A Case of Seasonal Affective Disorder

I am not sure if I have the correct answers, it's an extra credit assignment and just want to make sure I am on the right track. I appreciate your help hope this is enough info. Case Presentation Melanie Johnson is a 32-year-old accountant who moved to Green Bay, Wisconsin, two years ago from her hometown of Sarasota, Florida. Beginning this past November, for the first time in her life, Melanie began experiencing periods of depression, lethargy, and excessive sleeping. In addition, she noticed that she was eating more than she had previously, and as a result, had gained 10 pounds. Melanie made an appointment with her physician, who after ruling out all potential medical causes of t... click for more

Skeletal System Study Questions

Contentious Bones Your 80 year-old great aunt, Persis, was placing a canning jar on the top shelf of her pantry when she stepped awkwardly off the stool and twisted her leg at the hip. She felt a sharp pain in her hip and, after collapsing to the floor, found she could no longer stand. She was taken to the emergency room where an X ray showed that the neck of her femur was fractured. More detailed X ray images revealed reduced bone mass in the head and neck regions of the injured femur, in the ends of other long bones of the body and in the vertebrae. Surgery was necessary to repair the fractured femur and a biopsy of the bone tissue indicated ... click for more

How does lack of surfactant effect ventilation?

I need to know how these situations influence ventilation? 1) increased respiratory passageway resistance 2) decreased lung compliance 3) lack of surfactant

Nerve Fibers

Explain why damage to peripheral nerve fibers is often reversible, whereas damage to CNS fibers rarely is.

Osteon

What type of rings are osteon made up of, and what are the chambers called that they house? What is found in these chambers?