Lab 9 - ZOOL 2403: Cardiovascular System – Heart

Flashcards covering key terms and structures of the cardiovascular system focusing on the heart.

The __________ is important for the heart's conduction system.

Sinoatrial node.

The __________ separates the right and left ventricles.

Interventricular septum.

The __________ connects the papillary muscles to the atrioventricular valves.

Chordae tendineae.

The __________ is the structure where deoxygenated blood returns to the heart from the lower body.

Inferior vena cava.

The ____ is the highest point of the heart, located at the bottom of the ventricles. Yellow

Apex.

The __________ is the chamber of the heart that receives deoxygenated blood from the body through the superior and inferior vena cavae. (Red)

Right atrium.

The __________ is the chamber of the heart that pumps deoxygenated blood to the lungs through the pulmonary artery. Orange

Right ventricle.

The __________ is the chamber of the heart that pumps oxygenated blood to the body through the aorta. Green

Left ventricle.

The __________ is the largest artery in the body that carries oxygenated blood from the heart to the rest of the body.

Aorta.

The __________ is the major vessel that carries deoxygenated blood from the right ventricle to the lungs for oxygenation.

Pulmonary trunk.

The __________ carries deoxygenated blood from the right ventricle to the right lung for oxygenation.

Right pulmonary artery.

The __________ carries deoxygenated blood from the right ventricle to the left lung for oxygenation.

Left pulmonary artery.

The __________ carries oxygenated blood from the right lung to the left atrium.

Right pulmonary vein.

The __________ is the structure that carries deoxygenated blood from the upper body to the heart.

Superior vena cava.

The __________ is the remnant of the ductus arteriosus that connects the pulmonary artery to the aorta in the fetus, now serving as a fibrous cord in adults.

Ligamentum arteriosum.

The __________ artery supplies oxygenated blood to the left side of the heart, branching into the circumflex artery and the left anterior descending artery.

Left coronary artery.

The __________ artery branches off the left coronary artery and supplies oxygenated blood to the left atrium and the lateral aspect of the left ventricle.

Circumflex artery.

The __________ artery supplies oxygenated blood to the anterior part of the interventricular septum and the anterior walls of both ventricles.

Anterior interventricular artery.

The  artery supplies oxygenated blood to the right side of the heart, branching into the right marginal artery and the posterior interventricular artery.

Right coronary artery.

The _ artery supplies oxygenated blood to the posterior part of the interventricular septum and the posterior walls of both ventricles.

Posterior interventricular artery.

The \\\\\\\\\_ is a major vessel that drains deoxygenated blood from the heart muscle back toward the right atrium.

Great cardiac vein.

The _________ is a major vessel that drains deoxygenated blood from the posterior aspect of the heart back toward the right atrium.

Middle cardiac vein.

The \\\\\\\\\_ is a large venous channel that collects deoxygenated blood from the heart muscle and drains it into the right atrium.

Coronary sinus.

The __________ is a muscular structure located in the atria, characterized by parallel ridges that increase the surface area of the atrial walls.

Pectinate muscle.

The \\\\\\\\ is a remnant of the foramen ovale, an opening in the fetal heart that allows blood to bypass the right ventricle and go directly to the left atrium.

Fossa ovalis.

The __________ are the muscles found in the ventricles of the heart.

Trabeculae carneae.

The \\\\\\\\\_ are conical muscles located in the ventricles that attach to the chordae tendineae, helping to prevent prolapse of the atrioventricular valves during ventricular contraction.

Papillary muscles.

The _________ is one of the two atrioventricular valves in the heart, located between the left atrium and left ventricle, and it helps to prevent the backflow of blood during ventricular contraction.

Bicuspid valve.

The _________ is one of the two atrioventricular valves in the heart, located between the right atrium and right ventricle, and it helps to prevent the backflow of blood during ventricular contraction.

Tricuspid valve.

The \\\\\\\\\_ is a valve located between the left ventricle and the aorta, preventing the backflow of blood into the ventricle after it has been pumped into the aorta.

Aortic semilunar valve.

The _________ is a valve located between the right ventricle and the pulmonary artery, preventing backflow of blood into the ventricle after it has been pumped into the pulmonary artery.

Pulmonic semilunar valve.

The \\\\\\\\ is part of the heart's conduction system and relays electrical impulses from the atria to the ventricles.

Atrioventricular node.

The _________ is a collection of heart muscle cells that conducts electrical impulses from the atrioventricular node to the ventricles.

Atrioventricular bundle.

The \\\\\\\\ is a network of fibers that conduct electrical impulses throughout the ventricles, ensuring coordinated contraction of the heart muscle.

Purkinje fibers.

The ______ is the chamber of the heart that receives oxygenated blood from the pulmonary veins and delivers it to the left ventricle. Blue

Left atrium.