The presence of which hormone in a woman's blood is indicative of pregnancy (and is tested for in a pregnancy test?) What is the function of this hormone?
During menstruation, a large number of leukocytes are lost along with the endometrial tissues and bloody fluid. Several hypothesis have been proposed as to the purpose of this phenomenon. Propose a hypothesis of your own.
Explain how the drug sildenafil (Viagra, or Cialis) acts to facilitate erection for males affected by ED (erectile dysfunction).
Explain the likely consequences if a genetic male embryo (genotype XY) failed to develop testes