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External Anatomy
Internal Anatomy
Cardiac Cycle
Circulatory system
Other
100
The aorta arises from this chamber of the heart
Left ventricle
100
This is the thicker (more muscular) ventricle
The left ventricle
100
These valves open during contraction of the heart
The aortic and pulmonic valves
100

The vessels that carry blood away from the heart. 

The Arteries

100
This is a test that checks the electrical activity of the heart
EKG
200
The pulmonary veins enter this chamber of the heart
Left atrium
200
This valve lies between the right atrium and ventricle
The tricuspid valve
200
The closure of these valves make the first heart sound
The tricuspid and mitral valves
200

These are known as the vessels that carry blood toward the heart. 

Veins

200
This node is the master pacemaker of the heart
SA node
300
The fibrous sac that encloses the heart
The pericardium
300
This is the number of semilunar valve cusps that make up the aortic valve
Three
300
These valves are closed during ventricular filling
The aortic and pulmonic valves
300

High pressure, High resistance system that delivers red/oxygenated blood to the body and bring back blue/deoxygenated blood.

Systemic Circulatory System

300

resistance the heart must pump against. 

Afterload

400
This vein travels in the coronary sulcus and empties into the right atrium
The coronary sinus
400
These muscles attach to the chordae tendineae and help prevent the atrioventricular valve from being everted into the atrium
The papillary muscles
400
This is the phase of the cardiac cycle when the heart contracts to pump blood into the aorta
Systole
400

Low pressure, low resistance system that exchanges blue/deoxygenated blood for red/oxygenated blood with high O2. 

Pulmonary Circulatory System

400

Nervous system that accelerates the HR, as occurs with the fight or flight response. 

Sympathetic Nervous System

500
The apex of the heart is located under this intercostal space
5th left intercostal space
500
This is the remnant of the foramen ovale
The fossa ovalis
500
This wave represents atrial depolarization on the EKG
P wave
500

The vessels that bridge the arterioles and venules together.

Capillaries

500

What are the layers of the heart wall from internal to external?

Endocardium, Myocardium, Epicardium layer, pericardial space, parietal layer, pericardium