NEET PG DENTAL EXAM

Detailed explanation-1: -Cardiac output during exercise increases greatly owing to the relatively high heart rates that are achieved during exercise. Heart rate increases proportionately with workload until heart rates close to maximal are attained.

Detailed explanation-2: -Cardiac output in humans is generally 5-6 L/min in an at-rest to more than 35 L/min in elite athletes during exercise. HR is determined by signals from the sinoatrial node, which automatically depolarizes at an intrinsic rate of 60 to 100 times each minute.

Detailed explanation-3: -Cardiac output stays consistent throughout the day with little variation Cardiac output decreases substantially when exercising. CO is the volume of blood pumped from one ventricle in a span of one hour.