Question

Describe how an action potential in a motor neuron results in actin-myosin muscle contraction. Includ the...

Describe how an action potential in a motor neuron results in actin-myosin muscle contraction. Includ the role of acetylcholine, acetylcholine receptor, calcium, sarcolemmal action potential, T tubules, and troponin.
Science   Anatomy-And-Physiology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Place the following events in the correct order they occur during excitation-contraction coupling in skeletal muscle:...
Place the following events in the correct order they occur during excitation-contraction coupling in skeletal muscle: Myosin forms a tight bond with actin and undergoes the ‘power stroke’. The troponin/tropomyosin complex shifts, exposing the myosin binding sites on the actin filament. Ca2+ binds to troponin. Ca2+ moves out of the sarcoplasmic reticulum (called a “calcium spark”). An action potential in the alpha motor neuron leads to the release of neurotransmitter at the neuromuscular junction. Nicotinic receptors on the motor end...
Describe completely the process of skeletal muscle contraction through to relaxation beginning with excitation from a...
Describe completely the process of skeletal muscle contraction through to relaxation beginning with excitation from a motor neuron. You may upload a file to help explain your question i.e. a picture or drawing. Using all of these terms: Acetylcholine Acetylcholinesterase Actin Choline DHP ryanodine molecule Diffusion Exocytosis Re-uptake pump(s) Sarcolemma                             Sarcomere Transverse-Tubules Troponin Tropomyosin   Roles of ATP, Calcium, Sodium, and Potassium ATP and Myosin: How specifically arrival of ATP, dephosphorylating of ADP +P, and release of ADP and P...
Part 2: Create a hand drawn diagram of the excitation-contraction coupling, beginning with the action potential...
Part 2: Create a hand drawn diagram of the excitation-contraction coupling, beginning with the action potential initiation at the neuromuscular junction and ending with sliding filament action. Be sure to include the following terms: Synaptic terminal, Synaptic Cleft, Acetylcholine, Action Potential, T-tubule, Calcium, Nicotinic Acetylcholine Receptor, Sarcolemma, Contraction, Sarcoplasmic Reticulum, Excitation, Neuromuscular Junction, Troponin, Tropomyosin, Actin, Myosin, Sodium. Potassium, Z-line
I have true for all of these, please check my answers. 49. When an action potential...
I have true for all of these, please check my answers. 49. When an action potential travels down an axon to the synaptic knob of a motor neuron innervating skeletal muscle, calcium enters the synaptic knob from the extracellular fluid through electrically gated channels. The entry of the calcium into the synaptic knob results in the release of acetylcholine from synaptic vesicles. T 50. Acetylcholine released from vesicles within the synaptic knob of a motor neuron diffuses across the synaptic...
Activity 1 Using the list of (10) events for muscle contraction. match the numbers of the...
Activity 1 Using the list of (10) events for muscle contraction. match the numbers of the steps from with the correct periods below in which they would occur. Latent period: Contraction period: Relaxation period Hint- 10 events of muscle contraction 1. Action potential (electrical stimulation) from somatic (motor) nerve stimulates skeletal muscle fibers (cells) at neuromuscular junction 2.“AP” causes the opening of Na+ channels on the sarcolemma thus causing a wave of depolarization to travel from the neuromuscular junction. 3....
Put the steps of muscle contraction into the correct order Troponin releases calcium and the actin...
Put the steps of muscle contraction into the correct order Troponin releases calcium and the actin binding sites are covered by the twisting of tropomyosin A stimulus from the nerve cell is brought down the T tubule Calcium is released from the SR into the cytoplasm Myosin binds to Actin Calcium is removed from the cytoplasm and actively transported to the sarcoplasmic reticulum tropomyosin untwists and exposes the actin binding sites The thin filament slides closer to the M line,...
1. When an action potential reaches the T-tubule, it will activate the dihydropyridine receptor at the...
1. When an action potential reaches the T-tubule, it will activate the dihydropyridine receptor at the T-tubule to change conformational shape. Dihydropyridine receptor will trigger ryanodine receptor channel to secrete Ca2+ from the sarcoplasmic reticulum into the cytosol. When action potential is absent, Ca2+ ATPase at the sarcoplasmic reticulum will pump cytosolic Ca2+ into the sarcoplasmic reticulum. Select one: a. True b. False 2. What is TRUE about the myofibril? Select one: a. The thick and thin filaments on the...
Place the events of muscle contraction in the correct order. Selected Answer 1. ACh binds the...
Place the events of muscle contraction in the correct order. Selected Answer 1. ACh binds the nicotinic receptors at the neuromuscular juncton causing an electrical signal to develop along the muscle membrane. 2. electrical signal from the motor neuron causes the release of ACh 3. Calcium is pumped into the sarcoplasmic reticulum. 4. The signal travels into the muscle cell along the T tubules. 5. The electrical signal causes the sarcoplasmic reticulum to release calcium. 6. "Calcium binds to the...
After the stimulus voltage has been applied, what events occur during the latent period? CHECK ALL...
After the stimulus voltage has been applied, what events occur during the latent period? CHECK ALL THAT APPLY. a. troponin pulls tropomyosin off the myosin binding sites of actin b. Action potentials move down a motor neuron c. tropomyosin pulls troponin off the myosin binding sites on actin d. Action potentials move down the t-tubules e. calcium binds to troponin f. ACh is released from the motor neuron g. Calcium is released from the sarcoplasmic reticulum h. calcium binds to...
Draw a diagram! The purpose of the diagram is to show the steps from a neuron...
Draw a diagram! The purpose of the diagram is to show the steps from a neuron stimulating a skeletal muscle cell to contraction of that muscle cell. Include in your diagram: •axon terminal of motor neuron •synaptic cleft •neurotransmitter •neurotransmitter binding channels on muscle cell •t-tubules •depolarization •sarcoplasmic reticulum •receptors/channels that work together to release Ca2+ •Ca2+, Where is it? Where does it go? What does it bind to? •Sarcomeres-components (actin, myosin, tropomyosin, troponin, ATP) and how it works (sliding...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT