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Anatomy Week 10 Quiz
| Question | Answer |
|---|---|
| Which division of the autonomic nervous system sends fibers to the heart? | sympathetic and parasympathetic |
| During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? | it flows into the inferior vena cava |
| The outermost layer of the larger blood vessels is the tunica | adventitia |
| In _____, blood moves from veins to other veins or arteries to other arteries without passing through an intervening capillary network. | vascular anastomoses |
| _____ is used to determine the volume percentage of red blood cells in whole blood. | hematocrit |
| 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 |
| The brachiocephalic vein drains blood from the | head, neck, and upper extremities. |
| The term blood type refers to the type of blood cell | antigen |
| A glycoprotein hormone that is secreted to increase oxygen concentration in the tissues is | erythropoietin |
| 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 |
| The normal ECG is composed of all of the following except a | E wave; it does contain a P wave, a QRS complex, and a T wave. |
| The type of membranous tissue that lines the heart and blood vessels is the | endothelium |
| A decrease in the amount of white blood cells is called | leukopenia |
| The _____ drains much of the superficial leg and foot. | great saphenous vein |
| Which types of arteries are also called conducting arteries and include the aorta? | elastic arteries |
| The molecule that makes up 95% of the dry weight of each red blood cell and is responsible for the red pigment is | hemoglobin |
| Neutrophils are highly mobile and phagocytic. They migrate out of blood vessels and into tissue spaces. This process is called | diapedesis |
| Microscopic vessels that carry blood from small arteries to small veins are | capillaries |
| The four structures that compose the conduction system of the heart are the | SA node, AV node, AV bundle, and Purkinje fibers. |
| The bulk of the heart wall is the thick, contractile middle layer called the | myocardium |
| The free edges of the atrioventricular valves are anchored to the | papillary muscles |
| A graphic record of the heart’s electrical activity is a(n) | ECG |
| Erythrocytes begin their maturation sequence in red bone marrow from nucleated cells known as: | hematopoietic stem cells |
| Renal veins drain blood from the | kidneys |
| After blood leaves the lungs and returns to the heart, it enters the | left atrium |
| Platelets play an important role in | blood clotting |
| Mechanical devices that permit the flow of blood in one direction only are called | valves |
| 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 |
| Which layer of the larger blood vessels is made up of endothelium? | tunica intima |
| Which of the following is not a formed element found in the blood? | plasma |
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Janelleu4771
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