Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 29, Problem 5MCQ
Summary Introduction
Introduction:
The muscle fibers are composed of thick myosin filaments and thin actin filaments. The arrangement of the bundles of these filaments is called as a sarcomere. They form synapses at the neuromuscular junctions with the motor neurons. This initiates in the conduction of the impulses in the neurons.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Which of the following is arranged in order from smallest tolargest?a. Motor unit < sarcomere < muscle cell < actin subunitb. Muscle cell < actin subunit < sarcomere < motor unitc. Actin subunit < sarcomere < muscle cell < motor unitd. Sarcomere < motor unit < actin subunit < muscle cell
Which of the following statements best describes the sliding filament mechanism of muscle contraction?
a. Actin and myosin filaments do not shorten, but rather, slide past each other.
b. Actin and myosin filaments shorten and slide past each other.
c. As they slide past each other, actin filaments shorten, but myosin filaments do not shorten.
d. As they slide past each other, myosin filaments shorten, but actin filaments do not shorten.
Contraction of muscles requires binding of various components of muscle fiber. Which of the following rows correctly matches two components of muscle fibre that bind with each other?
Row
Component of muscle fibre
Component of muscle fibre
A.
Ca2+
myosin
B.
troponin
myosin
C.
troponin
tropomyosin
D.
actin
Ca2+
Chapter 29 Solutions
Biology: Concepts and Investigations
Ch. 29.1 - How do the skeletal and muscular systems interact?Ch. 29.1 - Prob. 2MCCh. 29.2 - What are the components of the axial and...Ch. 29.2 - Prob. 2MCCh. 29.3 - Prob. 1MCCh. 29.3 - What are the differences between spongy bone and...Ch. 29.3 - Prob. 3MCCh. 29.3 - Prob. 4MCCh. 29.3 - Prob. 5MCCh. 29.4 - Prob. 1MC
Ch. 29.4 - Prob. 2MCCh. 29.4 - How do ATP, motor neurons, and calcium ions...Ch. 29.5 - Prob. 1MCCh. 29.5 - Prob. 2MCCh. 29.6 - Prob. 1MCCh. 29.6 - Prob. 2MCCh. 29.6 - Prob. 3MCCh. 29.7 - Prob. 1MCCh. 29.7 - Prob. 2MCCh. 29 - Prob. 1MCQCh. 29 - The axial skeleton is to the appendicular skeleton...Ch. 29 - Prob. 3MCQCh. 29 - Prob. 4MCQCh. 29 - Prob. 5MCQCh. 29 - Prob. 6MCQCh. 29 - Prob. 1WIOCh. 29 - Prob. 2WIOCh. 29 - Prob. 3WIOCh. 29 - Prob. 4WIOCh. 29 - Prob. 5WIOCh. 29 - Prob. 6WIOCh. 29 - Describe four muscle proteins and their functions.Ch. 29 - Prob. 8WIOCh. 29 - Prob. 9WIOCh. 29 - Prob. 10WIOCh. 29 - Write the sequence of events that leads to a...Ch. 29 - Prob. 12WIOCh. 29 - Refer to figure 29.24 and the chapter content to...Ch. 29 - 3. Add exercise to the concept map in at least...
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
- Which component is responsible for initially stimulating a muscle contraction? a. proteins b. electrochemical signals c. plasma membranes d. striationsarrow_forwardWhich of the following sentences is NOT correct? A. White fibers make up fast-twitch muscle B. Muscle spindle is a type of receptor that detects muscle length C. Exocrine gland secretes its product directly into the bloodstream D. When an action potential is generated within a motor neuron, every muscle cell of the motor unit is stimulated to contractarrow_forwardWhich of the following is the site of calcium ion storage within muscles? a. T tubules b. sarcoplasmic reticulum c. actin filaments d. myosin filamentsarrow_forward
- The mechanism of muscle contraction is best explained by the sliding filament model. According to this model, thin ___i___ filaments slide over thick ___ii___ filaments.The statement given above is completed by information in row Row i ii A. myosin actin B. myosin myosin C. actin actin D. actin myosinarrow_forwardWhich of the following changes takes place when a skeletal muscle contracts?A. Z discs move farther apart.B. Actin filaments contract.C. Myosin filaments contract.D. Sarcomeres become shorter.arrow_forwardWhen sarcomeres contract during muscle contraction, which of the following occurs? A. The myosin filaments lengthen. B. The myosin filaments "walk" along the actin microfilaments. C. The myosin filaments shorten. D. The actin filaments shorten.arrow_forward
- Which of the following could prevent skeletal muscle from contracting? Select one or more: a. Preventing calcium from surrounding myofibrils. b. Maintaining high levels of calcium around myofibrils c. Preventing sodium from entering a cell d. Allowing constant entry of sodium into a cellarrow_forwardWhich of the following lists the structures from largest to smallest?a. motor unit, muscle, myofibril, muscle fiber, thick and thin filamentsb. muscle, muscle cell, myofibril, muscle fiber, actin and myosinc. muscle cell, thick and thin filaments, sarcomere, myofibrild. muscle, muscle fiber, myofibril, thick and thin filamentsarrow_forwardWhich protein is not part of the thin filament in a muscle fiber? A. Actin B. Myosin C. Tropomyosin D. Troponinarrow_forward
- During muscle contraction, calicum ions bind to A. Actin Filaments B. Tropomyosin C. Troponin D. Myosin Filamentsarrow_forwardThe Sarcomere 2 Thin filaments are often named for which protein? a. actin b. myosin c. troponin d. tropomyosinarrow_forwardWhich of the following statements about the connective sheath of skeletal muscle is false? a. the endomysium wraps around every single muscle fiber b. the perimysium wraps around groups of muscle fibers c. the epimysium wraps around the whole muscle organ d. all of the above e. none of the abovearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Comprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Comprehensive Medical Assisting: Administrative a...
Nursing
ISBN:9781305964792
Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa
Publisher:Cengage Learning
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