Biology, 05.05.2020 05:00, sunshine52577oyeor9

Sequence the events that take place when a motor neuron's action potential triggers a muscle contraction.
a) The motor neuron's action potential arrives at the neuromuscular junction.
b) Myosin cross‑bridges attach to actin fibers.
c) The muscle fiber's plasma membrane depolarizes in response to the arrival of acetylcholine.
d) Calcium ions bind to troponin, which changes the conformation of the tropomyosin so the actin-binding sites are exposed.
e) The sarcoplasmic reticulum becomes more permeable in response to the action potential, causing a release of calcium ions.
f) The action potential moves throughout the muscle fiber along transverse (T) tubules.

Answers: 2

Show answers

Other questions on the subject: Biology

Biology, 22.06.2019 00:00, luzinaustin

How many species of living things are alive on earth today? more than 1,000,000 none of these answers are correct 100-500 1,000 –500,000 o 500,000 -1,000,000

Answers: 1

continue

Biology, 22.06.2019 05:30, 100738

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim

Answers: 1

continue

Biology, 22.06.2019 06:20, cherylmorton7302

All organisms contribute some water to the water cycle by conducting

Answers: 1

continue

Biology, 22.06.2019 13:20, crazymadhatter0

Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).

Answers: 2

continue

Do you know the correct answer?

Sequence the events that take place when a motor neuron's action potential triggers a muscle contrac...