Unit 11 Integumentary System

Question 1

What are the layers of skin?

Answer 1

Epidermis, Dermis, Hypodermis

Question 2

What are the 4 layers of cells in skin?

Answer 2

Stratum Basale (deepest)
Stratum spinosum
Stratum granulosum
Startum corneum (most superficial)

Question 3

Thick skin only found in the palms of hands and soles of feet is called?

Answer 3

Stratum Lucidum

Question 4

What is the dominant cell in all layers except the stratum basale? what protein does this create and store?

Answer 4

Keratinocytes

Keratin

Question 5

What is Keratin for?

Answer 5

Gives Hair, nails, skin their hardess and water-resistant properties

Question 6

What are merkel cells? melanocytes?

Answer 6

• receptors for touch

- produces the pigment melanin

Question 7

What layers make up the dermis?

Answer 7

Papillary Layer

Reticular layer (deeper)

Question 8

Hair Functions?

Answer 8

Protections, sensory input, thermoregulation, and communication