The regulatory peptides synthesized by the gut include hormones, peptide neurotransmitters and growth factors. Indeed, several hormones and neurotransmitters first identified in the central nervous system and other endocrine organs have subsequently been found in endocrine cells and/or neurons of the gut.ubsequent to hormone binding, a signal is transduced to the interior of the cell, where second messengers and phosphorylated proteins generate appropriate metabolic responses. The main second messengers are cAMP, Ca 2+ , inositol triphosphate (IP 3), and diacylglycerol (DAG).
You are here. 20-Minute Total Body Rowing Workout. Pass by the crowd waiting for an elliptical and make a beeline for a rowing machine. Youâll burn up to 50 percent more calories while strengthening nearly all the muscles from your shoulders to your calves.
Works Entire Body. USRowing, the national governing body in the sport, says that rowing is one of the few exercises that use major muscle groups from all parts of the body. Rowing machine exercise, similar to the sport, involves both the upper and lower body.