Heart Anatomy
What blood vessels carry blood away from the heart?
Arteries
What blood component carries oxygen throughout the body?
What vessels have the thickest walls to handle high pressure?
Arteries
Which half of the heart contains deoxygenated blood?
The right side of the heart
What blood component makes up most of blood’s volume?
Plasma
What blood vessels carry blood towards the heart?
Veins
What is the main function of hemoglobin?
To carry oxygen in red blood cells
What vessels contain valves to prevent blood from flowing backward?
Veins
Oxygenated blood is carried FROM THE LUNGS to what chamber of the heart?
The left atrium
What component of blood helps form clots?
Platelets
What is the function of the heart’s valves?
To prevent backflow of blood
What blood vessels allow for gas exchange?
Capillaries
What vessels have a thin wall, allowing gas exchange?
Capillaries
What generates an electrical signal that causes the atria to contract? (known as the pacemaker of the heart)
sinoatrial (SA) node
What is the medical name for Red Blood Cells?
Erythrocytes
What structure separates the left and right ventricles?
Septum
What type of circulation is the largest in the body?
systemic circulation
What is the function of the coronary arteries?
To supply the heart muscle with oxygen-rich blood
What hormone increases heart rate during stress?
Adrenaline
What is the medical term for a heart attack?
Myocardial infarction
What chamber of the heart pumps oxygenated blood to the body?
Left ventricle
What type of circulation involves blood flow through the heart itself?
coronary circulation
What type of blood vessel has the largest lumen?
Vein
What type of blood is found in the vena cava?
Deoxygenated blood
What is the name for a circulatory system where blood passes through the heart twice during one complete cycle of the body?
Double circulation