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Flashcards in Quiz 2 Deck (45):
1

Span of renewal of Stratum basale

15-30 days

2

layer of the epidermis responsible for the regeneration of the other layers in the epidermis

Stratum Basale

3

Binds the stratum basale to the basement membrane

Hemidesmosomes

4

Thickest epidermal layer

Stratum spinosum

5

Characteristic of cells composing the stratum spinosium

Polyhedral Keratinocytes

6

Layer of skin synthesizing keratin

Stratum Spinosum

7

Gives spiny appearance of stratum spinosum

desmosomes

8

Makes up the Malphigian Layer

Stratum Basale and Spinosum

9

Epidermal layer only found in thick skin

Stratum Lucidum

10

What is Psoriasis vulgaris

Abnormal increase in number of proliferating cells in the basal layer

11

Releases pigment to the keratinocytes

Melanosomes

12

Depigmentation disorder resulting from degeneration and disappearance of entire melanocytes

Vitiligo

13

Hereditary inability of melanocytes to synthesize melanin

Albinism

14

Epithelial tactile cells abundant in fingertips and base of hair follicles

Merkel's cells

15

Two layers of dermis

Papillary and reticular

16

Characteristic component of papillary layer

Loose CT

17

Characteristic component of reticular layer

dense irregular CT

18

Responsible for tone and texture of the skin

Dermis

19

Responsible for skin elasticity

Reticular layer of dermis

20

Regular lines of tension in the skin formed by collagen and elastic fibers

Langer's Lines

21

Gland classification of sebaceous gland according to morphology and mechanism of secretion

Simple Branched Acini, Holocrine

22

Glad classification of sweat glands according to morphology

Simple coiled tubular

23

Gland involved in adrenergic sweating

Apocrine glands

24

Gland involved in cholinergic sweating

Eccrine glands

25

Immature cartilage forming cells located at the periphery of the perichondrium

Chondroblasts

26

Chondroblasts trapped in the matrix

Chondrocytes

27

Mature cells surrounded by ECM that lie in lacunae

Chondrocytes

28

Area immediately surrounding chondrocytes

Territorial matrix

29

Most abundant inorganic component of bone

Calcium hydroxyapatite

30

Hormone that stimulates bone matrix production

Parathyroid hormone (PTH)

31

Differentiated osteoblasts surrounded by matrix enclosed with lacunae

Osteocytes

32

Important in bone resorption and bone remodelling

Osteoclasts

33

Hormone that activates bone digestion/resorption

Calcitonin

34

Site of bone growth and resorption

Endosteum

35

Released in acrosome reaction to digest zona pellucida

Acrosin

36

Zona reaction

Inactivates sperm receptors which prevents polyspermy

37

Post fertilization events

Pronucleus formationSyngamyCleavageCompactionMorulation

38

16-cell stage

Morula

39

Forms placenta

Tropoblast

40

Forms embryo

Embryoblast

41

Forms amniotic cavity

Epiblast

42

Divisions of extraembryonic mesoderm

SplanchnicSomatic

43

Determines body axes

Primitive Streak

44

First cels to migrate inward in gastrulation that displace hypoblast cells aside

Endoderm

45

Origin of neural crest

Ectoderm