Chapter 5; Bio 210 (Integumentary System) Flashcards

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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
Q

Rickets

A

form in bones from insufficient amount of vitamin D

26
Q

Dermis: Paillary layer

A

(20% of dermis) loose and areolar tissue

  • contains small capillaries
  • contains dermal papillae
27
Q

Dermis: Reticular Layer

A

(80% of dermis) dense irregular connective tissue

-larger vessels

28
Q

Sensory structure in epidermis

A

Merkel cells

29
Q

Sensory structures in dermis

A

Meissner and Pacinian corpuscle

30
Q

Pesudorifris glands

A

sweat glands (NOT sebum, not oil)

31
Q

Holocrine

A

destorys and lysis

32
Q

Merocrine

A

exocytosis

33
Q

Apocrine

A

pinching off

34
Q

Merocrine sweat glands

A

most of the body

-palms of the hands, coiled tubular

35
Q

Apocrine sweat glands

A

armpits and nipples that break down and cause odors

36
Q

Thermoregulation

A

helps maintain homeostasis that works with cardiovascular system

37
Q

Fibrosis

A

formation of scar tissue

38
Q

Ceruminous Glands

A

produces earwax

modified eccrine gland