Which of the following cells or blood elements play a role in the initial phases of wound healing? a. Polymorphonuclear leukocytes (PMNs) b. Platelets c. Monocytes d. Lymphocytes

Which of the following cells or blood elements play a role in the initial phases of wound healing? a. Polymorphonuclear leukocytes (PMNs) b. Platelets c. Monocytes d. Lymphocytes
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Answer: a, b, c, d  Shortly after the initial injury, the wound is full of debris which is cleared over the next several days by recruited and activated phagocytic cells. PMNs begin to arrive immediately, reaching large numbers within 24 hours. The PMNs are followed by macrophages which appear in wounds in significant numbers within two to three days. Macrophages are mononuclear phagocytic cells derived from circulating monocytes or resident tissue macrophages. They complete the process of removing all material not necessary for the ensuing steps of wound healing. Lymphocytes also appear in wounds in small numbers during the inflammatory response. The role of lymphocytes in the wound healing process remains to be clarified, but they are thought to be more related to the chronic inflammatory processes than the initial response to wounding. Platelets are anuclear discoid blood elements derived from bone marrow megakarocytes which play a role in the initial hemostatic process as well as releasing chemotactic factors and factors leading to fibroblast proliferation
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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 count of 50,000/µL or more usually ensures hemostasis b. Bleeding time assays assessibility of platelets to perform hemostatic plugs and is determined from a sample of blood drawn in an EDTA coated test tube c. Aspirin therapy can be associated with a bleeding time in the range of 8–15 minutes d. Tests of platelet aggregation should be part of the standard preoperative evaluation of patients using aspirin

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

Polymorphonuclear leukocytes (neutrophils) are by definition part of C A. granuloma B. Granulation tissue C. None of these D. All of them

Description : Polymorphonuclear leukocytes (neutrophils) are by definition part of C A. granuloma B. Granulation tissue C. None of these D. All of them

Last Answer : None of these

The largest cells in mammalian blood are – (1) Erythrocytes (2) Monocytes (3) Basophils (4) Lymphocytes

Description : The largest cells in mammalian blood are – (1) Erythrocytes (2) Monocytes (3) Basophils (4) Lymphocytes

Last Answer : (2) Monocytes Explanation: Various components of blood are: Plasma, Erythrocytes (Red Blood Cells), Leueocytes (White Blood Cells) and Thrombocyles/Platelets. Monocytes, also known as ... and cytoplasm is abundant. -For any Study materialContact WhatsApp: 8337932441 Join Telegram- Click here

Which are the largest of the white blood cells? A. lymphocytes B. eosinophils C. basophils D. monocytes (Answer)

Description : Which are the largest of the white blood cells? A. lymphocytes B. eosinophils C. basophils D. monocytes (Answer)

Last Answer : D. monocytes (Answer)

The most active phagocytic white blood cells are (a) eosinophils and lymphocytes (b) neutrophils and monocytes (c) neutrophils and eosinophils (d) lymphocytes and macrophages.

Description : The most active phagocytic white blood cells are (a) eosinophils and lymphocytes (b) neutrophils and monocytes (c) neutrophils and eosinophils (d) lymphocytes and macrophages.

Last Answer : (b) neutrophils and monocytes

The largest cells in mammalian blood are (1) Erythrocytes (2) Monocytes (3) Basophils (4) Lymphocytes

Description : The largest cells in mammalian blood are (1) Erythrocytes (2) Monocytes (3) Basophils (4) Lymphocytes

Last Answer : Monocytes

Polymorphonuclear neutrophil granulocytes A A. are important cells in bacterial infections B. play a role in inflammation by releasing histamine C. are important cells in neoplastic conditions D. play an important role in viral infections

Description : Polymorphonuclear neutrophil granulocytes A A. are important cells in bacterial infections B. play a role in inflammation by releasing histamine C. are important cells in neoplastic conditions D. play an important role in viral infections

Last Answer : are important cells in bacterial infections

Which of the following statement(s) is/are true concerning heparin-associated thrombocytopenia? a. Heparin-associated thrombocytopenia occurs only in the face of over anticoagulation with heparin b. Severe thrombocytopenia (platelet count less than 100,000) is seen in less than 10% of patients treated with heparin c. Heparin-associated thrombocytopenia is due to the aggregation of platelets and may result in thrombosis or embolic episodes d. Heparin-associated thrombocytopenia may be seen within hours of initiation of heparin therapy

Description : Which of the following statement(s) is/are true concerning heparin-associated thrombocytopenia? a. Heparin-associated thrombocytopenia occurs only in the face of over anticoagulation with heparin b. ... d. Heparin-associated thrombocytopenia may be seen within hours of initiation of heparin therapy

Last Answer : Answer: b, c Heparin-associated thrombocytopenia occurs in 0.6% to 30% of patients who receive heparin, although severe thrombocytopenia (platelet counts less than 100,000) is seen in ... as coating on pulmonary artery catheters or low rate infusion into arterial catheters may cause this syndrome