Biology - Chapter 11.10: Integumentary System

Question 1

Layers of Epidermis

Answer 1

from superficial to deep:

1) Stratum corneum
2) Stratum lucidum* (palm and soles)
3) Stratum granulosum
4) Stratum spinosum
5) Stratum basale

Question 2

Dermis Layers

Answer 2

1) Papillary dermis (more superficial and thin, high surface area)
2) Reticular dermis (deeper and thick, made of dense irregular connective tissue)

Question 3

Sweat glands

Answer 3

1) Eccrine glands: located on the entire body surface and important in thermoregulation
2) Apocrine glands: secrete into hair follicles. Can produce earwax or milk

Question 4

Sebaceous glands

Answer 4

• located over the entire body except at the palms of hands and feet
• secrete sebum (oils + wax) into the hair follicle

Question 5

Hypodermis

Answer 5

• Deepest layer and contains large nerves and blood vessels
• Made of loose connective tissue and adipose tissue
• Fat and storage