Lesson 3 Flashcards

1
Q
  1. Definition of tegumentum?
A

Cover skin

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2
Q

2.which are the accessory structures?

A

Hair nail gland

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3
Q

3.which are the largest organ?

A

Skin

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4
Q
  1. Skin is an active system?
A

Yes

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5
Q
  1. What is the function of the skin?
A

Body temperature
Removal waste
Vitamin d
Change in the environment
First line of defense

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6
Q
  1. what is the surface of the skin?
A

2m2

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7
Q

7.what is the weight of the skin?

A

4,5-5kg

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8
Q

8.what is the pH of the skin?

A

Acid 5,5

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9
Q

9.Skin is it covered by hair everywhere?

A

No no in palm and feet

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10
Q

10.what is the depth of the skin?

A

0,5 - 4mm

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11
Q

11.How many layers has the skin?

A

2

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12
Q
  1. what is the name of the different layers?
A

Epidermis
Dermis

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13
Q

13.what type of tissue is dermis?

A

Connective tissue

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14
Q
  1. what type of tissue is epidermis?
A

Epithelial tissue

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15
Q

15.where do we find adipose tissue?

A

Hypodermis

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16
Q

16.what type of tissue do we have in hypodermis?

A

Areolar connective tissue
Adipose tissue

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17
Q

17 what is the other name of hypodermis?

A

Subcutaneous tissue

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18
Q
  1. what is the role of the hypodermis?
A

Energy storage physical protection

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19
Q
  1. which type of epithelium do we have in epidermis?
A

Kératinized stratified squamous epithelium

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20
Q

Epidermis is vascularized ?

A

No avascular

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21
Q

21.how many layers do we have in epidermis?

A

5

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22
Q
  1. how many types of cells do we have in epidermis?
A

4

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23
Q

23.do we have nervous sensory ends in epidermis? Yes or no

A

Yes

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24
Q
  1. Give the names of the different types of cells?
A

Mélanocyte
Keratinocyte
Langerhans
Merkel

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25
Q

25.which are the most abundant cell of skin?

A

Keratinocytes

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26
Q
  1. what is the % of this cell?
A

90%

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27
Q
  1. what produce keratinocytes
A

Keratin fibrous protein protection + lamellar granules

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28
Q
  1. Keratinocvtes produce lamellar granules? Yes or no?
A

Yes

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29
Q
  1. what is the % of melanocytes?
A

8%

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30
Q
  1. where is located the melanocytes?
A

Stratum basale

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31
Q
  1. What produce melanocytes?
A

Melanin granule

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32
Q

32.What is the role of melanin?

A

Colour protection uv absorption

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33
Q

33.what is the name of the melanin granules?

A

Melanosomes

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34
Q

34.what is the form of the melanin granules (……?

A

Dendrite like

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35
Q
  1. what are the percentage of Langerhans cells?
A

3-4

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36
Q
  1. where Langerhans cells are the most abundant?
A

Stratum spinosum living cells

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37
Q

37 what is the role of Langerhans cell?

A

Immune response antigen presenting cekls

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38
Q
  1. where is located the Langerhans cells?
A

Living cells

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39
Q

39.langerhans cells are derive from….?

A

Bone marrow

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40
Q
  1. what is the name of the sensory cells?
A

Merkel cells

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41
Q
  1. where are located the sensory cells
A

Stratum basale

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42
Q

42 senrory cells are associated with nothing? True or false?

A

False with sensory neurons

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43
Q
  1. what is the function of the sensory cells?
A

Tactile sensation

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44
Q

44.sensory cells has for function sensory sensations, true or false?

A

False tactile sensation

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45
Q
  1. how many strata (lavers) do we have in the epidermis?
A

4-5

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46
Q

46.which are the deepest layer?

A

Stratum basale

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47
Q
  1. what is the form of the cell in stratum basale
A

Mono layer cuboidal cells

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48
Q

Stratum basale are multilayer true or false

A

False mono layer

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49
Q
  1. what is the function of stratum basal?
A

Régénération germination prolifération structural support

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50
Q
  1. which types of cells do we have in stratum basal?
A

Langerhans mélanocyte keratynocyte Merkel

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51
Q

51.which are the second deepest layer in epidermis?

A

Stratum spinosum

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52
Q
  1. how many layers do we have in stratum spinosum?
A

8 to 10 layers of keratinocytes

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53
Q

53.what is the other name of stratum spinosum?

A

Malpighi

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54
Q

54.what is the form of the cell in stratum spinosum in live skin? In histological preparation

A

Round big
Shrink spiny

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55
Q

55.what is the function of stratum spinosum?

A

Provide strength flexibility

56
Q

56.In stratum spinosum, cells are attached to other cells by…”?

A

Dermosome

57
Q

57.which type of cell do we have in stratum spinosum?

A

Langerhans + mélanocyte

58
Q
  1. how many layers do we have in stratum granulosum?
A

3-5

59
Q

59.what is keratohyalin?

A

A protein that assembled tonofilaments into keratin

60
Q
  1. what is the function of stratum granulosum?
A

Prevent water loss physical barrier

61
Q
  1. which stratum contain dark keratohyalin granules?
A

Granulosum

62
Q

62.where is located stratum lucidum?

A

Only in thick skin

63
Q
  1. how many layers do we have in stratum lucidum?
A

3-5 clear flat dead keratinocytes

64
Q

64.stratum lucidum is located only in thin skin? True or false

A

False thick

65
Q

65.cells in stratum lucidum contain small account of keratin? True or false?

A

False large account

66
Q

66.which stratum is the most superficial?

A

Corneum

67
Q

67.how many layers of cells do we have in this stratum?

A

25-30

68
Q

68.In stratum corneum, we have live keratinocytes? True or false?

A

False dead

69
Q

69 what is the function of stratum corneum?

A

Imperméable protection

70
Q

70.where do we have callus?

A

In stratum corneum

71
Q
  1. What is callus?
A

Abnormal thickening of the epidermis

72
Q

72.Give the steps of stratum from the deepest to the most superficial?

A

• Basale Spino granu luci corneun

73
Q

73.during the growth and keratinization of stratums, scaling and replacement occurs in a … time?

A

2-3 weeks

74
Q

74.what type of tissue do we have in dermis?

A

Connective tissue

75
Q

75.which type of cells do we have in dermis?

A

Fibroblast macrophage adipose cells

76
Q

76.what is the role of the collagen in the dermis?

A

Resistance

77
Q

77.What is the role of the elastic fibers in the dermis?

A

Elasticity flexibility

78
Q

78.what is the function of the dermis?

A

Structural
Immunological
Mechanical
Protection
Homeostasis

79
Q

79.Did dermis has nerve endings?

A

Yes

80
Q

80.which are the different receptors through our skin?

A

Mechanoreceptor
Thermorécepteur
Nocireceptor
Proprioceptor

81
Q

81.what is the name of the receptors for pain?

A

Nociceptor

82
Q

82.what is the name of the receptor for position?

A

Proprioceptor

83
Q

83.what is the name of the receptor for tactile sensation?

A

Merkells

84
Q

84.what is the name of the receptor for pressure?

A

Pacinians

85
Q

85.what is the name of the receptor for fine touch?

A

Meisner

86
Q

86.what did mechanoreceptors?

A

Presque vibration texture

87
Q

87.papillary region is made of which type of tissue?

A

Areolar connective tissue

88
Q

88.whih region is close to the epidermis? Papillary or reticular?

A

Papillary

89
Q

89 .where do we find thin collagen and fine elastic fibers? Papillary or reticular?

A

Papillary

90
Q

90.what is the role of the dermal papillae?

A

Increase contact surface with epidermal ridges

91
Q

91.papillary region don’t contain capillaries? True or false?

A

False contain for nutrition of the epidermis

92
Q

92.did papillary region has corpuscular receptors?

A

Yes mechanoreceptor meissner

93
Q

93.which type of tissue do we have in the reticular region?

A

Dense irregular connective tissue

94
Q

94.the collagen fibers in the reticular tissue are thin. True or false?

A

False thicker for the resistance

95
Q

95.what is the function of the reticular region?

A

Provide resistance extensibility elasticity

96
Q

96 do we have Pacinian corpuscles in reticular region?

A

Yes + sweat and oil glands + pilous follicles + adipose + fibroblast

97
Q

97.what is the origin of the accessory structures of the skin?

A

Embryonic epidermis

98
Q

99.what is the function of nails/hair? Of glands?

A

Protection
Thermorégulation + protection

99
Q

100.what are the different layers of hair?

A

Medulla cortex cuticles

100
Q
  1. where is the hair regeneration?
A

In the hair bulb at the base

101
Q

102.what is the function of hair?

A

Protection + sensorial

102
Q

103 cuticle is not keratinized? True or false?

A

False heavily keratinized

103
Q
  1. which is the most superficial (contact with air) of the 3 structures of hair?
A

Hair cuticle

104
Q

Which is the most deep of the 3 structure of hair

A

Medulla

105
Q

Goosebumps is due to which muscle

A

Arrector pili muscles

106
Q

Which are the name of the different gland accessory structures of the skin

A

Sebaceous
Sweat
Ceruminous

107
Q

What is the form of sebaceous gland

A

Simple branched acinar glands

108
Q

We have sebaceous gland in hand and Palm true or false

A

False

109
Q

Sebaceous don’t open directly to the skin true or false

A

True

110
Q

What is the composition of sebaceous gland

A

Triglycerides
Cholesterols
Proteins
Salts

111
Q

What is the function of sebaceous gland

A

Protection

112
Q

Acne is eccrine gland true or false

A

False an sebaceous

113
Q

Eccrine and merocrine gland are ceruminous gland true or false

A

False they are sweat glands

114
Q

What is the form of sweat gland( simple, compound)

A

Simple coiled tubular glands

115
Q

When start working sweat gland?

A

Soon after birth

116
Q

What is the composition of sweat gland

A

Water uric acid urea ammonia salt

117
Q

What is the function of sweat gland

A

Thermorégulation excretion of urea uric acid ammonia

118
Q

We find sweat gland everywhere ?

A

No not in lips auditory conduct glans

119
Q

Do wa have sweat gland in auditory gconduct? Yes or no

A

No

120
Q

Apocrine gland is a type of sebaceous gland true or false

A

False is a sweat gland

121
Q

What is the function of apocrine gland?

A

Emotional sweating
Sweat during sex
No thermorégulation

122
Q

When star apocrine gland?

A

Starts in puberty

123
Q

Apocrine glands has an apocrine secretion true or false

A

False is has merocrine secretion

124
Q

Apocrine gland secrete oily substance containing..

A

Lipid protein steroid

125
Q

Where do we find apocrine gland

A

Armpit
Groin
Breast Areolar
Anus

126
Q

Mammary glands are an form of

A

Compound tubular acinar glands

127
Q

Hormones regulate the secretion of mammary gland true or false

A

True

128
Q

Where do we find ceruminous glands

A

In external auditory meatus

129
Q

Ceruminous glands produce a waxy secretion called

A

Cerumen

130
Q

What are the function of skin

A

Protection physic
Chemical
Thermorégulation
Vitamin d
Secretion
Sensorial

131
Q

Skin has a physical and chemical and biological protection? True or false

A

True

132
Q

How many Olof water/ day skin secrete?

A

400

133
Q

Did skin secrete ammonia? True or false

A

True + urea

134
Q

Skin synthesis vitamin D hepatic and renal enzymes to produce Calcutta il true or false

A

True

135
Q

What is the function of calcitriol

A

It favors calcium absorption

136
Q

Calcitriol is the most active form of vitamin D true or false

A

True