Instructions: For each histology question, pick the one best answer. This histology test bank is also useful for the histology questions on the USMLE (USMLE step 1). Click here for answers and detailed explanations. 1. Which of the four basic tissue types does blood belong to? a. Epithelium b. Connective tissue c. Muscle d. Nervous tissue e. Blood 2. Which of the following formed elements do not contain a nucleus? a. Platelets b. Erythrocytes c. Leukocytes d. Monocytes e. Both a and b
4. Which leukocyte is the most abundant in a peripheral smear of blood? a. Lymphocytes b. Basophils c. Neutrophil d. Monocytes e. Eosinophils 5. Which of the following is not a granulocyte? a. Lymphocytes b. Neutrophil c. PMN d. Eosinophils e. Basophils 6. Which of the following is a granulocyte? a. Thrombocyte b. Lymphocyte c. Eosinophil d. Monocyte e. Erythrocyte
8. Which leukocyte has a multi-lobed (3-5 lobes) nucleus? a. Neutrophil b. Lymphocytes c. Monocytes d. Eosinophil e. Basophils 9. Which cell has large blue granules, often obscuring the nucleus? a. Neutrophil b. Lymphocytes c. Monocytes d. Eosinophil e. Basophils
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1- What is the reason of sickle cell anemia? A. substitution of Val with Glu in beta-chain of hemoglobin B. substitution of Lent with ILe in beta-chain of hemoglobin C. substitution of Glu with Val in beta-chain of hemoglobin D. substitution of Phe with Gln in beta-chain of hemoglobin 2- what is not correct answer for hemoglobin and myoglobin ? A. myoglobin has low affinity to oxygen than hemoglobin B. myoglobin has one site to bind oxygen C. Low pH decrece the affinity of hemoglobin to oxygen D. myoglobin has one polipeptide chain 3- alanin is similar to serine in the same way that ? A. Val is similar to thr B. ...