What is Life? A Guide to Biology
3rd Edition
ISBN: 9781464135958
Author: Jay Phelan
Publisher: W.H. Freeman & Co
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 23, Problem 15SA
Summary Introduction
To review:
The structure of the myofibrils in the skeletal muscle, and the changes that occur in them to make contraction possible.
Introduction:
Myofibrils are the organelles that make up a muscle fiber.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Describe the protein structures involved in muscle contraction.
Describe what is meant by muscle fiber "cross-bridges". What occurs to enable movement of the cross-bridges?
Describe the protein structures involved in muscle contraction. Illustrate
Chapter 23 Solutions
What is Life? A Guide to Biology
Ch. 23 - Prob. 1SACh. 23 - Prob. 2SACh. 23 - Prob. 3SACh. 23 - Prob. 4SACh. 23 - Prob. 5SACh. 23 - Prob. 6SACh. 23 - Prob. 7SACh. 23 - Prob. 8SACh. 23 - Prob. 9SACh. 23 - Prob. 10SA
Ch. 23 - Prob. 11SACh. 23 - Prob. 12SACh. 23 - Prob. 13SACh. 23 - Prob. 14SACh. 23 - Prob. 15SACh. 23 - Prob. 16SACh. 23 - Prob. 17SACh. 23 - Prob. 18SACh. 23 - Prob. 19SACh. 23 - Prob. 20SACh. 23 - Prob. 1MCCh. 23 - Prob. 2MCCh. 23 - Prob. 3MCCh. 23 - Prob. 4MCCh. 23 - Prob. 5MCCh. 23 - Prob. 6MCCh. 23 - Prob. 7MCCh. 23 - Prob. 8MCCh. 23 - Prob. 9MCCh. 23 - Prob. 10MCCh. 23 - Prob. 11MCCh. 23 - Prob. 12MCCh. 23 - Prob. 13MCCh. 23 - Prob. 14MCCh. 23 - Prob. 15MCCh. 23 - Prob. 16MC
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What is the function of the sarcoplasmic reticulum in muscle cell contraction?arrow_forwardHow do actin and myosin interact in a sarcomere to bring about muscle contraction? What roles do ATP and calcium play?arrow_forwardIn the diagram below, label the fine structure of a muscle, down to one of its myofibrils. Identify the basic unit of contraction in a myofibril.arrow_forward
- What is a motor unit? Why does a rapid series of muscle twitches yield a stronger overall contraction than a single twitch?arrow_forwardFigure 38.37 Which of the following statements about muscle contraction is true? The power stroke occurs when ATP is hydrolyzed to ADP and phosphate. The power stroke occurs when ADP and phosphate dissociate from the myosin head. The power stroke occurs when ADP and phosphate dissociate from the actin active site. The power stroke occurs when Ca2+ binds the calcium head.arrow_forwardDistinguish between skeletal, smooth, and cardiac muscle in terms of location and whether they have sarcomeres. Use the sliding filament model to draw how thin filaments, thick filaments, and Z lines move during muscle contraction. Predict how perturbations of acetylcholine release, reception, or breakdown will influence muscle contraction. Predict how perturbations of actin, troponin, tropomyosin, myosin, or calcium would influence muscle contraction. Distinguish between the sympathetic and parasympathetic nervous system. Predict how changes in stress levels or situations would affect activation of the sympathetic and parasympathetic nervous system, levels of epinephrine and norepinephrine, and blood pressure.arrow_forward
- Describe the microscopic structure and functional roles of the myofibrils, sarcoplasmic reticulum, and T tubules of skeletal muscle fibers.arrow_forwardSkeletal muscle cells undergo contractions based on a molecular mechanism involving: 1)the sliding of actin and myosin filaments past each other without any change in filament length 2) the shortening of actin filaments following direct interaction with myosin 3) dynamic instability of microtubules 4)nonearrow_forwardDraw a graph of the isometric force–length relationshipof striated muscle, indicating where maximal overlap betweenactin and myosin filaments occurs.arrow_forward
- Describe the structural relationships among the following in aresting skeletal muscle fiber: A band, H zone, M line.arrow_forwardDescribe the structure of the sarcomere and explain how it enables muscle contraction according to the sliding-filament model.arrow_forwardWhat two types of microfilament make up the muscle sarcomere? Which motor protein is primarily involved in muscle contraction?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
GCSE PE - ANTAGONISTIC MUSCLE ACTION - Anatomy and Physiology (Skeletal and Muscular System - 1.5); Author: igpe_complete;https://www.youtube.com/watch?v=6hm_9jQRoO4;License: Standard Youtube License