1.The skin is formed of all of these structuresЕХСЕPТ:
* Dermis
* Epidermis
* Hypodermis
* Accessory glands
3
2. The name of the stratum spinosum is dueto:
* The spiny structure of its organelles
* Its cells contain multiple spiny crystals
* The desmosomes which attach adjacent cells and form intercellular bridges
* The multiple membrane bound spiny organoids in its cells
* All of the above
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3. All these statements concerning the stratum corneum are correct EXCEPT:
* It is the most apical layer of the epidermis
* It is formed of non-nucleated cells
* Its cells are very rich in eleidin granules
* It is easily desquamated
* Its cells contain no organelle
C
4. Melanocytes are important because they are:
* Phagocytic cells
* Antigen presenting cells
* Reticuloendothelial cells
* Keratin forming cells
* Melanin synthesizing cells
E
5. Langerhans cells are characterized by being:
* Rounded cells
* Multiple cells scattered in the granular layers
* Mechanoreceptors
* None of the above
6. Langerhans cells:
* Are present in the reticular layer of the dermis
* Contain melanin granules
* Are very important for pressure sensation
* Protect the skin from UV ray
* Play an immunologic role
7. The stratum lucidum:
* Characterizes thick skin
* Contains lamellar granules
* Is deeply basophilic
* Is present only in thin skin
* Formed of polyhedral cells
1
8. Thin skin:
* Contains only three epidermal layers
* Represents about 20% of the body surface
* Contains both sweat and sebaceous glands
* Has no keratinous appendages
* Is formed mainly of dense connective tissue
9. All the following statements are true ЕХСЕРТ:
* Hair follicles are surrounded by connective tissue sheath
* The rich vascular supply of the skin is essential for heat regulation
* The secretary portion of the eccrine sweat glands opens in the dermis
* Sebaceous glands are not found in thick skin
* Mitotic activity of the stratum basales is responsible of skin renewal
10. Skin color is dependent on:
* Number of melanocytes.
* Keratohyalin granules.
* Abundant eleidin granules.
* The thickness of the granular layer.
* None of the above.
11. In what type of skin are melanocytes larger and more active?
* Light skin
* Fair Skin
* Dark skin
12. The blood and nerve supply of hair follicle is found in the:
* Cuticle
* Cortex
* Papilla
* Bulb
13. What is the outermost layer of the skin?
* Sub-cutaneous
* Basal
B
14. The layer of the epidermis which produces melanin is called:
* Basal layer
* Spiny layer
* Prickle layer
* Horny layer
15. The fibrous portion of the dermis contains all EXCEPT:
* Collagen
* Elastic fibers
* Reticulum
* Mast cells
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16. Collagen makes the skin more
* Elastic
* Hard
* Oily
* Dry
17. The dermis is made up of two layers:
* Adipose tissue and basal layer
* Papillary layer and horny layer
* Papillary and reticular layers
* Inner layer and granular layer
18. Which layer of the epidermis contains dividing cells?
* Stratum basale
* Stratum granulosum
* Stratum lucidum
* Stratum corneum
19. Which layer of the epidermis contains cells with no nuclei or organelles?
* Stratum spinosum
20. Which cell is a phagocyte?
* Langerhans cell
* Keratinocyte
* Melanocyte
* Merkel cell
* Fibroblast
21. What is a characteristic of the cells in the epidermis of the skin?
* Microvilli
* Stereocilia
* Cilia
* Keratinization
* Both a and b
22. Which of the following is a receptor for fine touch which is located in the dermis?
* Free nerve endings
* Ruffini's corpuscles
* Pacinian corpuscles
* Krause's end bulbs
* Meissner's corpuscle
23. Which of the following is found in the hair follicle?
* Henle's layer
* Bipolar cells
* Amacrine cells
* Rods
* Ganglion cells
24. Which of the following is composed of connective tissue?
* Both b and c
25. Which of the following is composed of dense irregular connective tissue?
* Reticular layer of dermis
26. What statement is true regarding hair follicles?
* Males have more follicles than women
* Females have more follicles than men
* Males and females have the same number of follicles.
* Children have more follicles than adult
27. Where is thick skin found?
* Lips
* Over the knee
* Palms
* Breast
* All of the above,
28. Which layer of the epidermis is present only in thick skin?
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