Ch. 7.8 Circulatory System Key Terms
is located between the left ventricle and the aorta, the largest artery in the body.
What is the aortic valve?
are abnormal heart rhythms
What are arrhythmias?
carry blood away from the heart.
What are arteries?
is often called a tissue because it contains many kinds of cells.
What is blood?
connect arterioles with venules, the smallest veins.
What are capillaries?
also known as the cardiovascular system, is often referred to as the 'transportation' system of the body.
What is the circulatory system?
a brief period of rest
What is a diastole?
is a smooth layer of cells that lines the inside of the heart and is continuous with the inside of blood vessels.
What is the endocardium?
Red blood cells
What are erythrocytes?
a complex protein composed of the protein molecule called globin and the iron compound called heme.
What is hemoglobin?
receives oxygenated blood from the lungs.
What is the left atrium?
receives blood from the left atrium and pumps the blood into the aorta for transport to the body cells.
What is the left ventricle?
White blood cells
What are leukocytes?
is located between the left atrium and left ventricle.
What is the mitral valve?
the muscular middle layer.
What is the myocradium?
is a double-layered membrane, or sac, that covers the outside of the heart.
What is the pericardium?
is approximately 90 percent water, with many dissolved, or suspended, substances.
What is plasma?
is located between the right ventricle and the pulmonary artery, a blood vessel that carries blood to the lungs.
What is the pulmonary valve?
receives blood as it returns from the body cells.
What is the right atrium?
receives blood from the right atrium and pumps the blood into the pulmonary artery, which carries the blood to the lungs for oxygen.
What is the right ventricle?
is a muscular wall that separates the heart into a right side and a left side.
What is the septum?
a period of ventricular contraction
What is a systole?
also called platelets, are usually described as fragments or pieces of cells because they lack nuclei and vary in shape and size.
What are thrombocytes?
is located between the right atrium and the right ventricle.
What is the tricuspid valve?
are blood vessels that carry blood back to the heart.
What are veins?