Chapter 5; Bio 210 (Integumentary System) Flashcards

(38 cards)

1
Q

Direction of Cell Movement in the Integumentary System

A
Basale (deep- 
Spinosum
Granulosum
Lucidum
Corneum (superficial)
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2
Q

Cutaneous Membrane

A

Epidermis and Dermis

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3
Q

Integumentary System compose of

A

Integument
Hair
Nails
Exocrine Glands (oil sweat)

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4
Q

Epidermis

A

stratified squamous

  • avascular
  • innervated
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5
Q

Thick Skin

A

palms and soles of feet (5 Layers) has LUCIDUM

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6
Q

Thin Skin

A

hair folecule typically evident (4 Layers) no lucidum

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7
Q

Melanocyte

A

determines hair color (located in bulb of follicle)

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8
Q

Arrector Pilli

A

smooth muscle in each hair follicile

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9
Q

Sebaceous Glands

A

produce sebum (oil)

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10
Q

Eccrine (sweat) Glands

A

coiled tubular glands

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11
Q

Carotene

A

yellow pigment that can accumulate in the stratus corneum

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12
Q

Cleavage Lines

A

lines in the skin that go different directions (dense irregular tissue)

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13
Q

Jaundice

A

malfunction of liver and bile can’t be excreted, may accumulate in skin.

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14
Q

Pituitary Malfunction

A

tumors cause secretions of MSH (Melanocyte stimulating hormone) darkens the skin.

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15
Q

Layers of Skin:

A
Stratum Corneum
Stratum Lucidum
Stratum Granulosum
Stratum Spinosum
Stratum Basale
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16
Q

Melanin

A

responsible for skin color

17
Q

Stratum Corneum

A

most superficial layer of the epidermis (protein envelope and protection by keratin)

  • dead squamous cells
  • cornified cells (dead cells)
18
Q

Stratum Lucidum

A

3 to 5 layers thick of dead cells

-appears transparent (thick skin)

19
Q

Stratum Granulosum

A

2 to 5 layers of flat diamons shaped cells that

-release lipids

20
Q

Stratum Spinosum

A

8 to 10 layers of many-sided cells

-produces keratin fibers

21
Q

Stratum Basale

A

single layer of cuboidal or columnar cells
-basement membrane that attaches to the dermis
-produce melanocytes
protect against UV light

22
Q

Dermal Papilla

A

little humps that shape the phalange print

23
Q

Melanin

A

determines skin color by the rate of production of melaninocytes NOT how many.
As a species we have about the same number of melanocytes

24
Q

Calcitirol

A

essential for normal absorption of Ca and P

25
Rickets
form in bones from insufficient amount of vitamin D
26
Dermis: Paillary layer
(20% of dermis) loose and areolar tissue - contains small capillaries - contains dermal papillae
27
Dermis: Reticular Layer
(80% of dermis) dense irregular connective tissue | -larger vessels
28
Sensory structure in epidermis
Merkel cells
29
Sensory structures in dermis
Meissner and Pacinian corpuscle
30
Pesudorifris glands
sweat glands (NOT sebum, not oil)
31
Holocrine
destorys and lysis
32
Merocrine
exocytosis
33
Apocrine
pinching off
34
Merocrine sweat glands
most of the body | -palms of the hands, coiled tubular
35
Apocrine sweat glands
armpits and nipples that break down and cause odors
36
Thermoregulation
helps maintain homeostasis that works with cardiovascular system
37
Fibrosis
formation of scar tissue
38
Ceruminous Glands
produces earwax | modified eccrine gland