BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 41, Problem 4U
Summary Introduction
Introduction:
Skeletal muscle cells are arranged in bundles tied together by connective tissues and anchored at both the ends by tendons to bones and other supporting tissues. These muscles are very long, cylindrical and multinucleated. The striation reflects the regular pattern of distribution of the filaments inside the cells and multiple nuclei is located on the periphery of the cells.
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Skeletal muscle and cardiac muscle are similar in that both types of muscle a. have cells that branch. b. contain intercalated discs. c. are under involuntary control. d. are striated.
Skeletal muscle is composed of very hard workingcells. Which organelles do you expect to find in abundancein skeletal muscle cell?a. nucleib. striationsc. golgi bodiesd. mitochondria
Which of the following characteristics does not apply to skeletal muscle tissue?
a.
striated
b.
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c.
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All of the above are correct
Chapter 41 Solutions
BIOLOGY
Ch. 41.1 - Prob. 1LOCh. 41.1 - Prob. 2LOCh. 41.2 - Prob. 1LOCh. 41.2 - Prob. 2LOCh. 41.2 - Prob. 3LOCh. 41.3 - Prob. 1LOCh. 41.3 - Differentiate among forms of connective tissue.Ch. 41.3 - Prob. 3LOCh. 41.4 - Prob. 1LOCh. 41.4 - Prob. 2LO
Ch. 41.5 - Prob. 1LOCh. 41.5 - Prob. 2LOCh. 41.6 - Prob. 1LOCh. 41.6 - Explain the functional organization of these...Ch. 41.7 - Explain homeostasis.Ch. 41.7 - Prob. 2LOCh. 41.7 - Prob. 3LOCh. 41.8 - Prob. 1LOCh. 41.8 - Prob. 2LOCh. 41.8 - Prob. 3LOCh. 41 - Data analysis What does this graph predict about...Ch. 41 - Prob. 2DACh. 41 - Prob. 1IQCh. 41 - Epithelial tissues do all of the following except...Ch. 41 - Prob. 2UCh. 41 - Connective tissues include a diverse group of...Ch. 41 - Prob. 4UCh. 41 - Prob. 5UCh. 41 - The function of neuroglia is to a. carry messages...Ch. 41 - Skeletal muscle cells are a. large multinucleate...Ch. 41 - Connective tissues, although quite diverse in...Ch. 41 - Prob. 1ACh. 41 - Prob. 2ACh. 41 - Suppose that an alien virus arrives on Earth. This...Ch. 41 - Homeostasis a. is a dynamic process. b. describes...Ch. 41 - Prob. 5ACh. 41 - The three types of muscle all share a. a structure...Ch. 41 - Suppose that you discover a new disease that...Ch. 41 - Which organ systems are involved in regulation and...Ch. 41 - We have all experienced hunger pangs. Is hunger a...Ch. 41 - Why is homeostasis described as a dynamic process?...
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Similar questions
- Cardiac muscle cells differ from skeletal muscle cells because: a. They can respond to neurotransmitters.b. They are striated.c. They contain intercalated discs and gap junctions.d. They require calcium for contraction.arrow_forwardWhich of the following statements is true? a.Cardiac muscle cells are found in the heart and large blood vessels. b.Cardiac muscle cells have many nuclei. c.Striated muscle cells are long and cylindrical with many nuclei. d.Smooth muscle cells have T tubules.arrow_forwardWhich of the following statements relating to smooth muscle is true? a. single-unit smooth muscles contract rhythmically due to gap junctions b. multi-unit smooth muscles are arranged like skeletal muscle motor units c. visceral smooth muscles exhibit spontaneous action potentials d. multi-unit smooth muscles exhibit graded contractions in response to neural stimuli e. all of the abovearrow_forward
- In muscle cells, myosin molecules continue moving along actin molecules as long as: A. ATP is present and intracellular Ca2+ is high. B. ADP is present and intracellular acetylcholine is high. C. ATP is present and troponin is not bound to Ca2+. D.ATP is present and intracellular Ca2+ is low. E. ADP is present and tropomyosin is released from intracellular stores. QUESTION 27 Lamellipodia and filopodia frequently occur near the edges of cells. These membrane features: A. are supported by intermediate filaments, such as keratin. B. result from the polymerization of actin filaments. C. result from the contraction of actin-myosin. D. probably do not serve any useful purpose to the cell. E. are directly linked to the microtubule organizing center. QUESTION 28 Sort the following events to reflect the sequence during smooth muscle contraction upon delivery of muscle stimu 3. Activation of the myosin light-chain kinase 5. Interaction of myosin head with actin 4. Phosphorylation of myosin 1.…arrow_forwardYou know from experience that skeletal muscle tires quite quickly, especially if there is not enough oxygen. Interestingly, shellfish such as clams can maintain a month-long contraction in the muscle that keeps the shell closed. No oxygen gets in this situation. These muscles have a different version of myosin called paramyosin. Knowing what you know about the cellular mechanism of muscle contraction, propose a hypothesis to explain how paramyosin might work.arrow_forwardWhich of the following describes a similarity between cardiac and smooth muscle cells?a. An action potential always precedes contraction.b. The majority of the Ca21 that activates contraction comes from theextracellular fluid.c. Action potentials are generated by slow waves.d. An extensive system of T-tubules is present.e. Ca21 release and contraction strengths are gradedarrow_forward
- Which of the following statements is true of the chameleon tongue but not of the human tongue? A. It is a muscular hydrostat. B. Force generation reflects the binding of myosin crossbridges to actin thin filaments. C. The organization of the actin and myosin filaments produces a regular pattern of bands, or striations. D. Gaps or holes in the Z-discs allow supercontraction (shortening beyond the normal limit). E. All of the above statements are true of both the chameleon tongue and the human tongue.arrow_forwardThe functions of tropomyosin in skeletal muscle include A. releasing calcium ions after initiation of contraction. B. generating ATP which it passes to the contractile mechanism. C. binding to myosin during contraction. D. acting as a relaxing protein at rest by covering up the sites where myosin binds to actin. E. sliding on actin to produce shortening.arrow_forwardWhich of the following statements relating to the developmental aspects of muscles is false? a. All muscle tissue types arise from myoblasts b. Skeletal muscles become amitotic while smooth muscles regenerate throughout life c. Sarcopenia begins by age 30 and is irreversible d. Body strength per unit muscle mass is the same in both sexes e. none of the above Which of the following structures is located in the head region of the thick filament myosin? a. actin binding site b. ATP binding site c. ATPase enzyme d. all of the above e. none of the abovearrow_forward
- Calmodulin is found in smooth muscle cells and performs a similar function to troponin in striated muscle fibers. However, calmodulin not only gets activated by Ca2+ but also slows the release of Ca2+ from the sarcoplasmic reticulum. How might this difference relate to the different kinds of contractions smooth muscles do in comparison to striated muscles?arrow_forwardAll of the following characteristics apply to skeletal muscle except a. They are striated. b. They are multinucleated. c. They are voluntary. d. They contain intercalated discs. e. They are attached to the skeleton by means of tendons.arrow_forwardWhat do skeletal muscle contractions share in common with smooth muscle contractions?a. Both types of contractions do not require calcium ions for a contraction to occur.b. Both types of contractions generate little force or a weak force.c. Both types of contractions consume very little ATP.d. Both types of contractions result from thick and thin filaments sliding past one another.arrow_forward
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