Histo exam Sept 2009 - 1 Histology Exam September 16, 2009...

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1 Histology Exam – September 16, 2009 (Cytology, epithelium, CT, blood cells, skin) I. True or False (ten points) (If you F’s and T’s are unclear, write out “true” or “false”). a. Eosinophils are more common than monocytes in normal blood F___ b. Many epithelial cells have specialized structures on the apical surface __T_ c. Proteins destined for lysosomes are made in the RER __T__ d. Melanocytes are more numerous in darker skinned people _F__ e. The nucleus of platelets is basophilic _F__ f. Type IV collagen in the most prominent collagen in cartilage ___F g. Most epithelia are attached to a basal lamina (basement membrane) __T__ h. Monocytes give rise to platelets __F__ i. Eccrine (merocrine) sweat glands are involved in thermoregulation __ T__
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2 j. Vit D is required for the synthesis of collagen _F (Vit C is)__ II. Multiple choices. Circle the best answer. Be careful with “Except” questions. e1. All of the following are characteristics of epithelium EXCEPT: A. Tissue volume is composed mostly of cells B. Epithelial cells exhibit polarity C. Most epithelial rest on a basement membrane XD. Epithelial tissue is vascularized and well innervated E. Epithelial tissues have a free surfac 2. A defect in which of the following structures will result in an epithelium that is no longer adherent to the basement membrane? A. Reticular lamina B. Desmosomes C. Tight junctions D. Gap junctions XE. Hemidesmosomes
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3 3. Which of the following is true of mitochondria? A. Their inner and outer membranes have the same surface area. XB. They bind to microtubules and are moved around the cytoplasm. C. They all have uniform shape and size. D. All their proteins are made within the mitochondrion. E. Some mitochondria lack DNA. 4. Which of the following is correct? A. Histamine released by macrophages attracts white cells to site of infection. B. Connective tissue cells are the dominant component of dense connective tissue. C. The proteoglycans in the ground substance consist mostly of proteins. xD. Fibroblasts (-cytes) synthesize and maintain the fibers and ground substance of CT. E. Type IV collagen is the dominant collagen in loose CT.
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4 5. The physical properties of hyaline cartilage (stiff, jello- like) are mostly due to: A. Elastic fibers B. Collagen fibers XC. Hyaluronic acid and proteoglycans D. Wandering macrophages. E. Intermediate filaments 6. In normal blood, what percentage of leukocytes are monocytes? A. 60-70% D. less than 1% XB. 3-5% C. 30% 7. Cells in the outermost (apical) layer of an epithelium: A. may be squamous, cuboidal, or columnar B. are polarized C. may contain apical surface specifications D. interact through several types of junctions XE. all of the above
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5 8. A cell specialized for making proteins will have a large number of: A. Mitochondria B. Microtubules C. Lysosomes
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This note was uploaded on 11/08/2011 for the course SCIENCE 3254 taught by Professor Dr.shoupe during the Spring '11 term at Fort Valley State University .

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Histo exam Sept 2009 - 1 Histology Exam September 16, 2009...

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