Page 65 - Consciousness in the Cell
P. 65
outer layer smooth elastic white blood vessel's inner
muscle fibrous tissue lining
Hormones make and bind onto A chain reac- The vessel lining
their way receptors on tion is initiated. begins produc-
through a blood the blood ves- tion of nitric
vessel, sel lining. oxide.
Nitric oxide molecules Nitric oxide binds In this way, the activated
reach the vascular onto an enzyme in enzyme begins to synthesize
smooth muscle cells. the cell. cGMP from GTP.
cGMP then travels to As a result, the muscle cells
the myosin and relax and dilate.
activates it.
63
