Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Chapter 9.9, Problem 21CYU
MAKING CONNECTIONS Intracellular calcium performs other important roles in the body in addition to triggering muscle contraction. What are these roles? (Hint: See Chapter 3.) the chapter Cells: The Living Units
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Chapter 9 Solutions
Anatomy & Physiology (6th Edition)
Ch. 9.1 - When describing muscle, what does striated mean?Ch. 9.1 - Prob. 2CYUCh. 9.2 - How does the term epimysium relate to the role and...Ch. 9.3 - Which myofilaments have binding sites for calcium?...Ch. 9.3 - Which region or organelle-cytosol, mitochondrion,...Ch. 9.3 - MAKING CONNECTIONS Consider a phosphorus atom that...Ch. 9.4 - What are the three structural components of a...Ch. 9.4 - What is the final trigger for contraction? What is...Ch. 9.4 - What prevents the filaments from sliding back to...Ch. 9.4 - What would happen if a muscle fiber suddenly ran...
Ch. 9.5 - What is a motor unit?Ch. 9.5 - What is happening in the muscle during the latent...Ch. 9.5 - Prob. 13CYUCh. 9.6 - When Eric returned from jogging, he was breathing...Ch. 9.7 - List two factors that influence contractile force...Ch. 9.7 - Prob. 16CYUCh. 9.8 - How do aerobic and resistance exercise differ in...Ch. 9.9 - Compare the structures of skeletal and smooth...Ch. 9.9 - Calcium is the trigger for contraction of all...Ch. 9.9 - How does the stress-relaxation response suit the...Ch. 9.9 - MAKING CONNECTIONS Intracellular calcium performs...Ch. 9 - The connective tissue covering that encloses the...Ch. 9 - Prob. 2MCCh. 9 - Prob. 3MCCh. 9 - Prob. 4MCCh. 9 - Prob. 5MCCh. 9 - Contraction elicited by a single brief stimulus is...Ch. 9 - A smooth, sustained contraction resulting from...Ch. 9 - Characteristics of isometric contractions include...Ch. 9 - During muscle contraction, ATP is provided by (a)...Ch. 9 - The neurotransmitter released by somatic motor...Ch. 9 - The ions that enter the skeletal muscle cell...Ch. 9 - Myoglobin has a special function in muscle tissue....Ch. 9 - Prob. 13MCCh. 9 - The smooth muscle type found in the walls of...Ch. 9 - Name and describe the four special functional...Ch. 9 - Distinguish between (a) direct and indirect muscle...Ch. 9 - (a) Describe the structure of a sarcomere and...Ch. 9 - What is the importance of acetylcholinesterase in...Ch. 9 - Explain how a slight (but smooth) contraction...Ch. 9 - Explain what is meant by the term...Ch. 9 - Define and draw a motor unit.Ch. 9 - Describe the three distinct types of skeletal...Ch. 9 - True or false: Most muscles contain a predominance...Ch. 9 - Describe some cause(s) of muscle fatigue and...Ch. 9 - Define EPOC.Ch. 9 - Smooth muscle has some unique properties, such as...Ch. 9 - Lets continue our tale of Mrs. DeStephanos medical...Ch. 9 - Lets continue our tale of Mrs. DeStephanos medical...Ch. 9 - Lets continue our tale of Mrs. DeStephanos medical...Ch. 9 - Lets continue our tale of Mrs. DeStephanos medical...
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- Which statements are true? Explain why or why not.1 The role of ATP hydrolysis in actin polymerizationis similar to the role of GTP hydrolysis in tubulin polym-erization: both serve to weaken the bonds in the polymerand thereby promote depolymerization.2 Motor neurons trigger action potentials in musclecell membranes that open voltage-sensitive Ca2+ channelsin T tubules, allowing extracellular Ca2+ to enter the cyto-sol, bind to troponin C, and initiate rapid muscle contrac-tion.3 In most animal cells, minus-end directed microtu-bule motors deliver their cargo to the periphery of the cell,whereas plus-end directed microtubule motors delivertheir cargo to the interior of the cell.arrow_forwardThe abundant intercellular connections gab junction can be found in O diaphragm O Heart muscle O Skeletal muscle O Smooth musclearrow_forwardGive 4 similarities and 4 differences between and nature and/or role of membrane potentials in a neuron and in a mitochondrion.arrow_forward
- The thermoregulation center found in thalamus. " False True The chemical bonds of a living organism which can create new molecules are the following --------* Peptide bonds Covalent bonds Hydrogen bonds lonic bonds All body membranes attached to basement membrane by* hemidesmosomes gap junction adhesion belt desmosomes The skeletal system has this primary functions as--- Gard exit and entrance Protection leverage Blood cells productionarrow_forwardWhat is not a similarity between motility of cilia/flagella and skeletal muscle? Group of answer choices: Both have cytoskeletal fibers arranged in a ring pattern Both involve motor proteins connected to a cytoskeleton "track" Both can produce movement Both require ATP hydrolysisarrow_forwardhich of the following statements is true about actin: OActin is translated by free ribosomes O Dyneins move toward the minus end of actin filaments actin can bind to GTP O actin filament is stabilized by ADP-bindingarrow_forward
- molecules of actin could it hold? Assume the cell is spherical The Size of Cells and Their Components (a) If you were to magnify a cell 10,000-fold (typica] of u magnification achieved using an electron microscope), ho ples of Bioch 1. yotic cell with a cellular diameter of 50 µm. (b) If this cell were a muscle cell (myocyte), how many and no other cellular components are present; actin molecules are spherical, with a diameter of 3.6 nm. (The volume of a sphere is %ar.) (c) If this were a liver cell (hepatocyte) of the same dimensions, how many mitochondria could it hold? Assume the cell is spherical; no other cellular components are pre- sent; and the mitochondria are spherical, with a diameter of 1.5 µm. h (d) Glucose is the major energy-yielding nutrient for most cells. Assuming a cellular concentration of 1 mM (that is, 1 millimole/L), calculate how many molecules of glucose would be present in our hypothetical (and spherical) eukaryotic cell. (Avogadro's number, the number of…arrow_forwardMolecular Biochemistry Q. Why can’t Myosin V motor proteins “walk” towards the negative end of the actin molecule? Why do most myosins move toward the positive end? Why do most myosins move toward the positive end instead of the negative end? Explainarrow_forwardQUESTION 1 Matching. Match the tissue type to its anatomy or physiology. Use letters more than once. made of specialized cells called neurons and neuroglia - vmade of cells, cells, and cells made of cells, extracellular proteins, and a "fluid" ground substance made of cells with lots of microfilament (actin/myosin) 'proteins inside them |can appear striated under the microscope A. connective Jare under another type of tissue to supply its blood needs B. epithelial can function as an area of absorption, secretion (letting substances pass through), or protection C. muscle makes up organs that gather information and make decisions about what to do and then give directions to the body D. nervouS v contract coat and cover surfaces exposed to the external environment and make glands send electrical signals through body do many jobs in the body including carrying gases, storing energy, acting as bony levers Click Save and Submit to save and submit. Click Save All Answers to save all answers.arrow_forward
- In muscle, calcium moves from the cytoplasm to the sarcoplasmic reticulum by O active transport, ion channels using diffusion, pumps O diffusion, ion channels active transport, pumpsarrow_forwardMatch the following Actin filaments Intermediate filaments Microtubules [Choose ] Most concentrated just under the cell membrane and help maintain the shape of cellular projections ✓ Support cell shape and fix organelles in place Act as track for organelles and other materials to move Most concentrated just u [Choose ]arrow_forwardProperty of cells? O All of these are correct. O Cells engage in numerous mechanical activities. O Cells generally respond to stimuli. O Cells evolve. O Cells are capable of self-regulation.arrow_forward
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