Lab #4 Heart Flashcards
Right Atrium
Deoxygenated blood is received from the vena cava and then sent to the right ventricle.
Left Atrium
Receives blood from the pulmonary veins.
Right ventricle
Receives blood from the right atrium and pumps it to the lungs via the pulmonary artery.
Left ventricle
Receives arterial blood from the right atrium and pumps it into the aorta.
Visceral pericardium
Thin layer of the pericardial sac that closely adheres to the heart.
Atrial pericardium
The “ear-like” structures that extend from the atria.
Coronary sulcus
Separates the atria from the ventricles.
Anterior interventricular sulcus
Marks the external boundary between the right and left ventricles.
Posterior interventricular sulcus
Marks the division of the left and right ventricles.
Interatrial septum
The wall between the atria of the heart
Interventricular septum
Partition between right and left ventricle.
Aorta
Conducts freshly oxygenated blood from the heart to the sinuses.
Superior vena cava
Carries blood from upper regions of the body to the right atrium.
Inferior vena cave
Brings oxygen poor blood from the lower part of the body to the right atrium.
Right atrioventricular (tricuspid) valve
Closes when the right ventricle contracts. Allows blood flow into the lungs which prevents back flow into the right atrium.
Left atrioventricular (bicuspid/mitral) valve
Allows blood to flow from the left ventricle to the aorta which prevents blood from flowing backward.
Chordae tendineae
Maintains the position and tension of the atrioventricular valves.
Papillary muscles
“Nipple” like projections of the myocardia which contract when the myocardia contracts.
Pulmonary (semilunar) valve
Determine the passage of blood between the ventricles and the main arteries, transporting blood away from the heart to the vital organs.
Pulmonary trunk
Artery that carries venous (deoxygenated) blood from the right ventricle of the heart and divides into the right and left pulmonary arteries.
R and L pulmonary arteries
R-sends deoxygenated blood to the lungs from the right ventricle.
L-carries oxygen-poor blood to the left lung.
R and L pulmonary veins
R superior-drains you lungs upper lobe and middle lobe.
R inferior-drains your right lungs lower lobe.
L superior-drains your left lung’s upper lobe and you lingula.
Aortic (semilunar) valve
Determine the passage of blood between the ventricles and the main arteries, transporting blood away form the heart to the vital organs.
