Chapter 5: Integumentary System

Question 1

List the functions of the integumentary system.

Answer 1

Functions:
Protection
Prevention of water loss
Temp Regulation
Metabolic Regulation
Immune Defense
Sensory Reception
Excretion/Secretion

Question 2

List the layers of the integumentary system

Answer 2

Epidermis
Dermis
Hypodermis

Question 3

What structures are considered part of the integumentary system?

Answer 3

Skin
Hair
Nails
Sweat Glands
Sebaceous Glands

Question 4

Thick Skin vs Thin Skin

Answer 4

Thick skin - no hair, sweat glands only, all 5 epidermal strata, ranges from 400 to 600 micrometers
i.e. palms and soles of feet

Thin Skin - lacks stratum lucidum, covers most of the body, contains hair, sebaceous and sweat glands

Question 5

Name 3 factors that influence skin color.

Answer 5

Hemoglobin
Melanin - pigment
Carotene - comes from diet

Question 6

Name 3 types of skin markings.

Answer 6

Nevus - moles
Freckles
Hemangioma - red birth marks; pooling of red blood vessels

Question 7

What are lines of cleavage in the skin?

Answer 7

Tension lines caused by the predominant orientation of collagen fiber bundles.

Cut the skin perpendicular to these times and it creates scaring that recoils (TKA scars) but cut with these lines and the skin heals quicker with less scar appearance.

Question 8

Nails come from what skin layer?

Answer 8

Stratum corneum

Question 9

Functions of Hair

Answer 9

Protection
Heat retention
Facial expression
Sensory reception
Visual identification
Chemical signal dispersal

Question 10

What happens in the “Aging Integument”

Answer 10

skin repair takes longer
skin becomes less resilient
skin immune response is diminished
skin becomes drier
skin and hair pigmentation becomes altered
sweat production decreases
blood supply reduces = impaired thermoregulation
hair thinning and loss
vit D production decreases
develop skin cancers (most common type of cancer)

Question 11

Other integumentary glands (2)

Answer 11

Ceruminous glands - ear wax

Mammary glands

Question 12

List the 5 layers of the epidermis in order from superficial to deep.

List the 2 layers of the dermis in order from superficial to deep.

Answer 12

Stratum: CLGSB “California Ladies Get SunBurned”

Epidermis
Stratum corneum
Stratum lucidum
Stratum granulosum
Stratum spinosum
Stratum basale

Dermis
Papillary layer
Reticular layer

Question 13

What is another name for skin?

Answer 13

Cutaneous membrane

Question 14

List the 5 components of the dermis.

Answer 14

1. Sweat Glands
2. Hair Follicles
3. Sensory Nerves
4. Muscular Tissue
5. Various Fibers (collagen, etc.)

Question 15

Be able to identify the structures in the integumentary diagrams.

Answer 15

Layers of the Integument Diagram - Pg. 119

Detailed Hair Diagram - Pg. 130