Review Sheet 7- The Integumentary System

Review Sheet 7- The Integumentary System - NAME LAB...

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Unformatted text preview: NAME LAB TIME/DATE The Integumentary System Basic Structure of the Skin 1. Complete the following statements by writing the appropriate word or phrase on the correspondingly numbered blank: 'l'he two basic tissues of which the skin is composed are dense irregular l. connective tissue, which makes Lrp the dermis, and L. which forms the epi— dermis. Thc tough water—repellent protein found in the epidermal cells is called 2_ A. The pigmertts melanin and i contribute to skin color. A localized concentration of melanin is referred to as a i. 1 4. 2. Four protective functions of the skin are EL (3 . b. d. 3. Using the key choices. choose all responses that apva to the following descriptions. Kr-’_‘r'.' a. strattrm basale d. stratum ltrcidtrm g. reticular layer b. strattrm corneum e. stratum spinosum h. epidermis as a whole c. stratum granulosum f. papillary layer i. dermis as a whole 1. tr'ar'rsluccnt cells in thick skin containing keratin fibrils 2. dead cells 3. dermal layer responsible for firtgcrprirtts 4. vascular region 5. major skin area that produces derivatives (trails and hair) 6. epidermal region exhibiting the most rapid cell division 7". scalelike dead cells, full of keralirt, that constantly slough off 8. mitotic cells filled with intermediate filaments 9. has abundant elastic artd collagenic fibers If). location of n'relanocvtes and Mcrkel cells 1 1. area where weblike pre—kcratin filaments first appear 12. region of areolar‘ connective tissue 45 4. Label the skin structures and areas indicated in the accompanying diagram of thin skin. Then, complete the statements that follow. Layers 1' :I' E Subcutaneous E tissue or ‘ Adipose cells a. — granules extruded from the keratinocytes prevent water loss by diffusion through the epidermis. b. Fibers in the dermis are produced by c. Glands that respond to rising androgen levels are the — glands. d. Phagocytic cells that occupy the epidermis are called e. A unique touch receptor formed from a stratum basale cell and a nerve fiber is a f. What layer is present in thick skin but not in thin skin? g. What cell—to—cell structures hold the cells ofthe stratum spinosum tightly together? 46 Review Sheet 7 5. What substance is manufactured in the skin that plays a role in calcium absorption elsewhere in the body? 6. List the sensory receptors found in the dermis of the Skin. 7. A nurse tells a doctor that a patient is cyanotic. Define cyanosis. What does its presence imply? 8. What is a bedsore (decubitus ulcer) ? Why does it occur? Accessory Organs of the Skin 9. Match the key choices with the appropriate descriptions. Key: a. arrector pili d. hair follicle g. sweat gland—apocrine b. cutaneous receptors e. nail h. sweat gland—eccrine c. hair f. sebaceous glands 1. produces an accumulation of oily material that is known as a blackhead 2. tiny muscles, attached to hair follicles. that pull the hair uptight during fright or cold DJ . perspiration glands with a role in temperature control 4. sheath fonned of both epithelial and connective tissues 5. less numerous type of perspiration—producing gland; found mainly in the pubic and axillary regions 6. found everywhere on the body except the palms of hands and soles of feet 7. primarily deadfkeratinized cells 8. specialized nerve endings that respond to temperature, touch, etc. 9. secretes a lubricant for hair and skin 10. “sports” a lunula and a cuticle Review Sheet 7 47 10. Describe two integumentary system mechanisms that help in regulating body temperature. 11. Several structures or skin regions are listed below. Identify each by matching its letter with the appropriate area on the figure. a. adipose cells b. dermis c. epidermis d. hair follicle e. hair shaft. f. sloughing stratum corneum cells Plotting the Distribution of Sweat Glands 12. With what substance in the bond paper does the iodine painted on the skin react? 13. Based on class data, which skin area—the forearm or palm of hand—has more sweat. glands? Was this an expected result? Explain. Which other body areas would, if tested, prove to have a high density of sweat glands? Face’ will“ 14. What organ system controls the activity of the eccrine sweat glands? Dermography: Fingerprinting 15. Why can fingerprints be used to identify individuals? 16. Name the three common fingerprint patterns. 48 Review Sheet 7 ...
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This note was uploaded on 07/20/2011 for the course BIO 201 taught by Professor Quintana during the Spring '10 term at TAMU Intl..

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Review Sheet 7- The Integumentary System - NAME LAB...

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