Select the correct statements regarding myosin-mediated contraction in the sarcomere.Ca2+ is required for the binding of myosin to f-actin.Myosin and f-actin are randomly distributed in the sarcomere.Physical pulling of the actin microfilament requires three distinct conformation changes on myosin that involve ATP binding, ATP hydrolysis and sequentialrelease of inorganic phosphate and ADP.Myosin-mediated contracted is ubiquitous across all el types.

Actin and myosin work together to produce muscle contractions and, therefore, movement.

Answered: Select the correct statements regarding…

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,...

See similar textbooks

Similar questions

What do the calcium ions that are released into the cytoplasm during contraction bind to? tropomyosin actin the Z-line myosin O troponin
Muscles relaxatiom occurs when acetylcholine is cleaved from its receptors ,calcium is pulled back into the sarcoplasmic recticulum,the myosin is released from its binding site ,and the muscle fiber returns to its resting lenght true or false
Tropmyosin and Troponin are called the regulatory proteins in muscle contraction. Describe the myofibril organization and specific structural and functional role of these two proteins in muscle contraction-relaxation cycle.
Which of the following shortens in length during skeletal mucle contraction? select all that apply Action filaments H- zone A- band I- band
In the absence of O Ca2+; Tropomyosin and Tropomodulin the myosin binding sites in the actin microfilament are masked by O ATP: Tropomyosin and Troponin ATP: Cofilin and Profilin OCa2+; Tropomyosin and Troponin Previous
Which of the following statements are true? (choose all that apply) The Z-disc is found in the middle of an l-band Myosin are known as the thick filaments The A-band is seen as "dark" under the microscope Tropomyosin is on the Actin filament During a muscle contraction, the sarcomeres move farther apart A sarcomere is located from one H-zone to the following H-zone
You are helping Eldon Tyrell create replicants to work in off-world colonies. You want to design muscle cells that can produce the most tension. These muscle cells will have an abundant amount of: Moments that will be lost in time, like tears in rain... Sarcolemma Mitochondria O Myofibril
During the cross bridge cycle, what is the first event that occurs after ATP binds myosin? the power stroke occurs myosin releases actin myosin binds actin to form another cross bridge myosin enters its energized state
The mechanism of contraction in smooth muscle is different from skeletal muscle in that the site of calcium binding differs ATP energizes the sliding process actin and myosin interact by the sliding filament mechanism the trigger for contraction is a rise in intracellular calcium the thick filaments have fewer myosin heads
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
During muscle contraction, the ion that leaks out of the sarcoplasmic reticulum and induces myofibrils to contract is O Na+. O Mg2+. O Cksup>-. O K+. O Ca2+.
Put in order the steps of activation, excitation and contraction of skeletal muscle.

SEE MORE QUESTIONS

Recommended textbooks for you

Human Anatomy & Physiology (11th Edition)

Anatomy and Physiology

ISBN:

9780134580999

Author:

Elaine N. Marieb, Katja N. Hoehn

Publisher:

PEARSON

Anatomy & Physiology

Anatomy and Physiology

ISBN:

9781259398629

Author:

McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter

Publisher:

Mcgraw Hill Education,

Human Anatomy

Anatomy and Physiology

ISBN:

9780135168059

Author:

Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon

Publisher:

Pearson Education, Inc.,

Human Anatomy & Physiology (11th Edition)

Anatomy and Physiology

ISBN:

9780134580999

Author:

Elaine N. Marieb, Katja N. Hoehn

Publisher:

PEARSON

Anatomy & Physiology

Anatomy and Physiology

ISBN:

9781259398629

Author:

McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter

Publisher:

Mcgraw Hill Education,

Human Anatomy

Anatomy and Physiology

ISBN:

9780135168059

Author:

Marieb, Elaine Nicpon, Brady, Patricia, Mallatt, Jon

Publisher:

Pearson Education, Inc.,

Anatomy & Physiology: An Integrative Approach

Anatomy and Physiology

ISBN:

9780078024283

Author:

Michael McKinley Dr., Valerie O'Loughlin, Theresa Bidle

Publisher:

McGraw-Hill Education

Human Anatomy & Physiology (Marieb, Human Anatomy…

Anatomy and Physiology

ISBN:

9780321927040

Author:

Elaine N. Marieb, Katja Hoehn

Publisher:

PEARSON

SEE MORE TEXTBOOKS