Quiz 2 Flashcards

1
Q

Span of renewal of Stratum basale

A

15-30 days

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2
Q

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

A

Stratum Basale

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3
Q

Binds the stratum basale to the basement membrane

A

Hemidesmosomes

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4
Q

Thickest epidermal layer

A

Stratum spinosum

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5
Q

Characteristic of cells composing the stratum spinosium

A

Polyhedral Keratinocytes

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6
Q

Layer of skin synthesizing keratin

A

Stratum Spinosum

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7
Q

Gives spiny appearance of stratum spinosum

A

desmosomes

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8
Q

Makes up the Malphigian Layer

A

Stratum Basale and Spinosum

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9
Q

Epidermal layer only found in thick skin

A

Stratum Lucidum

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10
Q

What is Psoriasis vulgaris

A

Abnormal increase in number of proliferating cells in the basal layer

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11
Q

Releases pigment to the keratinocytes

A

Melanosomes

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12
Q

Depigmentation disorder resulting from degeneration and disappearance of entire melanocytes

A

Vitiligo

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13
Q

Hereditary inability of melanocytes to synthesize melanin

A

Albinism

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14
Q

Epithelial tactile cells abundant in fingertips and base of hair follicles

A

Merkel’s cells

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15
Q

Two layers of dermis

A

Papillary and reticular

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16
Q

Characteristic component of papillary layer

A

Loose CT

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17
Q

Characteristic component of reticular layer

A

dense irregular CT

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18
Q

Responsible for tone and texture of the skin

A

Dermis

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19
Q

Responsible for skin elasticity

A

Reticular layer of dermis

20
Q

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

A

Langer’s Lines

21
Q

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

A

Simple Branched Acini, Holocrine

22
Q

Glad classification of sweat glands according to morphology

A

Simple coiled tubular

23
Q

Gland involved in adrenergic sweating

A

Apocrine glands

24
Q

Gland involved in cholinergic sweating

A

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