A little girl was allergic to the sun (photosensitivity). Since she did not take Vitamin D, she failed to have bone calcification and she did not grow in height well. What disease did she most likely have?

Most vulnerable joint to injury in the  body.

Use  the ions and match them to the appropriate scenario. 

Myasthenia Gravis is an autoimmune disease that blocks ACh from binding to the ligand receptors on the muscle cell membrane. Eventually, the ACh ligand receptors are destroyed.  Because of this, muscle contractions will be blocked or weakened depending on the number of receptor sites remaining.

Arrange the following events at a chemical synapse in proper order, starting with the arrival of an action potential at the presynaptic end bulb. Assume that the postsynaptic cell will be depolarized. Exocytosis of the neurotransmitter (NT) NT is removed from the receptor Ligand gated sodium channels open Calcium voltage gated channels open NT binds to the receptor

Muscle cells originate from   

Solve the following inequality and write the solutions in interval notation.

All organs are dually innervated in the Autonomic nervous system.

The resting potential maintained by the Na+/K+ pump creates a slightly positive charge on the inside of the cell membrane.

Divide the polynomials and write the remainder as a fraction in your answer.