Lec 5: Integumentary System

Question 1

Consist of skin, and accessory structures such as:

Answer 1

Hair, glands, and nails

Question 2

Major functions of integumentary system:

Answer 2

Protection
Sensation
Vitamin D production
Temperature regulation
Excretion

Question 3

Two major tissue layer:

Answer 3

Epidermis
Dermis

Question 4

Most superficial layer, stratified squamous epithelium, in deepest layer the mitosis occurs

Answer 4

Epidermis

Question 5

Five strata:
(deepest to superficial)

Answer 5

Stratum Basale (Germativum)
Stratum spinosum
Stratum granulosum
Stratum lucidum
Stratum corneum

Question 6

Consist of cuboidal or columnar cells that undergo mitosis about every 19 days

Answer 6

Stratum Basale

Question 7

Spiny in appearance, flattened appearance and accumulate lipid filled vesicles called lamellar bodies

Answer 7

Stratum Spinosum

Question 8

Grainy in appearance, Flat and diamond in shaped, cells accumulate more keratin and release lamellar bodies

Answer 8

Stratum granulosum

Question 9

smooth, translucent layer, clear zone between granulosum and corneum, this thin layer of cells is only present in certain areas of body thick skin of palms, soles and digit

Answer 9

Stratum lucidum

Question 10

Most superficial stratum of epidermis, consist of 25 or more layers of dead squamous cells filled with keratin, coated and surrounded by lipids

Answer 10

Stratum corneum