Which of the following target organs/systems is affected by the sympathetic nervous system but is NOT affected by the parasympathetic nervous system?

A. lungs
B. cellular
C. metabolism
D. salivary glands
E. gallbladder

Respuesta :

Answer:

Option B, Cellular Metabolism

Explanation:

The sympathetic nervous system is responsible for maintaining the homeostasis for internal organs and also regulates the stress responses. It thus helps in regulating the cellular metabolism and physiologic functions. The Norepinephrine takes care of physiologic functions while the epinephrine takes care of metabolic effects such as hyperlipemia, enhanced usage of oxygen, hyperlactacidemia etc,.  

The cellular metabolism is taken care of by PGC-1α (a transcriptional regulator) which interacts with several transcription factors such as gluconeogenesis, fatty acid oxidation, metabolic rate, glycolysis etc.  

 Hence, option B is correct