Blood
Liquid connective tissue that consists of formed elements and plasma, and accounts for 8% of body weight.
What is blood?
The two superior chambers of the heart, which receive blood.
What are the atria?
Thick-walled vessels that carry blood away from the heart and are able to withstand the fluctuations in diameter that result from the pumping action of the heart.
What are arteries?
In this circuit, blood drops off oxygen and nutrients to the body cells and picks up carbon dioxide and wastes.
What is the systemic circuit?
Known as the "pacemaker of the heart".
What is the sinoatrial (SA) node?
Cells that transport oxygen and carbon dioxide between the lungs and body cells.
What are erythrocytes (RBCs)?
The two inferior chambers of the heart, which pump blood into the great vessels.
What are ventricles?
Vessels that contain valves and transport blood toward the heart.
What are veins?
In this circuit, blood picks up oxygen and drops off carbon dioxide.
What is the pulmonary circuit?
A complete relaxation (diastole) and contraction (systole) of both the atria and ventricles.
What is the cardiac cycle?
Cells that defend the body against infection and disease.
What are leukocytes (WBCs)?
The side of the heart responsible for pumping blood into the pulmonary circuit.
What is the right side (right atrium and right ventricle)?
Small vessels that supply blood directly to the tissues.
What are capillaries?
A change in diameter of blood vessels that causes higher resistance and increases pressure.
What is vasoconstriction?
Caused by failure of the cardiac valves to operate properly, producing turbulent blood flow within the heart.
What is a heart murmur?
What is hematopoiesis?
The side of the heart responsible for pumping blood into the systemic circuit.
What is the left side (left atrium and left ventricle)?
The most common type of capillaries, which are found in almost all tissues.
What are continuous capillaries?
A change in diameter of blood vessels that causes lower resistance and decreases pressure.
What is vasodilation?
The product of multiplying heart rate by stroke volume.
What is cardiac output?
The final and most effective phase of hemostasis, in which liquid plasma is converted into a solid gel and fibrin threads provide a network to stabilize the clot.
What is coagulation?
Prevent backflow of blood when ventricular pressure rises.
What are atrioventricular valves?
The middle layer of vessels, which is very thick in arteries and mainly composed of smooth muscle tissue.
What is the tunica media?
The volume of blood moved through a blood vessel or organ per unit of time (such as liters/minute).
What is blood flow?
What are conductive cells?