SKIN Flashcards

(52 cards)

1
Q

stratified squamous epithelium - can prevent loss of water.

A

Dehydration

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2
Q

protects us from entry of pathogens by keeping the skin healthy or unbroken.

A

Microbes

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3
Q

disease causing microbes

A

Pathogens

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4
Q

study of diseases.

A

Pathology

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5
Q

Healthy unbroken skin is always our (blank) of defense to prevent the entry of pathogens

A

First line

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6
Q

Sensory receptors detect heat, cold, touch, pressure, pain:

A

Sensation

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7
Q

are “NERVES” that recieves info and deliver to brain.

A

Sensory receptors

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8
Q

needed in calcium homeostasis.

A

Vit. D production

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9
Q

INFO

A

Sun don’t provides vit. D but rather UV rays only.

  • Sun activates vit. D, calcium then will be absorbed easily which makes bones stronger.
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10
Q

FUNCTIONS OF THE INTEGUMENTARY SYSTEM

A

-protection
-UV
-sensation
-Microbes
-temperature regulation
-excretion

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11
Q

amount of blood flow and activity of sweat glands.

A

Temperature Regulation

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12
Q

Normal Temperature

A

37°c

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13
Q

Freezing point

A

0°c

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14
Q

(prevents blood from escaping to keep you warm from the surface.)

A

Colds

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15
Q

escapes to normalize body temperature / body heat from the surface:

A

Hot

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16
Q

INFO

A

Normal blush- low temperature
Rush of blood - cold

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17
Q

release waste products and through gland secretion.

A

Excretion

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18
Q

Eliminate

A

Excretion

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19
Q

Produce

A

Secretion

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20
Q

2 MAJOR TISSUE LAYERS OF THE SKIM

A

-EPIDERMIS
-DERMIS

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21
Q

layer of stratified squamous epithelium

  • Prevents water loss (microbes, UV Rays).

-resist abrasion

  • Keratinization.

-Forms strata/layers-5layers
(thinner layer made of 5 layers. Stratum singular)

  • responsible for protection

AVASCULAR (without blood vessels)

22
Q

deepest

23
Q

Most superficial

24
Q

layer of dense connective tissue w/ fibroblast, fat cells, macrophages.

  • Collagen and elastic fibers are responsible for most of the structural strength.

-Cleavage or tension lines.

  • dermal papillae
    -“TRUE SKIN”( thicker layer)
    -has to do with the major functions.
  • nerve endings located
    -with blood vessels
25
extensions of the dermis up towards the epidermis. - to supply blood & oxygen into the epidermis. -form of fingerprint Ithumbs that makes you unique.
Dermal papillae
26
It is protein process keratin becomes deposited into cytoplasm. Cells begin to harden provides extra protection subjected to the surfaces, hard parts of the body, friction.
Keratinization
27
(huge WBC that engulf foreign bodies)/ Phagocytize for bacterias. big cell eating
Macrophages
28
Below the skin, not part of skin; subcutaneous tissues. LOW SKIN
Hypodermis
29
pigment that gives human color; responsible for the color of the skin, hair, eyes. shade of brown to black
MELANIN
30
What leads to skin variations when there's only one pigment?
the amount of melanin produced in the skin. -lesser the amount of melanin- Lighter skin -greater the amount of melanin- Black skin
31
(green) that has red insides. - Cell produced melanin
Melanocyte —> (green) that has red insides. - Cell produced melanin nucleus (violet (purple) nucleolus (dark)
32
red inside melanocytes. - (Phagocytosis)tiny sacs carries pigment (melanin) formed by membranes of Golgi body apparatus, now it is ... -Stored Melanin
Melanosomes
33
genetic condition prevents production of melanin. - recessive genetic trait. ex. Redford white
Albinism
34
•How can epidermis protects us from UV rays?
Melanocytes that produce melanin. Melanin- shields us from UV rays
35
effect of hormones; - may show darker areas of skin parts; aumpit, neck
CAUSE SKIN VARIATIONS
36
outgrow / derivative of our skin. • found in all parts of the skin except lips, palms, soles of feet, nipples, some parts of genitalia.
HAIR
37
where each hair arises from - begins from the epidermis deepen to (envaginate) dermis. envagination into dermis.
Hair follicle
38
below the skin
Hair Root
39
visible above the skin (arise from the skin)
Hair Shaft
40
base of the hair root / expanded base of the hair root.
Hair Bulb
41
INSIDE THE HAIR THERE ARE DIFFERENT LAYERS:
Cortex Medulla Cuticle
42
outer layer; Harder layer of the hair.
Cortex
43
softer center.
MEDULLA
44
- outer wrapped by a (blank) - covering the entire hair made up of single layer of cells that covers the cortex.
Cuticle
45
1.)Hair Produced from ↓ rest on the hair papilla ↓ 2.)extension of the dermis.
HAIR BULB HAIR PAPILLAE
46
hair is formed from the epithelial cells of the hair bulb. -Cells are actually keratinized. - Grows longer due to accumulation of more dead cells / keratinized at the hair bulb pushing up the columns of the hair.
Growth Stage
47
- hair doesn't lengthen long duration of time/period, stays that way (eyelash, eyebrows) -than hair— longer growing period, more length. (hair).
Rest stage
48
- simple contubular that produce THICK secretion. - rich in organic substance release during the time especially during puberty. Active in puberty found in armpit, genetalia. -secretion is usually odorless : Bacteria acts on it (Body odor)
APOCRINE SWEATGLANDS
49
-release sweat by the glands - found almost all parts of the skin palm, sole, dapa-dapa) -Produce WATERY secretion which evaporates and cools the body. -helps in regulating body temperature
MEROCRINE SWEATGLANDS)
50
Closely associated with the hair follicle.
SEBACEOUS GLAND
51
needed to be released to the hair to soften & nourish.
Sebum Oil
52
MEMORIZE ANATOMY OF NAIL
-free edge(cut/nautod) - nail body put nail polish) -Lunula of crescent-while-shape) - Eponychium (cuticle) - skin after lunula (cuts using nipper) -nail root (where the nail grows from) - nail is attached to the underlying NAIL BED