Skin Exam Questions PDF

SKIN ‫بدون تصنيف‬١٦:٥٣ ‫ الساعة‬،‫اليوم‬ SKIN 1. What is a function of the skin? - A) Provide protection - B) Store fat - C) Produce energy - D) Enhance circulation Correct answer: A 2. Which of the following cells are found in the epidermis and produce keratin? - A) Melanoc...

SKIN ‫بدون تصنيف‬١٦:٥٣ ‫ الساعة‬،‫اليوم‬ SKIN 1. What is a function of the skin? - A) Provide protection - B) Store fat - C) Produce energy - D) Enhance circulation Correct answer: A 2. Which of the following cells are found in the epidermis and produce keratin? - A) Melanocytes - B) Merkel cells - C) Keratinocytes - D) Langerhans cells Correct answer: C 3. What is the deepest layer of the epidermis? - A) Stratum basale - B) Stratum spinosum - C) Stratum granulosum - D) Stratum corneum Correct answer: A 4. Which type of tissue is found in the dermis? - A) Epithelial tissue - B) Connective tissue - C) Muscle tissue - D) Nervous tissue Correct answer: B 5. Which of the following layers is found only in the palms of the hands and soles of the feet? - A) Stratum basale - B) Stratum spinosum - C) Stratum granulosum - D) Stratum lucidum Correct answer: D 6. What is the role of Langerhans cells in the epidermis? - A) Produce melanin - B) Provide sensory protection - C) Act as macrophage-like dendritic cells - D) Produce keratin Correct answer: C 7. What is the main function of the dermis? - A) Produce keratin - B) Regulate body temperature - C) Prevent water loss - D) Synthesize vitamin D Correct answer: B 8. Which of the following cell types are found in the dermis? - A) Keratinocytes - B) Melanocytes - C) Fibroblasts - D) Merkel cells Correct answer: C 9. Which of the following fibers are found in the dermis and play a role in elasticity? - A) Collagen fibers - B) Elastic fibers  - C) Reticular fibers - D) All of the above Correct answer: D 10. Which layer contains Merkel cells associated with sensory nerve endings? - A) Stratum basale - B) Stratum spinosum - C) Stratum granulosum - D) Stratum corneum Correct answer: A 11. Which layer of the skin is known as the "horny layer"? - A) Stratum basale - B) Stratum spinosum - C) Stratum granulosum - D) Stratum corneum Correct answer: D 12. Which cell type in the epidermis is responsible for producing the pigment melanin? - A) Keratinocytes - B) Melanocytes - C) Merkel cells - D) Langerhans cells Correct answer: B 13. What type of tissue makes up the majority of the hypodermis? - A) Epithelial tissue - B) Connective tissue - C) Muscle tissue - D) Adipose tissue Correct answer: D 14. Which of the following is NOT a function of the skin? - A) Synthesizes vitamin D - B) Regulates body heat - C) Produces red blood cells - D) Provides sensory reception Correct answer: C 15. The layer of the dermis that contains dermal papillae is called: - A) Reticular layer - B) Papillary layer - C) Subcutaneous layer - D) Granular layer Correct answer: B 16. Which protein found in the dermis is primarily responsible for its tensile strength? - A) Keratin - B) Melanin - C) Collagen - D) Elastin Correct answer: C 17. What is the primary function of the reticular layer of the dermis? - A) House the dermal papillae - B) Provide structural support and elasticity - C) Facilitate rapid cell division - D) Form a barrier against pathogens Correct answer: B 18. Which type of sensory receptor in the skin is responsible for detecting deep pressure and vibration? - A) Meissner's corpuscles - B) Pacinian corpuscles - C) Merkel cells - D) Free nerve endings Correct answer: B 19. Which layer of the epidermis is characterized by the presence of lamellar granules that release lipids? - A) Stratum basale - B) Stratum spinosum - C) Stratum granulosum - D) Stratum corneum Correct answer: C 20. Which condition is caused by a genetic mutation leading to the absence of melanin production? - A) Vitiligo - B) Melanoma - C) Albinism - D) Psoriasis Correct answer: C 21. The primary role of the hypodermis (subcutaneous layer) is: - A) Protect against UV radiation - B) Store energy and insulate the body - C) Facilitate sensory perception - D) Produce sweat and oil Correct answer: B 22. Which of the following cells are NOT typically found in the dermis? - A) Fibroblasts - B) Macrophages - C) Adipocytes - D) Keratinocytes Correct answer: D 23. The process by which keratinocytes move from the stratum basale to the stratum corneum and become filled with keratin is called: - A) Mitosis - B) Melanization - C) Keratinization - D) Phagocytosis Correct answer: C 24. Which layer of the epidermis is only present in thick skin, such as the palms and soles? - A) Stratum basale - B) Stratum spinosum - C) Stratum granulosum - D) Stratum lucidum Correct answer: D 25. What is the primary cause of wrinkles and sagging skin in the aging process? - A) Increased melanin production - B) Decrease in collagen and elastin fibers - C) Overactivity of sebaceous glands - D) Thickening of the epidermis Correct answer: B