Cardiovascular System Flashcards
7 cards from real Anatomy and Physiology practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Cardiovascular System flashcards as text
How many chambers does the human heart have?
Answer: Four
The human heart has four chambers: the right atrium, right ventricle, left atrium, and left ventricle.
Which chamber of the heart pumps oxygenated blood to the systemic circulation?
Answer: Left ventricle
The left ventricle pumps oxygenated blood into the aorta and out to the rest of the body.
What is the function of the mitral (bicuspid) valve?
Answer: Prevents backflow from the left ventricle into the left atrium
The mitral valve sits between the left atrium and left ventricle, preventing backflow of blood into the atrium during ventricular contraction.
Which blood vessels carry deoxygenated blood from the heart to the lungs?
Answer: Pulmonary arteries
The pulmonary arteries carry deoxygenated blood from the right ventricle to the lungs for oxygenation.
The sinoatrial (SA) node, the heart's natural pacemaker, is located in which chamber?
Answer: Right atrium
The SA node is located in the wall of the right atrium near the opening of the superior vena cava and initiates each heartbeat.
What is the pericardium?
Answer: The fibrous double-layered sac enclosing the heart
The pericardium is a fibrous sac with two layers that surrounds and protects the heart, reducing friction during contraction.
The tricuspid valve is located between which two structures?
Answer: Right atrium and right ventricle
The tricuspid valve, named for its three cusps, separates the right atrium from the right ventricle and prevents backflow during contraction.