Muscle contraction ends when calcium ions are pumped back to the sarcomere. During stimulation of the muscle cell, the motor neuron releases the neurotransmitter acetylcholine which travels across the neuromuscular junction (the synapse between the terminal bouton of the neuron and the muscle cell).
Hellebore. Helleborus. Hellebores are so easy and so pretty, they have a place in nearly every landscape. Their exquisite bowl-or saucer-shape flowers in white (often speckled), pinks, yellows, or maroon remain on the plant for several months, even after the petals have fallen. Deer-resistant and mostly evergreen, hellebores' divided leaves rise on sturdy stems and may be serrated (like a knife) along the edges. Grow hellebores in shade where soil remains moist; some hellebores prefer acid or alkaline conditions, depending on variety.
Houseplants and Flowers. Pothos plant is a household favorite and is on my list of the ten best house plants, for their easy care and durability. Also called Scindapsus Aureus or Epipremnum Aureum, they are known in some places as Devil's Ivy and have been found to be extra efficient at helping to clean indoor air.