Circulatory System Flashcards
- The largest artery in the body.
- It carries oxygen-rich blood away from the heart to vessels that reach the rest of the body
AORTA
The chambers of the heart, to which the blood returns from the circulation.
ATRIA
- The smallest of the body’s blood vessels.
- Oxygen and glucose pass through capillary walls and enter the cells.
- Waste products such as carbon dioxide pass back from the cells into the blood through capillaries.
Capillaries
Any of the four heart valves that regulate the flow of blood through the chambers of the heart.
Cardiac Valves
Oxygen-poor blood.
Deoxygenated blood
The hollow, muscular organ that maintains the circulation of the blood.
HEART
The lower right and left chambers of the heart.
HEART VENTRICLES
Is the stout wall separating the lower chambers (the ventricles) of the heart from one another.
INTERVENTRICULAR SEPTUM
One of a pair of organs in the chest that supplies the body with oxygen, and removes carbon dioxide from the body.
LUNGS
The muscular substance of the heart; the middle of the three layers forming the outer wall of the human heart.
MYOCARDIUM
Oxygen-rich blood.
OXYGENATED BLOOD
The pulmonary artery and its branches deliver blood rich in carbon dioxide (and lacking in oxygen) to the capillaries that surround the air sacs.
PULMONARY ARTERY
The circulation of the blood through the lungs.
PULMONARY CIRCULATION
The veins that return the oxygenated blood from the lungs to the left atrium of the heart.
PULMONARY VEINS
The large vein that carries blood from the head, neck, arms, and chest to the heart.
SUPERIOR VENA CAVA
A large vein which returns blood from the head, neck and extremities to the heart
VENA CAVA
2 Divisions of Circulatory System
CARDIOVASCULAR SYSTEM
LYMPHATIC SYSTEM
IN ORDER TO FUNCTION AS A PUMP THE HEART MUST HAVE:
- Both receiving and delivering chambers
- Valves to direct the flow of the blood
- Wall that is strongly compressible and provides the force to propel blood
- Vessels to deliver blood to and from the heart
RIGHT ATRIUM
LEFT ATRIUM
RIGHT VENTRICLE
LEFT VENTRICLE
CHAMBERS OF THE HEART
MITRAL VALVE
TRICUSPID VALVE
AORTIC VALVE
PULMONARY VALVE
VALVES OF THE HEART
ATRIOVENTRICULAR VALVES
Right tricuspid valve
Mitral Valve
SEMILUNAR VALVES
PULMONARY SEMILUNAR VALVES
AORTIC SEMILUNAR VALVES
WALLS OF THE HEART
EPICARDIUM
MYOCARDIUM
ENDOCARDIUM
VESSELS OF THE HEART
ARTERY
VEIN
CAPILLARY
