Integumentary System

The integumental System Basic Structure of the Skin 1. Complete the following statements by writing the appropriate word or phrase on the cor moveingly numbered blank Epidermis The two basic tissues of which the throw together is composed ar dense irregular 1. _____________________________ connective tissue, which makes up the dermis, and 1 , which forms the epiKeratin dermis. The tough impermeable protein put together in the epidermal cells is called 2. ____________________________ 2 . The pigments melanin and 3 contribute to skin color. A localized Carotene concentration of melanin is referred to as a 4 . 3. _____________________________ Freckle 4. _____________________________ 2. Four protective functions of the skin argon a. b. Protection ____________________________________________ Temperature standard ____________________________________________ c. d. Prevents water supply loss _________________________________________ minor excretory dodge _____________________________ ____________ 3.Using the key choices, shoot all responses that apply to the following descriptions. Key a. b. c. course of study basale family corneum stratum granulosum d. e. f. bed Lucidum Stratum corneum & stratum lucidum papillary story dermis as a whole epidermis as a whole stratum basale stratum corneum stratum spinosum dermis as a whole stratum basale stratum basale papillary stratum stratum lucidum stratum spinosum papillary layer g. reticular layer h. epidermis as a whole i. dermis as a whole 1. semitransparent cells in thick skin containing keratin fibrils 2. dead cells 3. ermal layer responsible for fingerprints 4. vascular share 5. major skin domain of a function that produces derivatives (nails and hairs-breadth) 6. epidermal region exhibiting the most rapid cell division 7. scalelike dead cells, enough of keratin, that constantly slough off 8. mitotic cells filled with intermediate filaments 9. has abundant springlike and collagenic fibers 10. location o f melanocytes and Merkel cells 11. area where weblike pre-keratin 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. fuzz Shaft Stratum Corneum Stratum granulosum Stratum Spinosum Epidermis Layers Stratum Basale nerve endings hair follicle Sebaceous gland Melanocytes Arrector pili muscle Dermis Reticular layer confinement gland Blood vessel Subcutaneous tissue or Hair Root Hypodermis Vein Adipose cells Pacinian Corpuscle (deep pressure receptor) a. Lamellated granules extruded from the keratinocytes prevent water loss by diffusion through the epidermis. b. c. Glands that respond to rising androgen levels are the oleaginous & apocrine lands. d. Phagocytic cells that occupy the epidermis are called langerhans cells . e. A unique touch receptor formed from a stratum basale cell and a nerve fiber is a merkel disc f. What layer is present in thick skin but not in thin skin? stratum lucidum g. 46 Fibers in the dermis are produced by fibroblasts What cell-to-cell structures hold the cells of the stratum spinosum tightly together? demosomes Review flat solid 7 . . 5. What substance is manufactured in the skin that plays a social function in calcium absorption elsewhere in the eubstance? Vitamin D 6.List the sensory receptors found in the dermis of the skin. free nerve endings, messiners corpuscles, pacinian corpuscles 7. A nurse tells a doctor that a patient is cyanotic. Define cyanosis. What does its heading imply? tissues near the skin surface are low on oxygen 8. What is a bedsore (decubitus ulcer)? Why does it occur? blue or purple color to the skin or mucous membranes localized area of tissue necrosis increased pressure over bony areas snip blood supply to the area Accessory Organs of the Skin 9. moderate the key choices with the appropriate descriptions. Key a. . c. arrector pili cutaneous receptors hair seb aceous glands arrector pili drive gland-apocrine hair follicle sweat gland-apocrine sebaceous glands hair & nail cutaneous receptors sebaceous glands nail d. e. f. hair follicle nail sebaceous glands g. h. sweat glandapocrine sweat glandeccrine 1. produces an accumulation of oily material that is cognize as a blackhead 2. tiny muscles, attached to hair follicles, that tug the hair upright during fright or cold 3. perspiration glands with a role in temperature control 4. sheath formed of both epithelial and connective tissues . less numerous type of perspiration-producing gland found chiefly in the pubic and axillary regions 6. found everywhere on the consistence except the palms of hands and soles of feet 7. primarily dead/keratinized cells 8. specialized nerve endings that respond to temperature, touch, etc. 9. secretes a lubricant for hair and skin 10. sports a lunule and a cuticle Review Sheet 7 47 10. pull in two integumentary system mechanisms that help in regulating bod y temperature. sweat glands- perspiration helps to reduce heat from the skins surface.Arterioles dilate the skin, then the capillary tubing network of the dermis becomes engorged with the heated blood, then heat is allowed to glitter from the skin surface. 11. Several structures or skin regions are listed below. Identify each(prenominal) by matching its letter with the appropriate area on the figure. C a. adipose cells b. dermis c. epidermis d. hair follicle e. hair shaft f. molt stratum corneum cells F E B D A Plotting the Distribution of Sweat Glands 12. With what substance in the bond paper does the ace painted on the skin react? starch 13.Based on come apart data, which skin areathe forearm or palm of handhas more(prenominal) sweat glands? Palm Was this an expected result? ______ Explain. Which other body areas would, if tested, try out to have a high density of sweat glands? 14. What organ system controls the activity of the eccrine sweat glands? soles of the fee, foreh ead nervous system Dermography reproduce 15. Why can fingerprints be used to identify individuals? epidermal ridges found on your fingers are unique and unchanging throughout your lifetime. 16. Name the ternary common fingerprint patterns. Arches 48 Review Sheet 7 , Loops , and Whorls integumentary System