The sciatic nerve is formed from portions of both the anterior and posterior divisions of the plexus. this nerve projects from the pelvis through the sciatic notch of the os coxae and extends into the region of the thigh. the sciatic nerve is actually composed of two wrapped in a common sheath.

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

magnesium is an electrolyte injection commonly used to treat low magnesium levels in your blood. it is also used to prevent or control seizures in women with preeclampsia or eclampsia.

a compound light microscope is used to magnify objects in steps.  

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