Human Anatomy
9th Edition
ISBN: 9780135168059
Author: Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon
Publisher: Pearson Education, Inc.,
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Chapter 23, Problem 15RQ
Summary Introduction
To determine:
The most accurate statement for smooth muscles.
Introduction:
Smooth muscles are found in the walls of internal organs such as the urinary bladder, uterus, and intestine. They are found in the eye iris, respiratory and circulatory system. They are present as fibers with an elongated shape in the walls of the digestive alimentary canal. Their contraction is controlled by the nervous system, which helps in the process of peristalsis and segmentation
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Which of the following statements about smooth muscle is false? (a) Smooth muscle cells are called fibers. (b) Most smooth muscle cells, like cardiac muscle cells, are joined by gap junctions. (c) Smooth muscle cells have a single, centrally located nucleus. (d) Contraction of smooth muscle is stimulated exclusively by involuntary nerves. (e) Smooth muscle tissue found in the wall of hollow organs is arranged in sheets.
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?
Large muscle fibers that are multinucleated, striated, and voluntary are found in (a) cardiac muscle tissue. (b) skeletal muscle tissue. (c) smooth muscle tissue. (d) a, b, and c are correct.
Chapter 23 Solutions
Human Anatomy
Ch. 23 - Where in the alimentary canal does propulsion...Ch. 23 - Differentiate the abdominal cavity from the...Ch. 23 - Identify all the mesenteries that connect to each...Ch. 23 - Prob. 4CYUCh. 23 - Name the three sublayers of the mucosa. Which...Ch. 23 - Name the tissue layer of the alimentary canal that...Ch. 23 - Contrast smooth muscle to skeletal muscle, noting...Ch. 23 - What type of epithelium forms the mucosa lining...Ch. 23 - Name the three major salivary glands. What...Ch. 23 - Prob. 10CYU
Ch. 23 - How does the epithelial lining change from the...Ch. 23 - Describe the location of the stomach in reference...Ch. 23 - What do chief cells produce? What do parietal...Ch. 23 - Prob. 14CYUCh. 23 - Name all the parts of the large intestine,...Ch. 23 - Name the structures within the villus that receive...Ch. 23 - Name the vessels and ducts that pass through the...Ch. 23 - Trace the path of blood drained from the digestive...Ch. 23 - Prob. 19CYUCh. 23 - Why is it so important to wash your hands after...Ch. 23 - Which embryonic germ layer forms the epithelium of...Ch. 23 - What blood vessel supplies the structures derived...Ch. 23 - Which of the following organs is secondarily...Ch. 23 - Prob. 2RQCh. 23 - For each organ in the left-hand column, select the...Ch. 23 - Match each of the mesenteries in the key with the...Ch. 23 - Prob. 5RQCh. 23 - Prob. 6RQCh. 23 - Which of the following correctly describe the flow...Ch. 23 - The exocrine glands in the pancreas are (a) simple...Ch. 23 - Prob. 9RQCh. 23 - Which one of the following features is shared by...Ch. 23 - Prob. 11RQCh. 23 - Prob. 12RQCh. 23 - Protein digestion begins (a) in the mouth by...Ch. 23 - The calcified connective tissue that attaches the...Ch. 23 - Prob. 15RQCh. 23 - Prob. 16RQCh. 23 - The salivary gland that contains only serous cells...Ch. 23 - Use the key below to indicate the blood vessel...Ch. 23 - Make a simple drawing of the organs of the...Ch. 23 - Name the layers of the wall of the alimentary...Ch. 23 - (a) Write the dental formulas for both the...Ch. 23 - Bianca went on a trip to the Bahamas during spring...Ch. 23 - (a) Make a rough sketch of the Visceral surface of...Ch. 23 - Name four structural features that increase the...Ch. 23 - (a) List the three major vessels of the portal...Ch. 23 - Of the three major salivary glands, which is the...Ch. 23 - Trace the entire duct systems of the liver and...Ch. 23 - Prob. 28RQCh. 23 - Prob. 29RQCh. 23 - Prob. 30RQCh. 23 - Prob. 31RQCh. 23 - This chapter describes schemes that divided the...Ch. 23 - A 21-year-old man with severe appendicitis did not...Ch. 23 - Duncan, an inquisitive 8-year-old, saw his...Ch. 23 - Eva, a middle-aged attorney, complains of a...Ch. 23 - Prob. 5CRCAQCh. 23 - The janitor who cleaned the anatomy lab had a...Ch. 23 - Explain why cancer chemotherapies that stop the...Ch. 23 - From what embryonic layer (ectoderm, mesoderm, or...Ch. 23 - Name the three major salivary glands. What...Ch. 23 - Rebound tenderness in the lower right quadrant of...
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- In a general sense, how do skeletal muscles produce movement?arrow_forwardA skeletal muscle contains, (a) connective tissues. (b) blood vessels and nerves.(c) skeletal muscle tissue. (d) a, b, and c are correctarrow_forwardIn skeletal muscle, the sarcolemma is directly covered by: a) epimysium. b) perimysium. c) endomysium.arrow_forward
- Slow twitch muscle fibers are characterized by all of the following EXCEPT: O a) used in endurance type of activities O b) contract rapidly and forcefully Oc) resistant to fatigue O d) have a direct relationship to the oxidative energy systemarrow_forward20) which of following is true regarding skeletal muscle cells? a) All of these are properties of skeletal muscle cells b) they are striated c) they have many mitochondria d) they contain multiple nucleiarrow_forwarda) At what time point would a muscle begin to fatigue? Comment on the percentage decrease in contraction force by the end of a stimulus. b) Provide a possible mechanism for why would a muscle won't be able to maintain a prolonged contraction. c) Would the results be different if it was from smooth muscle tissue? Why?arrow_forward
- Which is true for striated muscles? a) may have spontaneous activity b) is not under the control of the will c) many cell nuclei, located below the membrane, in each muscle fiber.arrow_forwardCardiac muscle differs from smooth and skeletal muscle because.... It is composed of long and cylindrical fibers, each of which has multiple nuclei. It is composed of a branching network of fibers and is only found in vertebrates. It typically contracts more rapidly than skeletal or smooth muscle. It is composed of long and cylindrical fibers with one nucleus per cell. It is composed of a branching network protected by chitin.arrow_forwardWhich of the following statements is unique to skeletal muscle? O a) skeletal muscle has striations O b) skeletal muscle is attached to bones O c) skeletal muscle is under voluntary control O d) skeletal muscle is multinucleated O all of the above O b, c, & d but not aarrow_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_forwardSmooth muscle has actin/myosin, why is it not striated? (consider what striation can provided)arrow_forwardDescribe a typical smooth muscle cell. How do itsstructure and its contraction process differ from those ofskeletal muscle fibers?arrow_forward
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