The drug scopolamine is used to treat dizziness, motion sickness, and smooth muscle spasms. When isolated muscle cells are incubated with scopolamine, addition of acetylcholine no longer depolarizes the muscle cell membrane or stimulates muscle cell contraction. Which would best explain how scopolamine exerts its muscle-relaxing effects

scopolamine does inhibits the opening of acetylcholine-gated Na+ channels in the muscle cell membrane. Acetylcholine  in turn triggers muscle contraction by opening a ligand-gated Na+ channel, which leads to membrane depolarization and contraction of the muscle cell.

Explanation:

Scopolamine can be defined as  an intravenous and oral drug that is taken or used by individuals for the relief or  prevention of motion sickness, reduction of  nerve signals that do  ignite or trigger vomiting. it is located and secreted of some organs in the body,e.g.  the stomach and intestines.

it is used by some individuals to sheal or cure stomach or intestinal obsessions, muscle spasms e.t.c.

true because they can bargain

the earthquake in haiti was a magnitude of 7.0 according to the u.s geological survey yet the smaller earthquake in haiti killed more than 200,000 and left more than 1.2 million people homeless. the chile earthquake was a magnitude of 8.8 and 500 times more stronger but chile's earthquake only injured 712 people.