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U2L08
AP Biology B
| Question | Answer |
|---|---|
| A vessel that conveys blood between an artery and a capillary bed. | Arterioles |
| A chamber of the vertebrate heart that receives blood from the veins and transfers blood to a ventricle. | Atrium (plural, atria) |
| A branch of the circulatory system in many amphibians that supplies the lungs and skin. | Pulmocutaneous circuit |
| The frequency of heart contraction (in beats per minute). | Heart rate |
| A heart valve located between each atrium and ventricle that prevents a backflow of blood when the ventricle contracts. | Atrioventricular (AV) valve |
| A hissing sound that most often results from blood squirting backward through a leaky valve in the heart. | Heart murmur |
| A region of specialized heart muscle tissue between the left and right atria where electrical impulses are delayed for about 0.1 second before spreading to both ventricles and causing them to contract. | Atrioventricular (AV) node |
| A decrease in the diameter of blood vessels caused by contraction of smooth muscles in the vessel walls. | Vasoconstriction |
| The liquid matrix of blood in which the blood cells are suspended. | Plasma |
| A hormone that stimulates the production of erythrocytes. It is secreted by the kidney when body tissues do not receive enough oxygen. | Erythropoietin (EPO) |
| A particle in the blood made up of thousands of cholesterol molecules and other lipids bound to a protein. HDL scavenges excess cholesterol. | High-density lipoprotein (HDL) |
| The uptake of molecular oxygen from the environment and the discharge of carbon dioxide to the environment. | Gas exchange |
| In insects, a system of branched, air-filled tubes that extends throughout the body and carries oxygen directly to cells. | Tracheal system |
| The portion of the respiratory tract containing the vocal cords; also called the voice box. | Larynx |
| A breathing system in which air is forced into the lungs. | Positive pressure breathing |
| The volume of air a mammal inhales and exhales with each breath. | Tidal volume |
| The maximum volume of air that a mammal can inhale and exhale with each breath | Vital capacity |
| The amount of air that remains in the lungs after forceful exhalation. | Residual volume |
| A protein that transports oxygen in blood or hemolymph. | Respiratory pigments |
| An oxygen-storing, pigmented protein in muscle cells. | Myoglobin |
Created by:
jtaylor422
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