Which lymphatic trunks merge to form the cisterna chyli?

A) Subclavian and bronchomediastinal
B) Lumbar and intestinal
C) Inguinal and lumbar
D) Intestinal and subclavian
E) Intestinal and pelvic

The role of cAMP when it acts as an intracellular mediator in cells is to

A) bind to and activate protein kinase.
B) directly activate genes in the nucleus to produce mRNA by binding to DNA.
C) directly activate structural enzymes in the cytoplasm of the target cell.
D) catalyze a cascade reaction that ultimately activates genes on the DNA.
E) control levels of calcium in the cell.