Description : Tests of coagulation are used to monitor anticoagulation treatment and detect intrinsic abnormalities in coagulation. Which of the following statement(s) is/are true concerning ... is used to monitor heparin levels intraoperatively during cardiovascular and peripheral vascular operations
Last Answer : Answer: a, c, d Coagulation tests include prothrombin time (PT), which measures the intrinsic and extrinsic pathways of fibrinogen production and is the most common method for ... more while for peripheral vascular applications, values of 250 seconds or greater are considered appropriate
Description : The prothrombin time a. assess the extrinsic pathway of the blood coagulation cascade b. is prolonged in patients with fat absorption c. is increased by warfarin d. is increased by heparin
Last Answer : assess the extrinsic pathway of the blood coagulation cascade
Description : The following are true about blood coagulation: a. heparin inhibits blood coagulation through its interference with vitamin K metabolism in the liver b. addition of vitamin K to freshly drawn ... delays clotting c. thrombin converts fibrinogen to fibrin d. platelets are essential for blood clot
Last Answer : thrombin converts fibrinogen to fibrin
Description : he primary mechanism by which heparin prevents coagulation of blood is: A. Direct inhibition of prothrombin to thrombin conversion B. Facilitation of antithrombin III mediated inhibition of factor Xa and ... of antithrombin III to inhibit factors IX and XI D. Inhibition of factors XIIa and XIIIa
Last Answer : B. Facilitation of antithrombin III mediated inhibition of factor Xa and thrombi
Description : Blood does not clot in the blood vessels due to the presence of – (1) Thrombin (2) Fibrinogen (3) Heparin (4) Prothrombin
Last Answer : (3) Heparin Explanation: There are two major facets of the clotting mechanism — the platelets, and the thrombin system. The thrombin system consists of several blood proteins that, when bleeding occurs, become activated.
Description : Blood does not clot in the blood vessels due to the presence of (1) Thrombin (2) Fibrinogen (3) Heparin (4) Prothrombin
Last Answer : Thrombin
Description : Low concentrations of heparin selectively interfere with the following coagulation pathway(s): A. Intrinsic pathway B. Extrinsic pathway C. Common pathway D. Both ‘A’ and ‘C’
Last Answer : A. Intrinsic pathway
Description : Which of the following is an anticoagulant and checks blood coagulation in blood vessels?
Last Answer : Which of the following is an anticoagulant and checks blood coagulation in blood vessels? A. Prothrombin B. Globulin C. Thromboplatin D. Heparin
Description : Select the action of vasopressin exerted through the V1 subtype receptors: A. Release of coagulation factor VIII and von Willebrands factor from vascular endothelium B. Increased peristalsis of gut C. Dilatation of blood vessels D. Increased water permeability of renal collecting ducts
Last Answer : B. Increased peristalsis of gut
Description : Assertion: Heparin is an anticoagulant found in mammals. Reason: Heparin prevents the conversion of prothrombin to thrombin
Last Answer : Assertion: Heparin is an anticoagulant found in mammals. Reason: Heparin prevents the conversion of ... . If both Assertion & Reason are false.
Description : Assertion `:-` ADH prevents diuresis. Reason `:-` ADH also affect the kidney function by its constrictory effects on blood vessels.
Last Answer : Assertion `:-` ADH prevents diuresis. Reason `:-` ADH also affect the kidney function by its ... . D. If both Assertion & Reason are false.
Description : Assertion`:` Atherosclerosis affects the vessels that supply blood to the heart muscle. Reason`:` It is caused by deposits of calcium, fat, chalestero
Last Answer : Assertion`:` Atherosclerosis affects the vessels that supply blood to the heart muscle. Reason`:` It is ... D. If both Assertion & Reason are false.
Description : Assertion` :` In open circulatory system blood is pumped by heart passes throgh large vessels into open spaces or body cavities called sinuses. Reason
Last Answer : Assertion` :` In open circulatory system blood is pumped by heart passes throgh large vessels into open ... D. If both Assertion & Reason are false.
Description : Assertion `:-` Platelets repair dammaged endothelium of blood vessels. Reason `:` Platelets secrete serotonin which is a vaso constrictor
Last Answer : Assertion `:-` Platelets repair dammaged endothelium of blood vessels. Reason `:` Platelets secrete ... . If both Assertion & Reason are false.
Description : Assertion : The menstrual flow results due to breakdown of endometrial lining of the uterus and its blood vessels . Reason : Rapid fall in the level o
Last Answer : Assertion : The menstrual flow results due to breakdown of endometrial lining of the uterus and its blood ... D. If both Assertion & Reason are False.
Description : Which clotting factor has makes antiheparin `:-`
Last Answer : Which clotting factor has makes antiheparin `:-` A. Serotonin B. Fibrin C. Fibrinogen D. Thromboplastin
Description : A non-functional plasma enzyme is (A) Psudocholinesterase (B) Lipoprotein lipase (C) Proenzyme of blood coagulation (D) Lipase
Last Answer : Answer : D
Description : Which of the following statements about the preparation and storage of blood components is/are true? A. Solutions containing citrate prevent coagulation by binding calcium. B. The ... cells includes development of acidosis, hyperkalemia, and decreased intracellular 2,3DPG (diphosphoglycerate).
Last Answer : Answer: ABD DISCUSSION: After blood has been collected from a donor, it is anticoagulated with a solution containing citrate, which acts by binding calcium. Blood is then separated into its ... transfusion or produce effects other than those predicted based on the content of the unit of blood
Description : Assertion `:` Emulsification is necessary for the digestion of fat. Reason `:` After fats are emulsified, the action of enzyme amylase gets significan
Last Answer : Assertion `:` Emulsification is necessary for the digestion of fat. Reason `:` After fats are emulsified ... D. If both Assertion & Reason are false.
Description : Assertion:- `SF_(6)` cannot be hydrolysed but `SF_(4)` can be. Reason:- Six F atoms in `SF_(6)` prevent the attack of `H_(2)O` on sulphur atom of `SF_
Last Answer : Assertion:- `SF_(6)` cannot be hydrolysed but `SF_(4)` can be. Reason:- Six F atoms in ` ... D. Statement-I is not correct and Statement-II is correct
Description : A closed circulatory system is one in which blood circulates only inside blood vessels. For this reason the blood pressure is higher in animals with closed circulatory system. The ... annelids, cephalopod molluscs and vertebrates. The Circulatory System - Image Diversity: closed circulatory system
Last Answer : What are the advantages of the closed circulatory system over the open circulatory system?
Description : Give reason: Choroid is thick and rich with blood vessels
Last Answer : Choroid has a layer of blood vessels which nourishes the back of the eye.
Description : Assertion :- Nitrous acid `(HNO_(2))` may act as an oxidising agent as well as a reducing agent. Reason :- The oxidation number of Nitrogen remains sa
Last Answer : Assertion :- Nitrous acid `(HNO_(2))` may act as an oxidising agent as well as a reducing agent. ... False. D. If both Assertion & Reason are False.
Description : Assertion : After ovulation ruptured graafian follicle transforms into corpus luteum . Reason : Corpus luteum act as endocrine gland and it is stable
Last Answer : Assertion : After ovulation ruptured graafian follicle transforms into corpus luteum . Reason : Corpus ... If both Assertion & Reason are False.
Description : The purpose of an impressed current cathodic protection system aboard ship is to _______________. A. prevent corrosion of the hull, propeller, rudder and line shafting B. neutralize the vessel's ... the presence of salt air D. maintain a minimum constant alternator load to prevent overheating
Last Answer : Answer: A
Description : During hemdialysis process I. blood drained from a conveniend artery and anticoagulant is added (heparin). II. Removal of nitrogenous waste from blood
Last Answer : During hemdialysis process I. blood drained from a conveniend artery and anticoagulant is added (heparin). II. ... D. `I rarr IV rarr II rarr III`
Description : Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin ?
Last Answer : Which type of white blood cells are concerned with the release of histamine and the natural ... Eosinophils B. Monocytes C. Neutrophils D. Basophils
Description : Blood does not coagulate inside the body due to the presence of (a) haemoglobin (b) heparin (c) fibrin (d) plasma
Last Answer : Ans:(b)
Description : Blood does not coagulate inside the body due to the presence of – (1) Plasma (2) Haemoglobin (3) Heparin (4) Fibrin
Last Answer : (3) Heparin Explanation: Heparin is a naturally-occurring anticoagulant produced by basophils and mast cells. Heparin acts as an anticoagulant, preventing the formation of clots and extension of existing clots ... is present in the walls of blood vessels where it doesn't allow blood to clot.
Description : Which is the anticoagulant substance in blood? (1) Fibrinogen (2) Heparin (3) Thrombin (4) Globin
Last Answer : (2) Heparin Explanation: Heparin, a highly sulfated glycosaminoglycan, is widely used as an inject able anticoagulant, and has the highest negative charge density of any known ... because blood anti-coagulation is achieved mostly by heparin sulfate proteoglyeans derived from endothelial cells.
Description : You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes ... bicarbonate (b) Chilled test tube (c) Test tube containing heparin (d) Test tube containing sodium oxalate
Last Answer : (a) Test tube containing calcium bicarbonate
Description : Which type of white blood cells are concerned with the release of histamine and the natural anticoagulant heparin? (a) Eosinophils (b) Monocytes (c) Neutrophils (d) Basophils
Last Answer : d) Basophils
Description : The following is true of heparin except: A. Sudden stoppage of continuous heparin therapy causes rebound increase in blood coagulability B. High doses of heparin inhibit platelet aggregation ... active circulating anticoagulant D. Heparin clears lipemic plasma in vivo but not in vitro
Last Answer : C. Heparin is the physiologically active circulating anticoagulant
Description : Blood does not coagulate inside the body due to the presence of (1) Plasma (2) Haemoglobin (3) Heparin (4) Fibrin
Last Answer : Heparin
Description : Blood fails to clot white flowing in the blood vessel because of the presence of (1) Heparin (2) Prothrombin (3) Haemoglobin (4) Hirudin
Description : Which is the anti-coagulant substance in blood? (1) Fibrinogen (2) Heparin (3) Thrombin (4) Globin
Description : Which Blood Cell Helps Blood Coagulation ?
Last Answer : : Molecules help in blood clotting in the process of endophagositosis.
Description : Which of the following does not play a role in blood coagulation
Last Answer : Which of the following does not play a role in blood coagulation A. Vitamin K B. Vitamin D C. Calcium ions D. Fibrinogen
Description : During the process of blood coagulation, vitamin K helps in
Last Answer : During the process of blood coagulation, vitamin K helps in A. Formation of thromboplastin B. ... to thrombin D. Conversion of fibrinogen to fibrin
Description : Which of the following substances, if introdced into the blood system, would cause coagulation of blood at the site of its introduction
Last Answer : Which of the following substances, if introdced into the blood system, would cause coagulation of ... B. Fibronogen C. Heparin D. Prothrombin
Description : Protein required for coagulation of blood is
Last Answer : Protein required for coagulation of blood is A. haemoglobin B. Globulin C. Fibrinogen D. Albumin
Description : Which is unrelated to blood coagulation ?
Last Answer : Which is unrelated to blood coagulation ? A. Fibrinogen B. Fibrin C. Bilirubin D. Calcium
Description : The coagulation of blood occurs due to
Last Answer : The coagulation of blood occurs due to A. Destruction of erythrocytes B. Destruction of leucocytes ... of fibrinogen into fibrin D. Formation of serum
Description : The exclusive function of iron in the body is confined to the process of (A) Muscular contraction (B) Nerve excitation (C) Cellular respiration (D) Blood coagulation
Last Answer : Answer : C
Description : Laboratory monitoring of coagulation and anticoagulation includes testing of platelet function. Which of the following statements is/are true concerning tests of platelet function? a. A ... platelet aggregation should be part of the standard preoperative evaluation of patients using aspirin
Last Answer : Answer: a, c Tests of platelet function include peripheral platelet counts, bleeding times, and platelet aggregation. Usually, a platelet count of 50,000/mL or more ensures adequate hemostasis ... is not available in most laboratories, probably because of the observer-dependent nature of the test
Description : The evaluation of a patient scheduled for elective surgery should always include the following as tests of hemostasis and coagulation: A. History and physical examination. B. Complete blood count ( ... (APTT). D. Studies of platelet aggregation with adenosine diphosphate (ADP) and epinephrine.
Last Answer : Answer: A DISCUSSION: The evaluation of most patients scheduled for elective surgery who do not have a history of significant bleeding disorders is somewhat controversial. An adequate history and ... suspected of having qualitative defects of platelet function (e.g., von Willebrand's disease)
Description : What is the organ where most of the clotting factors are produced? What is the role of vitamin K in the blood coagulation?
Last Answer : Most of the clotting factors are produced in the liver. Vitamin K participates in the activation of several clotting factors and it is fundamental for the well-functioning of the blood coagulation.
Description : How can the blood coagulation (clotting) process be described?
Last Answer : Blood clotting encompasses a sequence of chemical reactions whose respective products are enzymes that catalyze the following reactions (that is why the clotting reactions are called cascade reactions) ... blood clot and containing the hemorrhage. Blood Questions - Image Diversity: clotting cascade
Description : Christmas factor is involved in – (1) Blood Coagulation (2) Excretion (3) Digestion (4) Respiration
Last Answer : (1) Blood Coagulation Explanation: Factor IX, also known as Christmas factor, is one of the serine proteases of the coagulation system; it belongs to peptidase family Sl. Deficiency of this ... young boy named Stephen Christmas was found to be lacking this exact factor, leading to haemophilia.
Description : The vitamin necessary for coagulation of blood is – (1) Vitamin B (2) Vitamin C (3) Vitamin K (4) Vitamin E
Last Answer : (3) Vitamin K Explanation: Vitamin K is a group of structurally similar, fat-soluble vitamins that are needed for the posttranslational modification of certain proteins required for blood coagulation and ... amounts in green leafy vegetables) and vitamin K2 (form used by enzymes in animals).