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week 10
Heart and Blood
| Question | Answer |
|---|---|
| The bulk of the heart wall is the thick, contractile middle layer called the | Myocardium. |
| Which of the following is not a formed element found in the blood? | plasma |
| From which vessels do myocardial cells receive blood? | coronary arteries |
| Mechanical devices that permit the flow of blood in one direction only are called | Valves. |
| Blood from the brachiocephalic vein drains into the | head, neck, and upper extremity. |
| Platelets play an important role in | blood clotting. |
| Neutrophils are highly mobile and phagocytic. They migrate out of blood vessels and into tissue spaces. This process is called | diapedesis. |
| Atria are often called _____ because they receive blood from vessels called veins. | receiving chambers |
| _____ is used to determine the volume percentage of red blood cells in whole blood. | Hematocrit |
| During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? | It flows into the inferior vena cava. |
| Which layer of the larger blood vessels is made up of endothelium? | tunica intima |
| All of the following are granulocytes except | lymphocytes. |
| Renal veins drain blood from the | Kidneys. |
| The normal ECG is composed of all of the following except a | E wave. |
| The type of membranous tissue that lines the heart and blood vessels is the | endothelium. |
| The _____ is(are) supplied with blood from the left subclavian artery. | head and upper extremities |
| The term blood type refers to the type of blood cell | antigen. |
| The _____ drains much of the superficial leg and foot. | great saphenous vein |
| The heart valves that are located where the trunk of the pulmonary artery joins the right ventricle and where the aorta joins the left ventricle are called | semilunar valves. |
| During fetal circulation, what opening in the septum, between the right and left atria, directs most of the blood so that it bypasses the fetal lungs? | foramen ovale |
| The normal cardiac impulse that initiates mechanical contraction of the heart arises in the | SA node. |
| Blood flow from the heart through blood vessels to all parts of the body and back to the heart is referred to as _____ circulation. | systemic |
| A graphic record of the heart’s electrical activity is a(n) | ECG. |
| Which sphincters function as regulatory valves that reduce the flow of blood through a network of capillaries when they contract and constrict the arterioles? | precapillary sphincters |
| Erythrocytes begin their maturation sequence in red bone marrow from nucleated cells known as: | hematopoietic stem cells. |
| The internal iliac artery supplies blood to the | pelvis. |
| Microscopic vessels that carry blood from small arteries to small veins are | capillaries. |
| A glycoprotein hormone that is secreted to increase oxygen concentration in the tissues is | Erythropoietin. |
| The four structures that compose the conduction system of the heart are the | SA node, AV node, AV bundle, and Purkinje fibers. |
| The heart has its own special covering, a loose-fitting inextensible sac called the | pericardium. |
Created by:
Sandoval.Sam
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