EBK HUMAN PHYSIOLOGY
15th Edition
ISBN: 8220106796238
Author: Fox
Publisher: YUZU
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Chapter 13, Problem 12RA
Summary Introduction
To determine:
The function of platelets.
Introduction:
Blood elements that are disc-shaped and irregular are known as platelets. They are derived from the large fragments of cells in the bone marrow known as megakaryocytes. They are small structures without nucleus. The platelets are also known as thrombocytes.
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Chapter 13 Solutions
EBK HUMAN PHYSIOLOGY
Ch. 13 - State the components of the circulatory system...Ch. 13 - Prob. 1bCPCh. 13 - Prob. 2CPCh. 13 - Prob. 3CPCh. 13 - Describe how the rate of erythropoiesis is...Ch. 13 - Prob. 5aCPCh. 13 - Prob. 5bCPCh. 13 - Using a flow diagram (arrows), describe the...Ch. 13 - Use a flow diagram to describe the systemic...Ch. 13 - List the AV valves and the valves of the pulmonary...
Ch. 13 - Discuss how defective valves affect blood flow...Ch. 13 - Prob. 7bCPCh. 13 - Prob. 8aCPCh. 13 - Prob. 8bCPCh. 13 - Draw a figure to illustrate the pressure...Ch. 13 - Prob. 10aCPCh. 13 - Using a line diagram, illustrate a myocardial...Ch. 13 - Draw an ECG and label the waves. Indicate the...Ch. 13 - Draw a figure that shows the relationship between...Ch. 13 - Prob. 11cCPCh. 13 - Prob. 12aCPCh. 13 - Prob. 12bCPCh. 13 - Explain the functions of capillaries and describe...Ch. 13 - Prob. 14CPCh. 13 - Prob. 15CPCh. 13 - Identify normal and pathological causes of...Ch. 13 - Prob. 16bCPCh. 13 - Prob. 17aCPCh. 13 - Explain how the lymphatic system and the...Ch. 13 - Prob. 18CPCh. 13 - Prob. 1RACh. 13 - All arteries in the body contain oxygen-rich blood...Ch. 13 - The "lub," or first heart sound, is produced by...Ch. 13 - The first heart sound is produced at
Ch. 13 - Changes in the cardiac rate primarily reflect...Ch. 13 - Prob. 6RACh. 13 - Prob. 7RACh. 13 - The cells that normally have the fastest rate of...Ch. 13 - Which of these statements is true? a. The heart...Ch. 13 - Prob. 10RACh. 13 - Prob. 11RACh. 13 - Prob. 12RACh. 13 - Prob. 13RACh. 13 - Prob. 14RACh. 13 - Prob. 15RACh. 13 - During the phase of isovolumetric relaxation of...Ch. 13 - Peristaltic waves of contraction move fluid within...Ch. 13 - Describe how the pacemaker cells produce a...Ch. 13 - What characteristic of the SA node distinguishes...Ch. 13 - Compare the duration of the heart's contraction...Ch. 13 - Step by step, describe the pressure changes that...Ch. 13 - Can a detective valve be detected by an ECG? Can a...Ch. 13 - Describe the causes of the P, QRS, and T waves of...Ch. 13 - The lungs are the only organs that receive the...Ch. 13 - Prob. 25RACh. 13 - Prob. 26RACh. 13 - Prob. 27RACh. 13 - Prob. 28RACh. 13 - Prob. 29RACh. 13 - Prob. 30RACh. 13 - Prob. 31RACh. 13 - Prob. 32RACh. 13 - Prob. 33RACh. 13 - Prob. 34RACh. 13 - Prob. 35RACh. 13 - Prob. 36RACh. 13 - Prob. 37RACh. 13 - Prob. 38RACh. 13 - Prob. 39RACh. 13 - Prob. 40RACh. 13 - Prob. 41RACh. 13 - Prob. 42RA
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- Which one of the following influences is not associated with thrombus formation? A. Endothelial injury B. Blood hypocoagulability C. Stasis of blood flow D. Turbulence associated with blood flowarrow_forwardA clot is best described as a. an aggregation of platelets. b. a fibrin network with trapped formed elements. c. agglutination of erythrocytes. d. All of these contribute to the formation of a clot.arrow_forwardWhich of the following circulating substances binds to subendothelium to initiate the formation of a platelet plug during vessel injury? A. Factor XII (Hageman factor) B. FibrinogenC. PlasminogenD. Platelet glycoprotein IIb/IIIa E. Thrombin F. von Willebrand factorarrow_forward
- Which of the following statements are true of chemical blood clotting? (Read carefully and select all of the correct statements.) A. Fibrinogen is changed to fibrin in stage 1 of clotting. OB. Stage 1 is the prothrombin activator is formed. OC. Calcium ions are needed for all three stages of clotting. D. The endothelium of blood vessels is smooth and helps prevent abnormal clotting. E. Many of the clotting factors are produced by the liver, but some are produced by the spleen. F. The actual clot is made of fibrin. 100000000 G. The purpose of fibrinolysis is to strengthen a newly formed clot. H. Prothrombin activator changes thrombin to prothrombin. DAMARI Type here to search Ei O E $arrow_forwardA blockage in a blood vessel caused by a mass of matter in the blood is called a(n): a. thrombocyte. b. thrombosis. c. embolus. d. thrombus. e. embolism.arrow_forwardWhich of the following is True?a. Arteriole diameter is controlled by nerves, hormones,and chemicals from nearby tissues.b. The sympathetic nervous systems causes constriction ofarterioles in hot conditions.c. Precapillary sphincters are controlled by the nervoussystem.d. In response to major blood loss, the veins and arteriesincrease in diameter.arrow_forward
- . The extrinsic pathway of coagulation is initiated by a. platelets. b. fibrinogen. c. factor VIII. d. damage to tissue.arrow_forwardThe force that causes tissue fluid to enter lymphatic capillaries is the ______ Group of answer choices A. filtration pressure in capillaries. B. hydrostatic pressure of interstitial fluid. C. colloid osmotic pressure in blood capillaries. D. blood pressure in capillaries. E. osmotic pressure of interstitial fluid.arrow_forwardMark the following statements as true or false. If a statement is false, correct it to make a true statement a. Arteries are the exchange vessels of the cardiovascular system. b. The tunica intima is composed of a sheet of endothelium, connective tissue, and the internal elastic lamina. c. The tunica media consists of smooth muscle cells innervated by vasomotor nerves. d. Muscular arteries control blood flow at the tissue level. e. Veins have smaller lumens, more elastic fibers, and more smooth muscle than arteries.arrow_forward
- Which of the following statements is (are) true concerning the pathways for blood clotting?a. The intrinsic pathway takes less time than the extrinsic pathway.b. The intrinsic and extrinsic pathways require sodium.c. The intrinsic pathway is started by factors from damaged tissues.d. The intrinsic pathway requires the same clotting factors as the extrinsic pathway.e. The common pathway results in fibrin changing to fibrinogenarrow_forwardWhich protein forms a bridge between exposed vessel wall collagen and platelet surface receptors? Select one: a. von Willebrand factor b. Thromboxanes c. Endothelin d. Fibrinogenarrow_forwardPlatelet plug formation occurs at which point? a. when large megakaryocytes break up into thousands of smaller fragments b. when platelets are dispersed through the bloodstream c. when platelets are attracted to a site of blood vessel damage d. none of the abovearrow_forward
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