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A stylized heart and lungs are centered above a stethoscope, with two circular shapes at the top.

Can you keep the pace or will this heart & lungs trivia leave you out of breath?

Human Body & Anatomy

ZapStacks

5

Zaps

110

Oxygen hits the blood and the clock starts. You know the valves, the chambers, and the frantic rhythm of a resting pulse, but can you map the pressure under fire? From the vena cava to the bronchioles, every beat counts. Prove you possess the stamina to master the pump.

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ZapStacks

A stylized human heart surrounded by branching black lines and a stethoscope.
Arteries & Veins
20 Zaps · Hard
A stylized human heart, a microscope, a blood drop with blood type symbols, and a medical cross.
Blood & Blood Types
20 Zaps · Medium
A geometric illustration of human lungs, trachea, and diaphragm with an O2 symbol.
Breathing & Respiration
25 Zaps · Medium
A stylized human heart surrounded by medical and scientific icons, including a stethoscope, an EKG line, and oxygen molecules.
Human Heart
25 Zaps · Medium
Human lungs with a magnifying glass showing a close-up of the honeycomb-like structure of the alveoli.
Human Lungs
20 Zaps · Easy

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