Term
|
Definition
| The right upper chamber of the heart. The right atrium receives deoxygenated blood from the body through the vena cava and pumps it into the right ventricle which then sends it to the lungs to be oxygenated. |
|
|
Term
|
Definition
| The upper right chamber of the heart. The left atrium receives oxygenated blood from the lungs and pumps it down into the left ventricle which delivers it to the body. |
|
|
Term
|
Definition
| Bicuspid valve: One of the four valves of the heart, this valve is situated between the left atrium and the left ventricle. It permits blood to flow one way only, from the left atrium into the left ventricle This valve is more commonly called the mitral valve because it has two flaps (cusps) and looks like a bishop's miter or headdress. |
|
|
Term
|
Definition
| One of the four heart valves, the tricuspid valve is the first one that blood encounters as it enters the heart. The tricuspid valve stands between the right atrium and right ventricle and allows blood to flow only from the atrium into the ventricle. |
|
|
Term
|
Definition
| Either of two valves, one located at the opening of the aorta and the other at the opening of the pulmonary artery, each consisting of three crescent-shaped cusps and serving to prevent blood from flowing back into the ventricles. |
|
|
Term
|
Definition
The largest artery in the body, the aorta arises from the left ventricle of the heart, goes up (ascends) a little ways, bends over (arches), then goes down (descends) through the chest and through the abdomen to where ends by dividing into two arteries called the common iliac arteries that go to the legs.
Anatomically, the aorta is traditionally divided into the ascending aorta, the aortic arch, and the descending aorta. The descending aorta is, in turn, subdivided into the thoracic aorta (that descends within the chest) and the abdominal aorta (that descends within the belly).
The aorta gives off branches that go to the head and neck, the arms, the major organs in the chest and abdomen, and the legs. It serves to supply them all with oxygenated blood. The aorta is the central conduit from the heart to the body. |
|
|
Term
|
Definition
| is the large vein which returns blood to the heart from the head, neck and both upper limbs. The inferior vena cava returns blood to the heart from the lower part of the body.The superior vena cava is located in the middle of the chest and is surrounded by rigid structures and lymph nodes. The structure bordering the superior vena cava include the trachea, aorta, thymus, right bronchus of the lung and pulmonary artery. |
|
|
Term
|
Definition
| A large vein that receives blood from the lower extremities, pelvis and abdomen and delivers it to the right atrium of the heart. |
|
|
Term
|
Definition
One of the two vessels which are formed as terminal branches of the pulmonary trunk and convey unaerated blood to the lungs. The two pulmonary arteries differ in length and anatomy.
The right pulmonary artery is the longer of the two. It passes transversely across the midline in the upper chest and passes below the aortic arch to enter the hilum of the right lung as part of its root.
The left pulmonary artery is the shorter of the two terminal branches of the pulmonary trunk. It pierces the pericardium (the sac around the heart) and enters the hilum of the left lung. |
|
|
Term
|
Definition
| One of four vessels that carry aerated blood from the lungs to the left atrium of the heart. (The four are the right and left superior and inferior pulmonary veins). The pulmonary veins are the only veins that carry bright red oxygenated blood |
|
|
Term
|
Definition
| is a noninvasive test that is used to reflect underlying heart conditions by measuring the electrical activity of the heart. By positioning leads (electrical sensing devices) on the body in standardized locations, information about many heart conditions can be learned by looking for characteristic patterns on the EKG |
|
|
Term
| The carotid artery(using for taking puls,neck) |
|
Definition
| The carotid artery is a major artery located in the front of the neck. Through the carotid artery, blood from the heart goes to the brain. |
|
|
Term
| radial artery(using for taking puls,wrist) |
|
Definition
| the smaller of the two branches into which the brachial artery divides just below the bend of the elbow and which passes along the radial side of the forearm to the wrist then winds backward around the outer side of the carpus and enters the palm between the first and second metacarpal bones to form the deep palmar arch |
|
|
Term
|
Definition
| refers to blood pressure when the heart beats while pumping blood. |
|
|
Term
|
Definition
| refers to blood pressure when the heart is at rest between beats. |
|
|
Term
|
Definition
| is the force of blood pushing against the walls of the arteries as the heart pumps blood. If this pressure rises and stays high over time, it can damage the body in many ways. |
|
|
