Ch. 7.8 Circulatory System Key Terms
is located between the left ventricle and the aorta, the largest artery in the body. It closes when the left ventricle is finished contracting, allowing blood to flow into the aorta and preventing blood from flowing back into the left ventricle.
aortic valve
also known as the cardiovascular system, is often referred to as the "transportation" system of the body. It consists of the heart, blood vessels, and blood. It transports nutrients and wastes, oxygen and carbon dioxide, hormones, and antibodies contained in the blood.
circulatory system
receives oxygenated blood from the lungs
left atrium
is a double-layered membrane, or sac, that covers the outside of the heart.
Pericardium
is a muscular wall that separates the heart into a right side and a left side. It prevents blood from moving between the right and left sides of the heart.
Septum
are abnormal heart rhythms and can be mild to life threatening.
Arrhythmias
the cycle consists of a brief period of rest, called
Diastole
receives blood from the left atrium and pumps the blood into the aorta for transport to the body cells.
left ventricle
is approximately 90 percent water, with many dissolved, or suspended, substances.
Plasma
The cycle consists of a brief period of rest, called diastole, followed by a period of ventricular contraction, called
Systole
carry blood away from the heart.
Arteries
is a smooth layer of cells that lines the inside of the heart and is continuous with the inside of blood vessels. It allows for the smooth flow of blood.
Endocardium
or white blood cells, are not as numerous as are erythrocytes. They are formed in the bone marrow and lymph tissue and usually live about 3-9 days.
Leukocytes
is located between the right ventricle and the pulmonary artery, a blood vessel that carries blood to the lungs.
pulmonary valve
also called platelets, are usually described as fragments or pieces of cells because they lack nuclei and vary in shape and size.
Thrombocytes
that flows through the circulatory system is often called a tissue because it contains many kinds of cells.
Blood
or red blood cells, are produced in the red bone marrow at a rate of about one million per minute
Erythrocytes
is located between the left atrium and left ventricle.
mitral valve
receives blood as it returns from the body cells.
right atrium
the cells to enter the capillaries. — are blood vessels that carry blood back to the heart.
Veins
connect arterioles with venules, the smallest veins. — are located in close proximity to almost every cell in the body.
Capillaries
a complex protein composed of thew protein molecule called globin and the iron compound called heme.
Hemoglobin
The thickest layer is the
Myocardium
receives blood from the right atrium and pumps the blood into the pulmonary artery, which carries the blood to the lungs for oxygen.
right ventricle
valve is located between the right atrium and the right ventricle.
tricuspid valve