Integumentary System Flashcards

0
Q

Integument came from the Latin word which means

A

Integumentum

To cover

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1
Q

Total surface area of the human skin is approximately

A

18 sq ft

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4
Q

The largest organ of the body is how many percent of the body weight?

A

12-15%

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5
Q

The skin’s most important function is

A

Protection

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6
Q

Main functions of the integ sys?

A
Barrier against infection and injury
Regulate body weight
Remove waste prods from the body
Protect against uv radiation from the sun
Produce vit D
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7
Q

2 layers of the integ sys

A

Epidermis and dermis

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8
Q

Composed of sheets of flattened, scaly epithelial cells

A

Epidermis

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9
Q

Most of its cells undergo rapid cell division or mitosis

A

Epidermis

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10
Q

Tough fibrous protein and forms the basic structure of hair, nails and calluses

A

Keratin

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11
Q

Melanin produced in skin depends on 2 factors

A

Heredity

Length of time the skin is exposed o uv radiation

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12
Q

Absorb uv radiation from sun and excess exposure lead to skin CA such as melanoma

A

Melanin

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13
Q

True or False

There are NO BLOOD VESSELS in epidermis

A

True

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14
Q

Epidermis layers

A
Stratum basale
Stratum spinosum
Stratum granulosum
Stratum lucidum
Stratum corneum
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15
Q

Pigment containing layer of the epidermis

A

Stratum granulosum

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16
Q

This layer is where its amount determines skin color

A

Stratum basale

Melanocytes

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17
Q

Innermost thick layer which lies beneath the epidermis

18
Q

The dermis contains

A

Blood vessels, nerve endings, glands, sense organs, smooth muscles and hair follicle

19
Q

Collagen fibers hat tend to be horizontal forming the creasing of the skin

A

Langer’s lines

20
Q

Classical caesarian cut

“Bikini cut”

A

Pfanensteil

21
Q

Attached o underside of hairs, contraction pull hairs erect causing goose flesh “bumps”

A

Erector pili muscle

22
Q

Pain is detected by

A

Free nerve endings

23
Q

Coldness is detected by

A

Krause end bulbs

24
Q

Pressure and vibration are detected by

A

Pacinian corpuscles

25
Q

On a cold day when the body needs to conserve heat the blood vessels in the dermis

26
Produce watery secretions which contains salt, water and other products
Sweat glands
27
Produce oily secretion called sebum
Sebaceous glands
28
This type of sweat gland is linked to the sympathetic nervous system
Eccrine glands
29
This type of sweat gland is found in the axillary and groin areas
Apocrine glands
30
If skin is subjected to repeated fiction the rate of mitosis will increase and create a thicker epidermis thus called
Callus
31
Layer of fat and loose connective tissue and insulates the body
Hypodermis or subcutaneous layer
32
Tubelike pockets of epidermal cells that extend into the dermis
Hair follicle
33
Hair gets its color from
Melanin
34
Children lacking sufficient vit D develop bone abnormalities known as
Rickets