EXERCISE 3
The Skin (Integumentary System)
Basic Structure of the Skin
1. Complete the following statements by writing the appropriate word or phrase on the
corresponding numbered blank:
The two basic tissues of which the skin is composed are dense connective tissue, which
makes up the dermis, and 1 , which forms the epidermis. Most cells of the epidermis are 2
. The protein 3 makes the dermis tough and leatherlike. The specialized cells that produce
the pigments that contribute to skin color are called 4 .
1. Keratinized stratified squamous epithelium
2. Dead
3. Collagen
4. Melanocytes
2. Four protective functions of the skin are:
- Protects from mechanical damage, chemical damage, thermal damage, ultraviolet
radiation, microbes, and desiccation.
- Prevents loss of moisture
- Regulates body temperature
- Synthesizs Vitamin D
3. Using the key choices, choose all responses that apply to the following descriptions.
Key: stratum basale stratum lucidum reticular layer
stratum corneum stratum spinosum epidermis (as a whole)
stratum granulosum papillary layer dermis (as a whole)
stratum granulosum 1.layer containing sacs filled with fatty material or keratin subunits
stratum corneum 2. consists entirely of dead cells
papillary layer 3. the more superficial dermis layer
epidermis 4. avascular region
dermis 5. major skin area where derivatives (nails and hair) reside
stratum basale 6. epidermal region exhibiting the most mitoses
stratum corneum 7. most superficial epidermal layer
dermis 8. has abundant elastic and collagenic fibers
stratum basale 9. region where melanocytes are most likely to be found
Copyright © 2014 Pearson Education, Inc.
The Skin (Integumentary System)
Basic Structure of the Skin
1. Complete the following statements by writing the appropriate word or phrase on the
corresponding numbered blank:
The two basic tissues of which the skin is composed are dense connective tissue, which
makes up the dermis, and 1 , which forms the epidermis. Most cells of the epidermis are 2
. The protein 3 makes the dermis tough and leatherlike. The specialized cells that produce
the pigments that contribute to skin color are called 4 .
1. Keratinized stratified squamous epithelium
2. Dead
3. Collagen
4. Melanocytes
2. Four protective functions of the skin are:
- Protects from mechanical damage, chemical damage, thermal damage, ultraviolet
radiation, microbes, and desiccation.
- Prevents loss of moisture
- Regulates body temperature
- Synthesizs Vitamin D
3. Using the key choices, choose all responses that apply to the following descriptions.
Key: stratum basale stratum lucidum reticular layer
stratum corneum stratum spinosum epidermis (as a whole)
stratum granulosum papillary layer dermis (as a whole)
stratum granulosum 1.layer containing sacs filled with fatty material or keratin subunits
stratum corneum 2. consists entirely of dead cells
papillary layer 3. the more superficial dermis layer
epidermis 4. avascular region
dermis 5. major skin area where derivatives (nails and hair) reside
stratum basale 6. epidermal region exhibiting the most mitoses
stratum corneum 7. most superficial epidermal layer
dermis 8. has abundant elastic and collagenic fibers
stratum basale 9. region where melanocytes are most likely to be found
Copyright © 2014 Pearson Education, Inc.
