Integumentary

Question 1

Outermost layer

Answer 1

epidermis

Question 2

Inner layer

Answer 2

dermis

Question 3

Subcutaneous; not actually part of the skin

Answer 3

Hypodermis

Question 4

Thick skin is commonly found in?

Answer 4

Palms, soles, and fingertips

Question 5

5 layers of epidermis (from superficial to deep)

Answer 5

• Stratum Cornuem
• Stratum Licudum
• Stratum Granulosum
• Stratum Spinosum
• Stratum Basale

Question 6

• few to 50 more rows of dead, flat keratin that contain mostly keratin
• no longer contain organelles
• cells continuously shed and replaced by cells from the deeper strata

Answer 6

Stratum Corneum

Question 7

• Present only in skin of fingertips, palms, and sole
• consists of 4-6 rows of clear, flat, dead keratinocytes with large amounts of keratin

Answer 7

Stratum Lucidum

Question 8

• 3 - 5 rows of flattened keratinocytes, in which organelles are beginning to degenerrate
• contains the protein KERATOHYALIN and LAMELLAR GRANULES

Answer 8

Stratum Granulosum

Question 9

Which layer is the keratohyalin and Lamellar granules found?

Answer 9

Stratum Granulosum

Question 10

Water-proofing glycolipids (slows water loss in epidermis)

Answer 10

Lamellar granules

Question 11

• 8 - 10 rows of many sided keratinocytes with bundles of keratin intermediate filaments
• contains Langerhans cells

Answer 11

Stratum Spinosum

Question 12

• Deepest layer, composed of single row of cuboidal or columnar keratinocytes that contain scattered tonofilaments

Answer 12

Stratum Basale

Question 13

• stem cells undergo cell division to produce new keratinocytes
• melanocytes and tactile epithelial cells associated with tactile discs are scattered among keratinocytes

Answer 13

Stratum Basale

Question 14

2 Layers of dermis (superficial to deep)

Answer 14

Papillary layer
Reticular layer

Question 15

Small, nipple-shaped structure under epidermal layer, projects into the under surface of epidermis, Provides nourish to the epidermal layer and helps adhesion between epidermal and dermal layer

Answer 15

Dermal Papillae

Question 16

Avascular or vascular: Epidermis

Answer 16

Avascular

Question 17

Avascular or vascular: Dermis

Answer 17

Vascular

Question 18

• superficial portion of the dermis
• consists of areolar connective tissue with thin collagen and five elastic fibers
• contains dermal ridges that house blood capillary, corpuscles of touch, free nerve ending

Answer 18

Papillary region

Question 19

• deeper portion of dermis
• consist of dense connective tissue with thick collagen and course elastic fibers
• spaces between fibers contain adipose cells, hair follicles, nerves sebaceous and sudoriferous glands

Answer 19

Reticular region/layer

Question 20

Other term for sudoriferous glands?

Answer 20

Sweat glands

Question 21

Other term of sebaceous gland?

Answer 21

oil glands

Question 22

Hair follicle surrounds the _____?

Answer 22

Hair root

Question 23

• deep to the dermis, also known as subcutaneous layer

Answer 23

Hypodermis

Question 24

• not actually part of the skin
• consists of areolar and adipose tissues
• fibers extend from dermis to anchor the skin to the subcutaneous layer
• attaches to the underlying fascia

Answer 24

Hypodermis

Question 25

4 receptors of skin

Answer 25

* free nerve ending * Meissner's corpuscles * Pacinian Corpuscles * Hair follicle

Question 26

* Papillary layer to epidermis * found in the papillary * Detects pain and extreme temperature * needed to maintain homeostasis

Answer 26

Free nerve ending

Question 27

* "Touch corpuscles" * detects light touch and slow vibration

Answer 27

Meissner's Corpuscles

Question 28

* Detects pressure and fast frequency vibration

Answer 28

Pacinian Corpuscles

Question 29

* Surrounds hair root * extends from under the skin to epidermis to hypodermis * detects light touch

Answer 29

Hair follicle

Question 30

Skin appendages

Answer 30

* Hair shaft * hair root * hair bulb * arrector pili muscles * Eccrine sweat glands * Sebaceous glands

Question 31

* superficial part of the hair that protrudes above the skin

Answer 31

Hair shaft

Question 32

* deep portion of the staff that penetrates to the dermis and sometimes hypodermis

Answer 32

Hair root

Question 33

* onion-shape, bottom of the hair root

Answer 33

Hair bulb

Question 34

Nipple-shaped protrusion on the hair bulb/root

Answer 34

Hair papilla

Question 35

* Attached to the skin * Sudoriferous gland

Answer 35

Arrector Pili Muscles

Question 36

3 concentric layer of the hair

Answer 36

* Medulla * cortex * cuticle

Question 37

Inner layer of hair; seen in thick-stranded hair

Answer 37

Medulla

Question 38

Outer layer of the hair

Answer 38

Cortex

Question 39

* or "Piloerector muscle" * Smooth muscle responsible for goosebumps

Answer 39

Arrector Pili Muscle

Question 40

* secretes oil or sebum

Answer 40

Sebaceous glands

Question 41

2 types of sweat glands

Answer 41

Eccrine, apocrine

Question 42

(sweat glands) more numerous, more abundant in palm, soles, forehead

Answer 42

eccrine sweat glands

Question 43

(sweat glands) found in axillary, anal, and genital area

Answer 43

Apocrine sweat glands