Cardio Identifications Flashcards
Pericardium
Double-walled sac called pericardium
Fibrous pericardium
Superficial tough dense layer of pericardium. It protects the heart, anchors it to its surroundings, and prevents it from overfilling with blood.
Serous pericardium
Thin slippery two layered part of the pericardium located deep to the fibrous pericardium.
Parietal layer
Superior layer of serous pericardium. Attach to the vessels entering and exiting the heart.
Visceral layer
Also known as epicardium, it is the internal layer of the serous pericardium
Pericardial cavity
Slit-like cavity between parietal and visceral layer containing serous fluid. Reduces friction during heart activity
Myocardium
Middle layer of heart wall comprised mainly of cardiac muscle. Responsible for contractions
Endocardium
Lines internal surface of hear chambers and vessels
Right ventricle
Forms majority of anterior surface
Coronary sulcus
Junction of atria and ventricles
Anterior and posterior interventricular sulcus
Junction of ventricles
Auricles
Increase atrial volume
Fossa ovalis
Shallow depression that marks location of foramen ovale in fetal heart
Superior vena cava
Returns blood from body regions superior to diaphragm(head neck arms etc)
Inferior vena cava
Returns blood from body areas below the diaphragm
Coronary sinus
Returns blood from myocardium
4 Pulmonary veins
Return oxygenated blood to left atrium
Papillary muscles
Plays role in valve function
Trabeculae carnea
Muscle ridges on ventricular walls
Right and left coronary arteries
Supply blood to heart itself
Anterior interventricular artery
Supplies blood to interventricular septum and anterior walls of ventricles
Circumflex artery
Supplies blood to left atrium and posterior walls of ventricles
Right marginal artery
Supplies blood to right side of heart
Posterior interventricular artery
Supplies posterior ventricular walls
Cardiac veins
Collect blood from heart and deliver it to coronary sinus
What are the three cardiac veins and where do they arise from?
Great cardiac vein: anterior interventricular sulcus
Middle cardiac vein: posterior interventricular sulcus
Small cardiac vein: inferior surface
Mediastinum
Heart cavity
