5. Integumentary System

The fibrous protein that is responsible for the strength and water resistance of the skin surface is

(a) Collagen

(b) Eleidin

(c) Keratin

(d) Elastin

(e) Keratohyalin

Match the appropriate structure with the proper description and/or function.

1. Made of dense, irregular connective tissue

 2. Produce sebum

3. Helps regulate body temperature by producing sweat

4. Cause fingerprints

5. Houses the hair root

6. Superficial keratinized stratified squamous epithelium

7. Deep pressure receptors

8. Vascular layer that houses skin appendages

a. Dermal papillae

b. Lamellar corpuscles

c. Dermis

d. Hair follicle

e. Epidermis

f. Eccrine sweat gland

g. Reticular layer

h. Sebaceous glands

List the four phases in the regeneration of the skin after an injury.

The cutaneous plexus and subpapillary plexus consist of

a. Blood vessels providing the dermal blood supply.

b. A network of nerves providing dermal sensations.

c. Specialized cells for cutaneous sensations.

d. Gland cells that release cutaneous secretions.

Match the appropriate structure with the proper description and/or function.

1. Made of dense, irregular connective tissue

 2. Produce sebum

3. Helps regulate body temperature by producing sweat

4. Cause fingerprints

5. Houses the hair root

6. Superficial keratinized stratified squamous epithelium

7. Deep pressure receptors

8. Vascular layer that houses skin appendages

a. Dermal papillae

b. Lamellar corpuscles

c. Dermis

d. Hair follicle

e. Epidermis

f. Eccrine sweat gland

g. Reticular layer

h. Sebaceous glands

Which of the following is not a skin structure?

a. Nerve fiber

b. Hair papilla

c. Hair

d. Nail

Identify the different portions (a–d) of the cutaneous membrane and the underlying layer of loose connective tissue (e) in the diagram to the right.

d. ____

Match the appropriate structure with the proper description and/or function.

4. Cause Fingerprints

a. Dermal papillae

b. Lamellar corpuscles

c. Dermis

d. Hair follicle

e. Epidermis

f. Eccrine sweat gland

g. Reticular layer

h. Sebaceous glands

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Melanocytes account for the bulk of the epidermis.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Tactile cells produce the pigment melanin.

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

The primary skin pigment is melanin, which is derived from the amino acid tyrosine.

Which epidermal cell can roam in and out of the epidermis?

Why does skin wrinkle and what accelerates the wrinkling process?