Search results
Right atrium
- The right ventricle is located below the right atrium and pumps blood into the pulmonary circulation. It has relatively thin walls compared to the left ventricle and is crescent-shaped in cross-section.
anatomy.co.uk/heart/
Jun 11, 2024 · The heart is the pump that moves blood around your body. It has four main parts: two upper chambers called atria and two lower chambers called ventricles. These parts work together to get oxygen-rich blood to your body and oxygen-poor blood back to your heart.
Nov 10, 2024 · The heart is a muscular organ that pumps blood throughout the body via the circulatory system. It is approximately the size of a fist and consists of four chambers: two atria and two ventricles. The heart is composed of specialized muscle tissue, known as myocardium , and is encased within a double-layered protective sac called the pericardium .
- The Heart Wall Is Composed of Three Layers. The muscular wall of the heart has three layers. The outermost layer is the epicardium (or visceral pericardium).
- The Atria Are the Heart’s Entryways for Blood. The left atrium and right atrium are the two upper chambers of the heart. The left atrium receives oxygenated blood from the lungs.
- Each Heart Beat Is a Squeeze of Two Chambers Called Ventricles. The ventricles are the two lower chambers of the heart. Blood empties into each ventricle from the atrium above, and then shoots out to where it needs to go.
- The Valves Are Like Doors to the Chambers of the Heart. Four valves regulate and support the flow of blood through and out of the heart. The blood can only flow one way—like a car that must always be kept in drive.
In the right ventricle, the inlet valve is the tricuspid valve, and the outlet valve is the pulmonic (pulmonary) valve. Each valve consists of flaps (cusps or leaflets), which open and close like one-way swinging doors. The mitral valve has two cusps. The other valves (tricuspid, aortic, and pulmonic) have three.
Aug 17, 2023 · The right atrium and ventricle make up most of the sternocostal surface of the heart, while the diaphragmatic surface is made up by the right and left ventricles. The left atrium contributes to the anatomical base.
- Medical Content Validation
- Week 3-8 of gestation
The right side of the heart. Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
Oct 31, 2024 · Passage of blood through the left atrium, bicuspid valve, left ventricle, aorta, tissues of the body, and back to the right atrium constitutes the systemic circulation. Blood pressure is greatest in the left ventricle and in the aorta and its arterial branches.
