Open full image ↗01 · Heart chamber
Right atrium
The receiving chamber for deoxygenated blood returning from the body through the superior and inferior venae cavae.
BODY IN RHYTHM 4DFOLLOW MY HEART
Back to Study HubINTERACTIVE CARDIOVASCULAR MAPExplore the circulation
Right atrium
Selected structureRight atrium
Blueoxygen-poor bloodRedoxygen-rich blood
1 · Pulmonary loopRight heart → lungs → left heart
2 · Systemic loopLeft heart → body → right heart
Color shows oxygen level—not artery versus vein.Follow My Heart · R&B Nasheed0:00 / 0:00
Body in Rhythm · visual library
DEEP ANATOMY ATLAS
Study each cardiovascular structure without the music or challenge timer. Select any plate to open the full-resolution anatomy.
Heart chambers
4 study platesOpen full image ↗
Open full image ↗02 · Heart chamber
Right ventricle
Pumps deoxygenated blood through the pulmonary valve and toward the lungs.
Open full image ↗03 · Heart chamber
Left atrium
Receives oxygenated blood returning from the lungs through the pulmonary veins.
Open full image ↗04 · Heart chamber
Left ventricle
Its thick muscular wall creates enough pressure to send oxygenated blood through the entire body.
Major blood vessels
5 study plates
Open full image ↗01 · Major blood vessel
Superior vena cava
This major vein carries deoxygenated blood from the upper body into the right atrium.
Open full image ↗02 · Major blood vessel
Inferior vena cava
This major vein carries deoxygenated blood from the lower body upward into the right atrium.
Open full image ↗03 · Major blood vessel
Aorta
The largest artery carries oxygenated blood from the left ventricle into systemic circulation.
Open full image ↗04 · Major blood vessel
Pulmonary artery
Carries deoxygenated blood from the right ventricle toward the lungs for gas exchange.
Open full image ↗05 · Major blood vessel
Pulmonary veins
These vessels are the vein exception: they carry oxygenated blood from the lungs into the left atrium.
Heart valves
4 study plates
Open full image ↗01 · Heart valve
Tricuspid valve
The right atrioventricular valve directs blood from the right atrium into the right ventricle and helps prevent backflow during ventricular contraction.
Open full image ↗02 · Heart valve
Pulmonary valve
This semilunar valve opens between the right ventricle and pulmonary trunk, then closes to prevent blood from returning to the ventricle.
Open full image ↗03 · Heart valve
Mitral valve
The left atrioventricular valve directs blood from the left atrium into the left ventricle.
Open full image ↗04 · Heart valve
Aortic valve
This semilunar valve opens between the left ventricle and aorta, allowing oxygenated blood to enter systemic circulation.
Electrical conduction system
5 study plates
Open full image ↗01 · Conduction structure
SA node
The sinoatrial node is the heart’s primary pacemaker. It initiates the electrical impulse that spreads across the atria.
Open full image ↗02 · Conduction structure
AV node
The atrioventricular node briefly delays the impulse so the ventricles have time to fill before they contract.
Open full image ↗03 · Conduction structure
Bundle of His
The atrioventricular bundle carries the impulse from the AV node through the heart’s fibrous skeleton into the upper interventricular septum.
Open full image ↗04 · Conduction structure
Bundle branches
The right and left bundle branches split from the AV bundle and conduct the electrical impulse down the interventricular septum toward both ventricles.
Open full image ↗05 · Conduction structure
Purkinje fibers · both ventricles
Purkinje fibers arise from the bundle branches and spread the electrical impulse through the myocardium of both ventricles.
Microcirculation and venous return
6 study plates
Open full image ↗01 · Circulation structure
Pulmonary capillaries
Capillaries surrounding the alveoli are the actual site where carbon dioxide leaves the blood and oxygen enters it.
Open full image ↗02 · Circulation structure
Systemic arterioles
Small arterial branches downstream from arteries regulate resistance and deliver blood into systemic capillary beds.
Open full image ↗03 · Circulation structure
Systemic capillaries
These microscopic exchange vessels deliver oxygen to tissues and receive carbon dioxide, nutrients and wastes.
Open full image ↗04 · Circulation structure
Systemic venules
Venules collect oxygen-poor blood from systemic capillaries and merge into progressively larger veins.
Open full image ↗05 · Circulation structure
Systemic veins → venae cavae
Systemic veins return blood toward the heart. Upper-body drainage reaches the superior vena cava; lower-body drainage reaches the inferior vena cava.
Open full image ↗06 · Circulation structure
Venous valves
One-way valves within many veins—especially in the limbs—help prevent backflow. They are separate from the heart’s tricuspid valve.
Heart sounds and paired valves
2 study plates
Open full image ↗01 · Paired valve event
AV valves · mitral + tricuspid
Closure of both atrioventricular valves—the mitral and tricuspid—is associated with the first heart sound, S1 or ‘lub.’
Open full image ↗02 · Paired valve event
Semilunar valves · aortic + pulmonary
Closure of both semilunar valves—the aortic and pulmonary—is associated with the second heart sound, S2 or ‘dub.’
Educational artwork for the public beta. Anatomy plates will continue through medical-content review before formal classroom or clinical use.
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FOLLOW THE MOVEMENT
See the Heart Lab turn into quick anatomy challenges, lyric breakdowns and behind-the-build clips.
Point-to challengesPause, choose the structure, then reveal the answer.
Lyric science clipsConnect each memorable line to the anatomy on screen.
Behind the buildFollow the journey from study song to interactive lesson.
Interactive 4D-motion public beta: time-synced lyrics, simulated depth, pulse and blood-flow overlays bring the realistic 2D anatomy scene to life. This is an educational prototype—not medical advice. Anatomy, timing and assessment content should be reviewed by qualified educators before formal classroom or clinical use.