture:
1. Actin globules.
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2. Troponin.
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Chapter 41 Solutions
Biology
Ch. 41.1 - Core Skill: Modeling The goal of this modeling...Ch. 41.1 - Prob. 2CSCh. 41.2 - Prob. 1CCCh. 41.3 - Core Skill: Connections Can negative feedback...Ch. 41.3 - What similar feedforward process might occur in an...Ch. 41.4 - Prob. 1CCCh. 41.4 - Prob. 2CCCh. 41.4 - Prob. 3CCCh. 41.4 - Prob. 4CCCh. 41.4 - What symptoms are sometimes seen in athletes after...
Ch. 41.4 - Prob. 2EQCh. 41.4 - Prob. 3EQCh. 41 - Prob. 1TYCh. 41 - Structures composed of two or more tissue types...Ch. 41 - Prob. 3TYCh. 41 - From an examination of the structure of many...Ch. 41 - Prob. 5TYCh. 41 - The folds, convolutions, or extensions found in...Ch. 41 - Prob. 7TYCh. 41 - Prob. 8TYCh. 41 - Prob. 9TYCh. 41 - Prob. 10TYCh. 41 - Prob. 1CQCh. 41 - Define homeostasis, and give examples of...Ch. 41 - Prob. 3CQCh. 41 - Prob. 1COQCh. 41 - Discuss the organization of animal bodies from the...
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