Write a thank-you note to your cardiovascular system. Be sure to mention many different ways your cardiovascular system works hard to keep you alive.

Explain why some cells in a females body respond to reproductive hormones while other cells do not.

Describe a time in the small group discussion when you drew on your preparation by referring to notes you had written earlier.

In multiple sclerosis, the immune system destroys the substance that coats and protects nerve fibers in the brain and spinal cord. this causes inflammation and injury to the nerves, and the axons don't conduct impulses as well.