EBK HUMAN BIOLOGY
11th Edition
ISBN: 8220100545931
Author: MCMILLAN
Publisher: Cengage Learning US
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Chapter 6, Problem 2SQ
Summary Introduction
Introduction: The skeletal system is composed of bones, cartilage, and connective tissues such as ligaments and tendons. In an adult, 40 to 50 % of the body weight is contributed by skeletal muscle. It is primarily attached to the skeleton of the body.
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A smooth, sustained contraction from rapid stimulation of skeletal muscle fibers is called ________.
Smooth muscle is characterized by all of the following except _______.
Group of answer choices
has caveolae to sequester extracellular calcium
is usually in two layers circular and longitudinal to contract and relax hollow organs
there are noncontractile intermediate filaments that attach to dense bodies within the cell
neuromuscular junction
has no sarcomeres or T-tubules
The 2 main proteins in muscle cells are _______ and ___
Chapter 6 Solutions
EBK HUMAN BIOLOGY
Ch. 6 - In a general sense, how do skeletal muscles...Ch. 6 - In the diagram below, label the fine structure of...Ch. 6 - How do actin and myosin interact in a sarcomere to...Ch. 6 - How does a muscle fiber incur an oxygen debt?Ch. 6 - What is the function of the sarcoplasmic reticulum...Ch. 6 - Explain why (a) calcium ions and (b) ACh are vital...Ch. 6 - What is a motor unit? Why does a rapid series of...Ch. 6 - What are the structural and functional differences...Ch. 6 - Prob. 1SQCh. 6 - Prob. 2SQ
Ch. 6 - Prob. 3SQCh. 6 - The _____ is the basic unit of muscle contraction....Ch. 6 - Skeletal muscle contraction requires _________. a....Ch. 6 - Nerve impulses first stimulate a skeletal muscle...Ch. 6 - Prob. 7SQCh. 6 - Prob. 8SQCh. 6 - Prob. 9SQCh. 6 - Prob. 10SQCh. 6 - You are training athletes for the 100-meter dash....Ch. 6 - Prob. 2CTCh. 6 - Prob. 3CTCh. 6 - At the gym Sean gets on a stair-climbing machine...
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- Histological Description of different types of muscle tissues: Smooth muscle Skeletal muscle Cardiac musclearrow_forwardWhich of the following muscle tissue is voluntary?arrow_forwardWhich is not one of the four properties of skeletal muscle tissue? Group of answer choices Elasticity Reversibility Irritability Extensibilityarrow_forward
- Skeletal muscle is associated to the _________________. What makes up the muscle fiber?arrow_forwardFill in the blank: Muscle fiber contraction and nerve impulse conduction are similar in that both are _______________________responses.arrow_forwardSmooth muscle tissue is involuntary in function. True Falsearrow_forward
- Necrotizing fasciitis is a serious bacterial infection. Necrosis is the death of tissues in the body. Considering the organization of the connective tissue sheaths of skeletal muscle, explain how this infection could spread rapidly throughout the body.arrow_forwardSmooth muscle has spindle-shaped cells that have only one spiral nucleus and the tissue is not striated. True Falsearrow_forwardA _____________ is a bundle of muscle fibers and is surrounded by connective tissue called ______________.arrow_forward
- Skeletal muscle cell(key terms: striated, contracting proteins, contractions, nucleus location) This feature of the muscle cell helps to do its job becausearrow_forwardTrue or False: Smooth muscle cells are long, cylindrical cells, each containing many nuclei located at the periphery of the cell.arrow_forwardItem 27 Item 27 Which may occur as a result of muscle atrophy? Multiple Choice Reduction in muscle size. Fibers become weaker. Muscle loses tone. Fibers waste away and die. All of the choices are correct.arrow_forward
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