Heart Anatomy

Flashcards covering key anatomical structures of the heart, including chambers, vessels, valves, and layers.

inferior

The __ surface of the heart is located at the apex.

left auricle

The __ is a fatty pouch on the left side of the heart that squeezes blood into the atria.

pulmonary trunk

The __ takes deoxygenated blood from the right ventricle to the lungs.

brachiocephalic artery

The __ is the first branch off the aortic arch, splitting into the right subclavian and right common carotid arteries.

superior vena cava

The __ dumps into the right atrium and is formed by the merging of the right and left brachiocephalic veins.

Arteries, veins

take blood away from the heart, while take blood back to the heart.

azygos vein

The __ is a vein that can bypass the inferior vena cava, bringing blood up from the common iliacs.

right coronary artery, left coronary artery

The first arteries to come off of the ascending aorta are the and the .

anterior interventricular artery

About 40% of myocardial infarctions occur within the __ due to blockage.

circumflex

The __ artery wraps around the auricle and supplies the atrial muscular wall and lateral walls of the left ventricle.

great cardiac vein

The __ runs next to the anterior interventricular artery and drains blood from the myocardium.

marginal artery

The __ supplies the lateral walls of the right ventricle.

middle cardiac vein

The __ runs adjacent to the posterior interventricular artery.

coronary sinus

The __ drains into the right atrium.

Arterial anastomoses

__ provide alternative routes for blood flow in case of a clot.

tricuspid valve

The __ separates the right atrium from the right ventricle.

fossa ovalis

The __, formerly the foramen ovale in fetal circulation, is scar tissue in the right atrium.

ductus arteriosus

The __ is a shunt that shunts blood from the pulmonary trunk into the aorta in fetal circulation.

aortic semilunar valve

The __ prevents backflow from the aorta into the left ventricle.

myocardium

The __ is the muscular layer of the heart made up of cardiac muscle.

endocardium

The __ lines the internal chambers of the heart and the valves.

Pectinate, trabeculae carne

muscles are in the anterior wall of the atria, while are in the anterior walls of the ventricles.

epicardium

The outer layer of the heart is the __, made up of simple squamous epithelial tissue and areolar connective tissue.