The Integumentary System Basic Structure of the Skin
NAME_________________________________ LAB TIME/DATE _______________________
R E V I E W
S H E E T
EXERCISE
7
Print Form
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: Stratified squamous epithelium The two basic tissues of which the skin is composed are dense irregular 1. _____________________________ connective tissue, which makes up the dermis, and 1 , which forms the epiKeratinocytes dermis. The tough water-repellent protein found in the epidermal cells is called 2. _____________________________ 2 . The pigments melanin and 3 contribute to skin color. A localized keratin concentration of melanin is referred to as a 4 . 3. _____________________________ 4. 2. Four protective functions of the skin are a. b. prevents desiccation ____________________________________________ protects against thermal damage ____________________________________________ c. d. prevents bacterial invasion _________________________________________ protects against UV readiation _________________________________________ melanocytes _____________________________
3. Using the key choices, choose all responses that apply to the following descriptions. Key: a. b. c. stratum basale stratum corneum stratum granulosum d. e. f. stratum lucidum stratum spinosum papillary layer g. reticular layer h. epidermis as a whole i. dermis as a whole
stratum lucidum stratumcorneum & lucidum papilliary layer dermis as a whole epidermis as a whole stratum basale stratum corneum stratum spinosum dermis as a whole stratum basale stratum spinosum papillary layer
1. translucent cells in thick skin containing keratin fibrils 2. dead cells 3. dermal layer responsible for fingerprints 4. vascular region 5. major skin area that produces derivatives (nails and hair) 6. epidermal region exhibiting the most rapid cell division 7. scalelike dead cells, full of keratin, that
R E V I E W
S H E E T
EXERCISE
7
Print Form
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: Stratified squamous epithelium The two basic tissues of which the skin is composed are dense irregular 1. _____________________________ connective tissue, which makes up the dermis, and 1 , which forms the epiKeratinocytes dermis. The tough water-repellent protein found in the epidermal cells is called 2. _____________________________ 2 . The pigments melanin and 3 contribute to skin color. A localized keratin concentration of melanin is referred to as a 4 . 3. _____________________________ 4. 2. Four protective functions of the skin are a. b. prevents desiccation ____________________________________________ protects against thermal damage ____________________________________________ c. d. prevents bacterial invasion _________________________________________ protects against UV readiation _________________________________________ melanocytes _____________________________
3. Using the key choices, choose all responses that apply to the following descriptions. Key: a. b. c. stratum basale stratum corneum stratum granulosum d. e. f. stratum lucidum stratum spinosum papillary layer g. reticular layer h. epidermis as a whole i. dermis as a whole
stratum lucidum stratumcorneum & lucidum papilliary layer dermis as a whole epidermis as a whole stratum basale stratum corneum stratum spinosum dermis as a whole stratum basale stratum spinosum papillary layer
1. translucent cells in thick skin containing keratin fibrils 2. dead cells 3. dermal layer responsible for fingerprints 4. vascular region 5. major skin area that produces derivatives (nails and hair) 6. epidermal region exhibiting the most rapid cell division 7. scalelike dead cells, full of keratin, that