Lesson 3 Flashcards
- Definition of tegumentum?
Cover skin
2.which are the accessory structures?
Hair nail gland
3.which are the largest organ?
Skin
- Skin is an active system?
Yes
- What is the function of the skin?
Body temperature
Removal waste
Vitamin d
Change in the environment
First line of defense
- what is the surface of the skin?
2m2
7.what is the weight of the skin?
4,5-5kg
8.what is the pH of the skin?
Acid 5,5
9.Skin is it covered by hair everywhere?
No no in palm and feet
10.what is the depth of the skin?
0,5 - 4mm
11.How many layers has the skin?
2
- what is the name of the different layers?
Epidermis
Dermis
13.what type of tissue is dermis?
Connective tissue
- what type of tissue is epidermis?
Epithelial tissue
15.where do we find adipose tissue?
Hypodermis
16.what type of tissue do we have in hypodermis?
Areolar connective tissue
Adipose tissue
17 what is the other name of hypodermis?
Subcutaneous tissue
- what is the role of the hypodermis?
Energy storage physical protection
- which type of epithelium do we have in epidermis?
Kératinized stratified squamous epithelium
Epidermis is vascularized ?
No avascular
21.how many layers do we have in epidermis?
5
- how many types of cells do we have in epidermis?
4
23.do we have nervous sensory ends in epidermis? Yes or no
Yes
- Give the names of the different types of cells?
Mélanocyte
Keratinocyte
Langerhans
Merkel
25.which are the most abundant cell of skin?
Keratinocytes
- what is the % of this cell?
90%
- what produce keratinocytes
Keratin fibrous protein protection + lamellar granules
- Keratinocvtes produce lamellar granules? Yes or no?
Yes
- what is the % of melanocytes?
8%
- where is located the melanocytes?
Stratum basale
- What produce melanocytes?
Melanin granule
32.What is the role of melanin?
Colour protection uv absorption
33.what is the name of the melanin granules?
Melanosomes
34.what is the form of the melanin granules (……?
Dendrite like
- what are the percentage of Langerhans cells?
3-4
- where Langerhans cells are the most abundant?
Stratum spinosum living cells
37 what is the role of Langerhans cell?
Immune response antigen presenting cekls
- where is located the Langerhans cells?
Living cells
39.langerhans cells are derive from….?
Bone marrow
- what is the name of the sensory cells?
Merkel cells
- where are located the sensory cells
Stratum basale
42 senrory cells are associated with nothing? True or false?
False with sensory neurons
- what is the function of the sensory cells?
Tactile sensation
44.sensory cells has for function sensory sensations, true or false?
False tactile sensation
- how many strata (lavers) do we have in the epidermis?
4-5
46.which are the deepest layer?
Stratum basale
- what is the form of the cell in stratum basale
Mono layer cuboidal cells
Stratum basale are multilayer true or false
False mono layer
- what is the function of stratum basal?
Régénération germination prolifération structural support
- which types of cells do we have in stratum basal?
Langerhans mélanocyte keratynocyte Merkel
51.which are the second deepest layer in epidermis?
Stratum spinosum
- how many layers do we have in stratum spinosum?
8 to 10 layers of keratinocytes
53.what is the other name of stratum spinosum?
Malpighi
54.what is the form of the cell in stratum spinosum in live skin? In histological preparation
Round big
Shrink spiny