Action potentials travel the length of the axons of motor neurons to the axon terminals. These motor neurons __________. a. extend from the brain to the sarcolemma of a skeletal muscle fiber b. arise in the epimysium of a skeletal muscle and extend to individual skeletal muscle fibers c. extend from the brain or spinal cord to the sarcolemma of a skeletal muscle fiber d. extend from the spinal cord to the sarcolemma of a skeletal muscle fiber

/in /by

Action potentials travel the length of the axons of motor neurons to the axon terminals. These motor neurons __________.
a. extend from the brain to the sarcolemma of a skeletal muscle fiber
b. arise in the epimysium of a skeletal muscle and extend to individual skeletal muscle fibers
c. extend from the brain or spinal cord to the sarcolemma of a skeletal muscle fiber
d. extend from the spinal cord to the sarcolemma of a skeletal muscle fiber

 
Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code "Newclient"

The neuromuscular junction is a well-studied example of a chemical synapse. Which of the following statements describes a critical event that occurs at the neuromuscular junction? a. Acetylcholine is released by axon terminals of the motor neuron. b. Acetylcholine binds to its receptor in the junctional folds of the sarcolemma. Its receptor is linked to a G protein. c. Acetylcholine is released and moves across the synaptic cleft bound to a transport protein. d. When the action potential reaches the end of the axon terminal, voltage-gated sodium channels open and sodium ions diffuse into the terminal.

/in /by

The neuromuscular junction is a well-studied example of a chemical synapse. Which of the following statements describes a critical event that occurs at the neuromuscular junction?
a. Acetylcholine is released by axon terminals of the motor neuron.
b. Acetylcholine binds to its receptor in the junctional folds of the sarcolemma. Its receptor is linked to a G protein.
c. Acetylcholine is released and moves across the synaptic cleft bound to a transport protein.
d. When the action potential reaches the end of the axon terminal, voltage-gated sodium channels open and sodium ions diffuse into the terminal.

 
Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code "Newclient"

Action potential propagation in a skeletal muscle fiber ceases when acetylcholine is removed from the synaptic cleft. Which of the following mechanisms ensures a rapid and efficient removal of acetylcholine? a. Acetylcholine is degraded by acetylcholinesterase. b. Acetylcholine is transported back into the axon terminal by a reuptake mechanism. c. Acetylcholine is transported into the postsynaptic neuron by receptor-mediated endocytosis. d. Acetylcholine diffuses away from the cleft.

/in /by

Action potential propagation in a skeletal muscle fiber ceases when acetylcholine is removed from the synaptic cleft. Which of the following mechanisms ensures a rapid and efficient removal of acetylcholine?
a. Acetylcholine is degraded by acetylcholinesterase.
b. Acetylcholine is transported back into the axon terminal by a reuptake mechanism.
c. Acetylcholine is transported into the postsynaptic neuron by receptor-mediated endocytosis.
d. Acetylcholine diffuses away from the cleft.

 
Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code "Newclient"

Which thick filament binds to actin once its active binding sites are exposed? myosin tropomyosin actin troponin

/in /by

Which thick filament binds to actin once its active binding sites are exposed?
myosin
tropomyosin
actin
troponin

 
Looking for a Similar Assignment? Order now and Get 10% Discount! Use Coupon Code "Newclient"