Sheep Heart Anatomy Flashcards

Sheep Heart Anatomy

• Left Atrium: Receives oxygenated blood from the lungs via the pulmonary veins.
• Left Ventricle: Pumps oxygenated blood to the entire body through the aorta; has a thick muscular wall.
• Right Ventricle: Pumps deoxygenated blood to the lungs for oxygenation; thinner wall compared to the left ventricle.
• Right Atrium: Receives deoxygenated blood from the body via the superior and inferior vena cavae.
• Trabeculae Carnae: Ridges of cardiac muscle within the ventricles that support the ventricular walls.
• Papillary Muscles: Muscles that contract to tense the chordae tendineae; prevent backflow of blood into the atria during ventricular contraction.
• Pectinate Muscles: Prominent muscular ridges found in the anterior wall of the right atrium and the auricle; increase contractile strength.
• Tricuspid Valve: Located between the right atrium and right ventricle; prevents backflow of blood during ventricular contraction.
• Bicuspid Valve (Mitral Valve): Situated between the left atrium and left ventricle; regulates blood flow from atrium to ventricle.
• Semilunar Aortic Valve: Located at the entrance of the aorta; prevents blood from flowing back into the left ventricle.
• Pulmonary Semilunar Valve: Controls blood flow from the right ventricle into the pulmonary trunk; prevents backflow into the ventricle.
• Chordae Tendineae: White fibrous cords that connect the papillary muscles to the AV valves; crucial for valve functionality.
• Cardiac Muscle Tissue: Specialized muscle tissue found only in the heart; enables strong and rhythmic contractions.
• Superior Vena Cava: Large vein that carries deoxygenated blood from the upper body to the right atrium.
• Pulmonary Trunk: Artery that carries deoxygenated blood from the right ventricle to the lungs for oxygenation.
• Aorta: Major artery that carries oxygenated blood from the left ventricle to the body; the largest artery in the body.

Test your knowledge of sheep heart anatomy with these flashcards. Each card features key terms related to the heart's structure, including the atria and ventricles. Perfect for biology students studying cardiovascular systems.