General Knowledge
Doctor's Medical Exam Deep Quiz
Medical emergencies, anatomy, and the questions real doctors face.
Medical emergencies, anatomy, and the questions real doctors face.
The human heart beats approximately 100,000 times per day — pumping 7,500 liters of blood through 100,000 km of blood vessels, enough to circle the Earth 2.5 times. This deep dive quiz goes beyond the basics with 50 challenging questions on CPR technique, emergency medicine, anatomy surprises, medical myths, and drug and treatment facts that separate medical experts from the rest.
You'll master CPR compression technique and the song that matches its beat, learn how to handle real emergencies from anaphylaxis to stroke, discover surprising anatomy facts (how many bones babies have vs adults, which bone is the smallest), debunk persistent medical myths, and understand the truth about antibiotics, vaccines, and blood types.
Current guidelines recommend 100–120 chest compressions per minute during CPR. The Bee Gees' "Stayin' Alive" hits almost exactly 103 beats per minute, making it a famous and practical memory aid for the correct compression rate. Several studies and the American Heart Association have highlighted this song for CPR training.
No — this is a persistent medical myth. Physician Donald Unger famously cracked the knuckles of only his left hand every day for 60 years and developed no arthritis in either hand. The cracking sound is caused by nitrogen gas bubbles collapsing in the synovial fluid of the joint, not by joint damage.
We use virtually 100% of our brain — the idea that humans only use 10% is a well-known myth with no scientific basis. Brain imaging studies show activity across almost all brain regions, even during sleep. The brain consumes about 20% of the body's energy despite being only 2% of its weight, which would make no evolutionary sense if most of it sat idle.
Last updated: March 2026