Chapter 5: The Integumentary System

Front 1

Cutaneous Membrane

Back 1

Two component: epidermis and the dermis.

Front 2

Epidermis

Back 2

Protects the dermis ; prevents water and entry of pathogens and sythesis vitamin D3.

Front 3

Dermis

Back 3

Papillary Layer: Nourishes and supports epidermis

Reticular Layer: Has sensory receptors that detect touch, pressure, pain, vibration and temperature.

Front 4

Startum Granulosm

Back 4

Contains three to five layers of keratinocytes derived from the stratum spinosum. Most cells in the layer have stopped dividing and have stared making large amounts of protein keratin and keratohyalin.

Front 5

Startum Spinosum

Back 5

This stratum consist 8 to 10 layers of keratinocytes bound together by desmosomes.

Front 6

Stratum Corneum

Back 6

Contains between 15 to 30 layers of kertainized cells. Flattened, dead, interlocking keratinocytes. Water resistant but not waterproof.

Front 7

Keratinocytes

Back 7

Several layers or strata and contain large amounts of the protein keratin.

Front 8

Thin Skin

Back 8

Covers most of the body's surface

Front 9

Thick Skin

Back 9

Found on the palms of the hand and the soles of the feet.

Front 10

Langerhans Cells

Back 10

Cells in the epithelium on the skin and digestive tract that particapiate in the immune response by presenting antigens to T-Cell.

Front 11

Keratin

Back 11

the tough, fibrous protein compound of nails, hair, calluses and the general integumentary system.

Front 12

dermal papillae

Back 12

Extend into the dermis and are adjacent o dermal projections that project into the epidermis.

Front 13

Lines of Cleavage

Back 13

The result of patterns of fiber bundles in the skin. Also called tension lines and larger lines. A cut on the cleavage line will usually remain closed and heal with little to no scaring.

Front 14

carotene

Back 14

the orange yellow pigment that normally accumulates in epithelium cells. Also found in the deep dermis and subcutaneous layer.

Front 15

melanin

Back 15

Pigment produced by malanocytes pigment producing cells. Two types of melanin, red-yellow (pheomelanin) and brown-black (eumelanin)

Front 16

Subcutaneous Layer (Hyperdermis)

Back 16

Stabilizes the position of the skin in relation to underlying tissues i.e. skeletal muscle or other organs, while permitting independent movement.

Front 17

Vellus Hairs

Back 17

The fine "peach fuzz" hair located over much of the body's surface.

Front 18

Terminal Hairs

Back 18

Heavy, more deeply pigmented and sometimes curly. i.e. hair on your head, eyebrow and eyelashes.

Front 19

Sebaceous Glands

Back 19

Ducts that discharge sebum (oil) directly into the epidermis. i.e. face, back, chest, nipples, and external genitalia

Front 20

Nails

Back 20

Protect the exposed dorsal surface of the tips of the fingers and toes.

Front 21

Nail Root

Back 21

An epidermal fold not visible from the surface. Lies very close to the bone of the finger.

Front 22

Vasodilation

Back 22

increase in the diameter of arterioles due to the contraction of smooth muscle in the tunica media.

Front 23

Necrosis

Back 23

death of a cell or tissue from disease or injury

Front 24

pus

Back 24

Accumulation of debris, fluid, dead and dying cells and necrosis tissue.

Front 25

Granulation tissue

Back 25

Combination is blood clot, fibroblast and extensive capillary network the base of a wound.

Front 26

Scab Tissue

Back 26

The thick collagenous tissue that forms at an injury site.

Front 27

Inflammatory Response

Back 27

1. Inflammatory Phase- bleeding and inflammation.

2.Migratory Phase- formation of scab and granulation tissue.

3. Proliferation- loss of granulation tissue and undermining scab

4. Scarring- ends with the creation of scar tissue.

Front 28

Keloids

Back 28

A raised area of fibrous scar tissue.