ZAV :۱۲:۵۲م سبت ۳ نیسانdocs.google.com aThe functions of tropomyosin in skeletal muscle includesliding on actin to produce shorteningreleasing Ca2+ after initiation of contraction.binding to myosin during contraction.acting as a "relaxing protein" at rest by covering up the siteswhere myosin binds toactingenerating ATP, which it passes to the contractilemechanism.Which of the following is the proper progression of the levels of organization inthe body?chemicals, cells, organs, tissues, body systems, whole bodychemicals, cells, tissues, organs, body systems, whole bodycells, chemicals, tissues, organs, whole body, body systemscells, chemicals, organs, tissues, whole body, body systemsO chemicals, cells, tissues, body systems, organs, whole bodyworking as barriers that restricts the movement of protein and othermolecules from the underlying connective tissue into the epitheliumBasement membraneEpithelial tissueDermisMicrovilliBackNextNever submit passwords through Google Forms.This form was created inside of Al-Hussain University College. Report AbuseO OO O

1. acting as a relaxing protein at rest by covering up the sites where myosin binds to actin 2.…

Answered: The functions of tropomyosin in…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Similar questions

A new experimental drug is tested in muscle fibers and it is concluded that it blocks the calcium channels in the sarcoplasmic reticulum. Which of the following are expected consequences of the injection of this drug in skeletal muscles?
Compared to skeletal muscle, smooth muscle None of the choices are correct Has equal thick and thin filaments Uses calcium from the extracellular fluid only Has the same contractile and regulatory proteins. Has much more thick filaments than thin filaments
The sliding filament model depicts how myosin motors attached to actin lead to muscle contraction. This process proceeds in a precise series of events. Indicate which of the following shows the correct order of steps in the sliding filament model. Group of answer choices Myosin binds ATP; myosin tightly binds actin; power stroke; myosin releases actin Myosin binds GTP; myosin releases actin; power stroke; myosin tightly binds actin Actin binds ATP; power stroke; myosin tightly binds actin; actin releases ADP Actin binds ADP; myosin releases actin; power stroke; actin releases ADP
The diagram below represents the terminal cisterna in a muscle. Name and briefly explainthe function of the structures represented by A, B, C in the regulation of calcium ionsduring muscle contraction
What happens when the muscular action potential spreads through transverse (T) tubules of the sarcolemma? The action potential in T tubules triggers the release of acetylcholine from the axon terminals of the motor neuron. The action potential in T tubules triggers closing of sodium channels and opening of potassium channels, which enables myosin cross bridges to form. The action potential in T tubules opens voltage-sensitive calcium channels in the T tubules, allowing calcium to flow into the sarcoplasm. The action potential in T tubules causes a shape change in voltage-sensitive proteins that pull open calcium channels in the sarcoplasmic reticulum.
Indicate which of the following are true. Chronically shortened muscles will lose sarcomeres in series in order to maintain ideal amounts of myofilament overlap. Contractile force is proportional to the length of a muscle. Muscle organ contraction is all or nothing. Muscle cells are surrounded by an endomysium. Actin is the thick filament and Z-lines are where the cross-bridges zig-zag to adjacent actin filaments. Muscles with fewer motor units are weaker, i.e., capable of less force. A nerve impulse, calcium, and ATP are necessary for muscle contraction. Tendons attach bones to bones and help to limit the range of motion at joints. Muscle tissue is very dynamic and will respond to chronic stress by becoming stronger (making more myofilaments), chronic contraction by becoming shorter (losing sarcomeres in series), and stretching by becoming longer (adding sarcomeres in series). Myofilaments are actually long strands of proteins.
Slow-twitch (type I/red) fibers have a distinctive feature: fatigue easily relatively low quantities of glycogen relatively low quantities of myoglobin show a fast response relatively low quantities of mitochondria
explain the inner cells of the skeletal muscle to include: myofibrils, sarcolemma, sarcoplasm
In the sliding filament theory of contraction, what prevents the filaments from sliding back to their original positions each time a myosin head releases to bind to next actin binding site?
When an action potential arrives at the neuromuscular junction, acetylcholine is released into the synaptic cleft and binds to receptors in the postsynaptic membrane. Which of the following represents the correct order of the next series of events? A. An action potential travels down the T tubules, depolarization spreads through the T tubules, Ca2+ is released from the sarcoplasmic reticulum, and myosin binds to actin. B. Ca2+ is released from the sarcoplasmic reticulum, an action potential travels down the T tubules, depolarization spreads through the T tubules, and myosin binds to actin. C. An action potential travels down the T tubules, depolarization spreads through the T tubules, Ca2+ is taken up by the sarcoplasmic reticulum, and myosin binds to actin. D. T tubules are depolarized, Ca2+ is released from the sarcoplasmic reticulum, an action potential is created in the muscle cell, and myosin bonds to actin. E. An action potential travels…
Skeletal, cardiac, and smooth muscle cells are distinctly different from each other in numerous ways. Indicate how they differ in these specific ways (give the anatomical differences and the corresponding physiological consequences – structure and function). -Type of innervation -Contractile filament organization -Mechanism for contracticle activation and final contractile response
Complete the following analogies: Troponin is to skeletal muscle as tropomyosin is to smooth muscle Neuromuscular junction is to skeletal muscle as striations is to smooth muscle Oxidative metabolism is to slow twitch fibers as sliding filament theory is to fast twitch fibers if it is wrong let me know what might be the correct answer.

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