| A | B |
|---|
| senescence | age-related decline |
| homeostasis | a state of physiological equilibrium |
| organ reserve | extra capacity for responding to stressful events |
| infertility | a condition characterizing about 15 percent of all married couples |
| motility | with age, declines in male sperm |
| pelvic inflammatory disease (PID) | often caused by sexually transmitted diseases |
| endometriosis | condition in which fragments of the uterus block the reproductive tract |
| in vitro fertilization (IVF) | fertilization of ova outside the body |
| anorexia nervosa | an affliction characterized by self-starvation |
| bulimia nervosa | an affliction characterized by binge-purge eating |
