Chapter 5: Integumentary System Martin Caon Examination Questions and Answers in Basic Anatomy and Physiology Third Edition

Martin Caon Examination Questions and Answers in Basic Anatomy and Physiology Third Edition Chapter 5: Integumentary System 5.1 Layers of the skin 1. What is the name given to the most superficial layer of the integument? a. Stratum corneum b. Papillary dermal layer c. Stratum lucidum d. Superficial fascia Answer is A: The stratum corneum is the horny (i.e. keratinised), dead covering to the epidermis. Choice D is another name for the hypodermis. 2. Which layer of the integument contains rapidly dividing keratinocytes? a. Stratum lucidum b. Papillary dermal layer c. Stratum germinativum d. Reticular dermal layer Answer is C: Stratum germinativum (=stratum basale) implies that germination is happening. In fact new cells are formed here by mitosis to replace those lost from the stratum corneum. 3. Which layer of the integument is the most superficial layer? a. Hypodermis b. Stratum granulosum c. Stratum corneum d. Reticular dermal layer Answer is C: Stratum corneum is the outermost dead layer of the epidermis. 4. Which is the most superficial layer of the integument that also has capillaries, lymphatics and sensory neurons? a. Reticular dermal layer b. Papillary dermal layer c. Stratum granulosum d. Stratum lucidum Answer is B: The papillary layer is superficial to the reticular layer. Both are part of the dermis which is where the most superficial capillaries are. 5. Which of the following lists layers of the integument in the order from most superficial first, to deep? a. Epidermis, hypodermis, dermis b. Epidermis, papillary dermal layer, reticular dermal layer c. Dermis, stratum germinativum, stratum corneum d. Stratum corneum, stratum germinativum, epidermis Answer is B: The integument consists of the epidermis and dermis. The dermis consists of the papillary dermal layer and the reticular dermal layer, which is deeper. 6. Which skin layer is the most superficial? a. Stratum lucidum b. Stratum corneum c. Papillary dermal layer d. Reticular dermal layer Answer is B: Stratum corneum is the outermost corny or horny layer made largely of keratin. 7. The integument consists of which of the following layers? a. Epidermis and dermis b. Epidermis, dermis and hypodermis c. Stratum germinativum, stratum spinosum, stratum granulosum, stratum lucidum and stratum corneum d. Stratum corneum, dermis and reticular dermal layer Answer is A: Hypodermis is not part of the integument. Choice C excludes the dermis. 8. Which layer of the skin is the most superficial? a. Epidermis b. Dermis c. Papillary dermal layer d. Stratum germinativum Answer is A: Epidermis refers to the outermost layer of the skin. While stratum germinativum is part of the epidermis, it is the deepest part. 9. The “stratum corneum” is part of the skin that: a. Contains the youngest, rapidly dividing cells b. Anchors the skin to muscle while allowing it to slide over muscle c. Contains collagen, elastin and reticular fibres d. Protects the body against heat, chemicals and bacteria