It takes about 18 seconds for the 4.7 L of blood present in the average adult to circulate through the entire body.Blood contains about 5* 10⁶ red blood cells (RBC) per microliter.On average, how many RBC circulate through the system per second?

Question

Quizplus · Accepted Answer

To find the number of RBCs circulating per second, first calculate the total number of RBCs in the body: 4.7 L = 4,700,000 microliters. Multiply by 5 x 10^6 RBCs/microliter to get 2.35 x 10^13 RBCs. Since this circulates in 18 seconds, divide by 18 to get approximately 1.3 x 10^12 RBCs per second, closest to 1 x 10^12 RBCs.

It Takes About 18 Seconds for the 4