Question
In: Biology
What does excitation-‐contraction coupling mean?
What does excitation-‐contraction coupling mean?
Solutions
Expert Solution
What does excitation-‐contraction coupling mean?
Excitation-contraction coupling (ECC) is the process whereby an action potential triggers a myocyte to contract.
This excitation-‐contraction coupling is nothing but the conversion of an excitation stimulus into contraction of the effector muscle fiber; ionic calcium is the link between the two.
gladiator answered 2 years agoRelated Solutions
Skeletal A) In skeletal muscle what do we mean by excitation-contraction coupling? B) What causes the...
Skeletal
A) In skeletal muscle what do we mean by
excitation-contraction coupling?
B) What causes the excitation? Be specific as to the events
and ions and channels involved.
C) How is it linked to the contraction events? What ion is
involved and how does it work to initiate contraction? (include the
proteins activated)
D) What causes relaxation? (you do not have to describe the
complete contraction event, just what allows it to start and what
ends it)
1. Based on your knowledge of excitation-contraction coupling and the symptoms in this case, what will...
1. Based on your knowledge of excitation-contraction coupling
and the symptoms in this case, what will a cholinesterase inhibitor
cause skeletal muscle to do?
2. Based on your knowledge of excitation-contraction coupling
and the symptoms in this case, what will a cholinesterase inhibitor
cause glands (which also respond to ACh) to do?
3. Based on your knowledge and information provided, what must
Atropine be an antagonist for?
Describe the steps of excitation-contraction coupling and the role of calcium in this process.
Describe the steps of excitation-contraction coupling
and the role of calcium in this process.
1) Explain the anatomical breakdown of a muscle. 2) What is excitation-contraction coupling? 3) Explain the...
1) Explain the anatomical breakdown of a muscle.
2) What is excitation-contraction coupling?
3) Explain the sliding filament theory.
4) What happens to a muscle if an action potential stops
stimulating a muscle fiber?
Describe in detail excitation-contraction coupling in myocardial cells. Be sure to include the main types of...
Describe in detail excitation-contraction coupling in
myocardial cells. Be sure to include the main types of
membrane proteins involved, and the changes in membrane
potential, the movements of ions and other
structures involved. Explain how excitation-contraction
coupling in cardiac muscle cells is different from
excitation-contraction coupling in skeletal muscle
cells. Explain how cardiac muscle cells relax.
Describe the process of excitation-contraction coupling in a skeletal muscle fiber, starting at the very beginning...
Describe the process of excitation-contraction coupling in a
skeletal muscle fiber, starting at the very beginning and working
your way to the end of the process. Make sure you discuss all
relevant steps in the correct order.
Put these steps in neuromuscular junction synaptic transmission and excitation-contraction coupling in chronological order. (Type the...
Put these steps in neuromuscular junction synaptic transmission
and excitation-contraction coupling in chronological order. (Type
the letters in the appropriate order with no spaces between
them).
A. Ryanodine receptors open
B. Voltage-gated Na+ channels open in the muscle cell membrane
near the neuromuscular junction
C. Tropomyosin rotates into the groove of the thin filament (out
of the way of the myosin binding site)
D. Depolarization of motoneuron axon terminal
E. Ca2+ dissociates from troponin
F. [Ca2+] rises in the muscle...
Describe and/or diagram the mechanism that regulates intracellular Ca+2 during excitation-contraction coupling in cardiomyocytes.
Describe and/or diagram the mechanism that regulates
intracellular Ca+2 during excitation-contraction coupling in
cardiomyocytes.
Explain “Excitation-Contraction Coupling” by describing the chain of events that occurs from the Action Potential approaching...
Explain “Excitation-Contraction Coupling” by describing the
chain of events that occurs from the Action Potential approaching
the terminal end of the motor neuron through the production of a
concentric contraction in the skeletal muscle
Topic 6: Skeletal muscle contraction Describe in detail the entire process of excitation coupling in skeletal...
Topic 6: Skeletal muscle contraction
Describe in detail the entire process of excitation
coupling in skeletal muscle, begin with an action potential
reaching the synaptic knob of a motor neuron through completion of
a cross Bridge cycle. after detailing those events to include the
following information
Define a motor unit describe motor unit recruitment and
Explain how these terms relate to excitation-contraction
coupling.
Define and describe muscle twitch and summation and
explain how these terms relate to motor unit/motor unit...
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