The Sympathetic Nervous System and Fight or Flight Response

Constriction of blood vessels = Raises blood pressure Release of glucose into the blood = Provides extra energy for muscles Dilation of airways = Increases oxygen intake Redistribution of cardiac output = Increases blood supply to exercising muscles

Basal tone = State of complete relaxation Noradrenaline = Hormone that constricts blood vessels Adrenaline = Hormone that releases glucose into the blood Fight or flight response = State of complete rest

Glcogenolysis = Breaks down glycogen to glucose Increase in cardiac output = Increases heart rate Dilation of airways = Increases oxygen intake Constriction of blood vessels = Decreases blood pressure

<p>Adrenaline = Increases heart rate and blood pressure Noradrenaline = Constricts blood vessels Insulin = Lowers blood sugar levels Glucagon = Raises blood sugar levels</p> Signup and view all the answers

<p>Accelerator pedal = The parasympathetic nervous system Fight or flight response = The body's preparation for physical action Basal tone = A constant level of sympathetic activity Sympathetic nervous system = The body's relaxation response</p> Signup and view all the answers