Pathology, and Physiology, Chapter 11 Flashcards
Aorta
Largest artery in the body
Arteriole
Small artery
Artery
Largest type of blood vessel; carries blood away from the heart to all parts of the body.
Atrium
One of two upper chambers of the heart; (plural, atria)
Capillary
Smallest blood vessel; materials pass to and from the bloodstream through the thin capillary walls.
Coronary Arteries
Blood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle.
Diastole
Relaxation phase of the heartbeat.
Endocardium
Inner lining of the heart.
Mitral Valve
Valve between the left atrium and the left ventricle.
Murmur
abnormal swishing sound caused by improper closure of the heart valves.
Myocardium
muscular, middle layer of the heart.
Sinoatrial Node
Specialized nervous tissue in the right atrium that begins the heartbeat.
Septum
partition or wall dividing a cavity.
sphygmomanometer
instrument to measure blood pressure.
systole
contraction phase of the heartbeat.
tricuspid valve
located between the right atrium and the right ventricle; it has three cusps.
valve
structure in veins or in the heart that temporarily closes an opening so that blood flows in only one direction.
vein
thin walled vessel that carries blood from body tissues and lungs back to the heart. contains valves to prevent backflow.
ventricle
one of two lower chambers of the heart
venule
small vein
arrhythmias
abnormal heart rhythms
flutter
rapid but regular contractions, usually of the atria
fibrillation
very rapid, random, inefficient, and irregular contracts of the heart.
congenital heat diease
abnormalities in the heart at birth