Four gates, one direction
Before you read
Test yourself first: 5 questions
Question 1 of 5
The semilunar valves are located:
Answer: A. Four valves in order around the lap: tricuspid, pulmonic, mitral, aortic. The two semilunar ones sit at the ventricular exits.
Question 2 of 5
A normal resting heart rate for an adult is about:
Answer: B. A healthy adult resting heart rate is generally 60–100 beats per minute.
Question 3 of 5
The four chambers of the heart are two atria and two:
Answer: B. The heart has two upper atria and two lower ventricles.
Question 4 of 5
Which body cavity contains the heart and lungs?
Answer: B. The thoracic cavity houses the heart and lungs, protected by the rib cage.
Question 5 of 5
How many chambers does the human heart have?
Answer: C. The heart has four chambers: two atria and two ventricles.
Keep the streak going with more questions like these, each with a full rationale.
