Integumentary

Question 1

Keratinocytes

Answer 1

-produces keratin (protein)
-creates waterproof boundary
-protected by melanin

Question 2

Melanocytes

Answer 2

-produces melanin
-freckles, moles
-transfer pigment to Keratinocytes

Question 3

Melanin

Answer 3

pigment that makes skin color and protects from UV radiation

Question 4

Carotene

Answer 4

Yellow orange pigment color and a form of Vitamin A for the body, protecting it from UV light exposure

Question 5

hemoglobin

Answer 5

in blood → pink/red
Depends on blood flow (vasodilation and vasoconstriction)

Question 6

Sebaceous Gland

Answer 6

Secretes oily sebum
Connected to the hair follicle

Question 7

Dermal papillae

Answer 7

adhesive layer between epidermis and dermis; regenerate hair follicle + generate hair shaft

Question 8

Sweat made up of….

Answer 8

water, salts (electrolytes), vitamin C, metabolic wastes
urea, uric acid, ammonia,and lactic acid

Question 9

sudoriferous glands

Answer 9

sweat glands

Question 10

Apocrine glands

Answer 10

one of the types of sweat glands
-less common than eccrine glands
-found in axillary and genital areas
-has ducts that lead to hair follicles

Question 11

Eccrine glands

Answer 11

one of the types of sweat glands
-most common
-ducts lead to pores

Question 12

Cutaneous Membrane

Answer 12

skin membrane
made up of dead skin cells
-dry
(keratinizing-stratified squamous)

Question 13

Mucous Membrane

Answer 13

Lines body cavity that open to exterior (EX: respiratory, urinary, digestive etc)
-wet

Question 14

Serous Membrane

Answer 14

Lines body cavity that closed to exterior (EX: thoracic or abdominal cavities)

Question 15

Pain receptors =

Answer 15

free nerve endings that detect temp and pain

Question 16

Meissner’s Corpuscles

Answer 16

touch receptors that detect light touch

Question 17

Pacinian Corpuscles

Answer 17

deep pressure receptors

Question 18

Dermis

Answer 18

has two regions
- papillary layer
- reticular layer

Question 19

Papillary Layer

Answer 19

• borders epidermis
• has pain receptors
• has meissner’s corpuscles (touch receptors)

Question 20

Reticular Layer

Answer 20

contains
- blood vessels
- sweat and oil glands
- Pacinian corpuscles

Question 21

Functions of Skin

Answer 21

• vitamin d production
• protection
  -detection of stimuli
• excretion
• temperature control

Question 22

Arrector Pili

Answer 22

small bands of smooth muscle connected to hair follicles
- creates ¨goose bumps¨

Question 23

vitamin D

Answer 23

necessary for absorption of calcium and helps with immunity
- vitamin D produced when exposed to UV light

Question 24

Basal Cell Carcinoma
(skin cancer)

Answer 24

most common skin cancer

Question 25

Malignant Melanoma (skin cancer)

Answer 25

most deadly skin cancer

Question 26

Nail and Hair Matrix

Answer 26

nail/hair cells grow from matrix - sheets of hardened keratinocytes