ANS Flashcards
Which system is the fight or flight reaction?
Sympathetic
When is sympathtic innervation activated?
Under conditions of stress, anxiety, physical activity or excitement
What happens when sympathetic innervation is activated?
Increased cardiac output and pulmonary ventilation
Routes blood flow to muscles and away from viscera (intestines)
Raises blood glucose and slows down digestion
Which system is rest and digest?
Parasympathetic
When is parasympathetic activated?
Sedentary activity and eating
What happens when parasympathetic innervation is activated?
Decreased cardiac output
Increases digestion - enhancer motility and secretions
Bladder contractions
What system are muscarinic receptors?
Mainly parasympathetic
Location and function of M2
Located in heart
Regulate heart rate and contractility by inhibiting cAMP release
