What is the term for when the fetus and placenta deliver before the 28th week of pregnancy?

Anterior displacement of the vertebra, usually in the lumbar spine, is called:

a. Kyphosis b. Strain c. Osteomyelitis d. Spondylolisthesis

A patient with a history of renal failure, among other things, has an impairment in the ability to:

A) Control urination B) Retain adequate fluids C) Regulate electrolytes D) Maintain a normal blood sugar