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cross bridge formation
"Excitation-contraction coupling" connects muscle fiber excitation to the muscle fiber contraction (cross bridge formation). During contraction, myosin heads form cross bridges many times-with each cross bridge generating a small amount of tension in the muscle fiber.
Wiki User
∙ 10y ago
Wiki User
∙ 7y agoLike most excitable cells, muscle fibers respond to the excitation signal with a rapid depolarization which is coupled with its physiological response: contraction.
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What is excitation coupling and list the process?
poooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooop!
Excitation-contracton coupling requires which of the following substances?
Ca2 and ATP
What process is not involved in moving water from roots to leaves in a plant?
Cell contraction
The process of sharpening the focus of light on the retina is known as?
Contraction
Some muscle fibers always contracted?
Summation and/or tetanic contraction. Summation is increased muscle contraction until maximal sustained contraction is achieved. Tetanic contraction is sustained muscle contraction without relaxation. If you're inquiring for the Learning Objective Review in an anatomy and physiology course, the question refers to a condition in which some fibers are always contracted... so I'm not sure if they're looking for summation or tetanic contraction - but I think it would be tetanic contraction as summation is more the process leading up to the tetanic contraction...
Excitation-contraction coupling refers especially to the means by which do what?
means by which electrical excitation of a muscle results in muscle contraction
Excitation-contraction coupling requires what?
Calcium and ATP
Excitation-contraction coupling requires what substances?
Ca2+ and ATP
What substance does excitation-contraction coupling require?
ca2+ and atp
What substances does excitation contraction coupling requires?
ca2+ and atp
What are the 4 stages of a muscle cell?
Tonus (relaxation), Excitation (neural stimulation, Clonus (contraction), Tetanus (prolonged contraction), return to Tonus (relaxation) Or Excitation, Excitation-Contraction Coupling, Contraction, Relaxation
When does excitation-contraction coupling occur?
Latent period; Delay This is the time required for excitation, excitation-contraction coupling, and tensing of the elastic components of the muscle Chapter 11 Anatomy & Physiology "The Unity of Form and Function" 5th Edition Saladin
What best describes the events of excitation in excitation-contraction coupling?
cross bridge formation "Excitation-contraction coupling" connects muscle fiber excitation to the muscle fiber contraction (cross bridge formation). During contraction, myosin heads form cross bridges many times-with each cross bridge generating a small amount of tension in the muscle fiber.
Which of the following best describes the events of excitation in excitation-contraction coupling?
Propagation of the action potential along the sarcolemma
What describes the events of contraction in excitation-contraction coupling?
cross bridge formation "Excitation-contraction coupling" connects muscle fiber excitation to the muscle fiber contraction (cross bridge formation). During contraction, myosin heads form cross bridges many times-with each cross bridge generating a small amount of tension in the muscle fiber.
Which Ion is principally responsible for myocardial excitation-contraction coupling?
the Ca++ ion
What is excitation coupling and list the process?
poooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooop!
