Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
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Chapter 10, Problem 15RQ
Cindy Wong was a good anatomy student, but she realized she was mixing up the following "sound-alike" structures in skeletal muscle: myofilaments, myofibrils, fibers, and fascicles. Therefore, she compiled a brief table to define and differentiate these four structures. Construct a table like hers.
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Students have asked these similar questions
Skeletal muscle has several distinct fiber types. Type I is used primarily for aerobic activity, whereas type II b is specialized for short, intense bursts of activity. How could you distinguish between these types of muscle fiber if you viewed them with an electron microscope?
Skeletal muscle has several distinct fiber types. Type I is used primarily for aerobic activity, whereas type IIb is specialized for short, intense bursts of activity. How could you distinguish between these types of muscle fiber if you viewed them with an electron microscope?
One of the primary characteristics of all muscle tissue is contractility, the ability to shorten
(contract) and lengthen (relax). You've identified the various components of a myofibril above.
Now, use the table below to indicate what occurs to each band, line, or zone when the muscle
contracts vs. relaxes.
What occurs to this region / structure during contraction/relaxation?
Region / Structure
A-Band
H-Band
I-Band
M-Line
Z-Line
Zone of Overlap
Sarcomere
No change
Shortens
Lengthens
Muscle Contraction
Muscle Relaxation
Chapter 10 Solutions
Human Anatomy
Ch. 10 - What structural similarities are shared by all...Ch. 10 - Prob. 2CYUCh. 10 - Prob. 3CYUCh. 10 - What are the functional definitions of the origin...Ch. 10 - Place the following structures in order from...Ch. 10 - Which myofilaments are found only in the A band?Ch. 10 - Prob. 7CYUCh. 10 - Prob. 8CYUCh. 10 - Prob. 9CYUCh. 10 - Prob. 10CYU
Ch. 10 - Prob. 11CYUCh. 10 - Prob. 12CYUCh. 10 - Prob. 13CYUCh. 10 - Prob. 14CYUCh. 10 - The connective tissue that lies just outside the...Ch. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Prob. 4RQCh. 10 - Prob. 5RQCh. 10 - Prob. 6RQCh. 10 - Prob. 7RQCh. 10 - Prob. 8RQCh. 10 - Prob. 9RQCh. 10 - Prob. 10RQCh. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - Define motor unit.Ch. 10 - List the structural differences between the three...Ch. 10 - Cindy Wong was a good anatomy student, but she...Ch. 10 - Prob. 16RQCh. 10 - Prob. 17RQCh. 10 - Where is titin located, and what are its...Ch. 10 - What is the general distribution of skeletal...Ch. 10 - Prob. 1CRCAQCh. 10 - Prob. 2CRCAQCh. 10 - Chickens are capable of only brief bursts of...Ch. 10 - Takashi, an osteopathic physician, saw that Mrs....Ch. 10 - Why are muscle infections relatively rare...Ch. 10 - As a sprinter, Lateesha knew that the best way to...Ch. 10 - Prob. 7CRCAQCh. 10 - Prob. 8CRCAQCh. 10 - Prob. 9CRCAQ
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- can someone help me identify what each of the numbers are labeled as? specifically anything that is muscle Thank you so much!.arrow_forwardWhich of the following are aspects of the structure of skeletal muscle? Select all that apply. --They are cylindrical cells called muscle fibers that have multiple nuclei. --Skeletal muscle has more mitochondria than other types of muscle cells. --The muscle fibers parallel one another and have a striated appearance. --Cells are branched or unbranched with single nuclei. --Each fiber contains stacks of many units of contraction and protein filaments.arrow_forwardList the Histological (structural and shape) differences between skeletal, smooth and cardiac muscle. Remember, the cells are "designed" and "developed" in a manner that mandated that their "shape absolutely "fit" their function.arrow_forward
- Watch this video (http://openstaxcollege.org/l/micromacro) to learn more about macro- and microstructures of skeletal muscles. (a) What are the names of the “junction points” between sarcomeres? (b) What are the names of the “subunits” within the myofibrils that run the length of skeletal muscle fibers? (c) What is the “double strand of pearls” described in the video? (d) What gives a skeletal muscle fiber its striated appearance?arrow_forward(1) The reading for today (Lieber and Ward, 2011) and your textbook describe the length-tension relationship of muscle, which can be explained by the figure below. Describe physiologically what is happening to explain the length-tension relationship, as shown by this figure. (a) 120 maximum tension (%) 100 80 60- 40 20 0 1.0 1.5 2.0 active (3) passive 2.5 3.0 3.5 4.0 length (um)arrow_forward3) Paula is a scientist who is developing a drug called Fremtol that will be used to treat muscle spasms. This drug acts on specific skeletal muscles to (1) block the release of Ca2+ ions from the sarcoplasmic reticulum, (2) inhibit the pivoting ability of the myosin heads of the thick filaments, and (3) block the production of ATP by the mitochondria in skeletal muscles. By using this drug, contraction of certain skeletal muscle fibers is reduced, which keeps those muscles from producing spasms. In the above scenario, Fremtol’s effect of blocking muscle mitochondrial ATP production would result in the inability of the muscle to make ATP from ___________. a. creatine phosphate b. anaerobic glycolysis c. aerobic respiration d. All of the above e. None of the abovearrow_forward
- 2) Paula is a scientist who is developing a drug called Fremtol that will be used to treat muscle spasms. This drug acts on specific skeletal muscles to (1) block the release of Ca2+ ions from the sarcoplasmic reticulum, (2) inhibit the pivoting ability of the myosin heads of the thick filaments, and (3) block the production of ATP by the mitochondria in skeletal muscles. By using this drug, contraction of certain skeletal muscle fibers is reduced, which keeps those muscles from producing spasms. In the above scenario, Fremtol’s effect of blocking the release of Ca2+ ions from the sarcoplasmic reticulum would most directly prevent which the following? a. activation of tropomyosin b. activation of troponin c. activation of actin d. All of the above e. None of the abovearrow_forward3) List and define the organizational structure of skeletal muscle beginning with the sacrcomere up ABC to a whole muscle. 4) Explain the differences between the zones and bands of a sarcomere. 5) List and explain the differences between contractile and non-contractile proteins. 6) What are the agonists, synergists, and antagonists to go from sitting to standing from a chair. 7) Provide an every day example of each of the 3 types of muscle actions. Name the muscle involved as well as the movement. 8) Why do we store energy as ATP and resynthesize it, instead of just storing all we need. 9) What are the differences between resting, steady state, and maximal metabolic rate? 10) Why would someone measure arm circumference? How would that be helpful? 11) MRI results in a grayscale of 0 (black) to 256 (white) for each pixel of tissue. How do we tell the difference between different types of tissue in the cross section of a limb (arm or leg, e.g. what's the difference between muscle and fat,…arrow_forwardplease give a step by step simple and easy to understand explaination referencing the skeletal muscle. Please mention what is happening at each step and number it please . for example 1..... 2...... 3..... 4...... 5....arrow_forward
- The structural organization of muscle fibers makes it possible to produce contractile force. a. What is the fundamental contractile unit of skeletal muscle? b. What are the names of the bands, lines and zone of the contractile unit of skeletal muscle? c. Each of the contractile unit region names in (b) contains a letter. What does each of these letters stand for? d. What changes occur in the contractile unit regions during contraction?arrow_forwardCan you match the sacromere anatomy with the proper answer from the list below the table graph? Sarcomere Anatomy Description/Reaction Thin Filaments ? Thick Filaments ? A Band ? I Band ? M Line ? H Zone ? Z Disc ? A) G-Actin, F-Actin, Troponin, Tropomyosin B) Myosin C) Bisected by the M Line, this area shows only the thick filaments without any thin filamentous overlap D) The point of origin for myosin filaments found in the center of the sarcomere E) An area in the center of the sarcomere marked by the entire length of the thick filaments F) A space between sarcomeres with the z-disc in the center; this region shows Actin's anchorage points and extension without myosin overlap G) Anchoring point for the thin filamentsarrow_forwardSelect the best answer or answers from the choices given: The function of the T tubules in muscle contraction is to (a) make and store glycogen, (b) release Ca2+ into the cell interior and then pick it up again, (c) transmit the action potential deep into the muscle cells, (d) form proteinsarrow_forward
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