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.
âMojoâ Pittosporum, Pittosporum tobira, is a small, dense, mounding, evergreen shrub with outstanding glossy, variegated green leaves that have a creamy yellow border.âMojoâ adds a little tropical flare to the garden through its foliage, and can reach 2 to 3 feet in height with a 3 foot spread.Mojoâ Pittosporum, Pittosporum tobira, is a small, dense, mounding, evergreen shrub with outstanding glossy, variegated green leaves that have a creamy yellow border.