A&P II Lab 3: Anatomy of the Heart

Right atrium

Right ventricle

Left atrium

Left ventricle

Tricuspid valve

Mitral (bicuspid) valve

Pulmonary semilunar valve

Aortic semilunar valve

Pulmonary trunk

Aorta

Papillary muscles

Chordae tendinae

trabeculae carneae

Pectinate muscles

Interventricular septum

Apex

Base

auricles

coronary sinus

fossa ovalis

anterior interventricular artery

posterior interventricular artery

left coronary artery

right coronary artery

pulmonary veins

pulmonary arteries

pulmonary trunk

vena cava

Function of heart valves

keep blood from flowing back into the heart

Why is the heart muscle thicker on the left side than the right?

The left ventricle pumps blood to entire body, the right ventricle pumps blood to lungs

What would happen to the heart if excess fluid accumulated in pericardial sac?

Cardiac tamponade, compressed heart limits ability to pump blood

How do you treat excess fluid accumulation in pericardial sac?

insert syringe into pericardial cavity and drain excess fluid

intercalated discs

What is the function of intercalated discs?

Improves communication from muscle cell to muscle cell

recieves deoxygenated blood from the superior and inferior vena cava

right atrium

pumps deoxygenated blood to the lungs

right ventricle

receives oxygenated blood from the lungs

left atrium

pumps oxygenated blood to all parts of the body

left ventricle

right atrium and right ventricle make up

pulmonary circuit

left atrium and left ventricle make up

systemic circuit

irregular blood flow through heart

heart murmur

Four important areas used for listening to heart sounds

Aortic area, Pulmonic area, Tricuspid area, Mitral Area (Apex)

blood clot that forms in a vein deep in the body

deep vein thrombosis