Ectopic pregnancies can be life threatening.  

Phosphodiesterase prolongs the action of cGMP  

Breast cancer grows by expansion

Osteoporosis is an increase in bone density.

Identify the bony structure indicated by the arrow.  

Identify the part of the gastrointestinal tract indicated by the arrow.  

Identify the artery in the female anal triangle indicated by the arrow (body is in prone position).  

Identify the mesenteric structure indicated by the arrow.  

Which of the following ligaments attach to the bony structure indicated by the arrow.  

Blood that fills the sinusoids of the corpora cavernosa during erection arrives through which of the following arteries?