Question

What physiological responses would you expect to see while our friend runs from the zombies? Please select all the correct answers:

- increased levels of insulin in her bloodstream

- increased production of CO2 in her leg muscles

- increased release of norepinephrine at her SA node and ventricular muscle

- increased venous return leading to increased end-diastolic volume

- decreased duration in the interval between the t wave and her next qrs (well, if her ECG electrodes didn’t fall off)

- increased stroke volume causing an increase in her heart rate

- increased slope of pacemaker potentials in her SA node cells

- an increase in the cardiac output from her left but not her right ventricle

Answer 1

Increased release of norepinephrine in sa node and ventricular muscle.It is released into the blood as a stress hormone when the brain perceives that a stressful event has occurred.