Cycle starts with period when unfertilized egg sheds uterine lining. FSH stimulates egg growth, producing 5-20 immature eggs. Estrogen surge thickens uterine lining for potential pregnancy. Cycle ends when estrogen levels drop, preparing for next month
SHBG is a glycoprotein that binds to androgens and estrogens. Produced mainly by liver, with other sites including brain, uterus, testes, and placenta. Contains two identical peptide chains with different oligosaccharide attachments. Gene located on chromosome 17, with eight exons and three variations
Positive feedback amplifies or magnifies changes in the body. System consists of stimulus, sensor, control center, and effector. Maintains homeostasis by responding to external disturbances