The Integumentary System

Fill-in-the-blank flashcards covering the major concepts of the Integumentary System, including structure, layers, components, and the hair and nail apparatus as described in the notes.

The integumentary system includes the skin and the skin derivatives , nails, and glands.

hair

The integumentary system accounts for about % of body weight.

16

The integumentary system includes hair, nails, and as skin derivatives.

glands

The integumentary system's two parts are the Cutaneous membrane and structures.

Accessory

The Epidermis is the stratified squamous epithelium.

vascular

The Dermis is underlying with blood supply.

connective tissue

Cells of the epidermis are called (the most abundant cells in the epidermis).

keratinocytes

The interface between the epidermis and dermis includes epidermal ridges and dermal papillae that form .

fingerprints

Thin Skin covers most of the body and has layers of keratinocytes; Thick Skin has layers.

four; five

From basal lamina to free surface, the five strata of keratinocytes in thick skin are: Stratum basale, Stratum spinosum, Stratum granulosum, Stratum lucidum, and Stratum .

corneum

The Stratum Basale is attached to the basement membrane by and forms epidermal ridges.

hemidesmosomes

Stratum Spinosum contains dendritic (Langerhans) cells involved in the response.

immune

Stratum Granulosum stops dividing and starts producing .

Keratin

Stratum Lucidum is found only in skin.

thick

Stratum Corneum consists of about layers of keratinized cells.

15 to 30

The Papillary Layer consists of tissue.

areolar

The Reticular Layer contains collagen and fibers.

elastic

Dermatitis is an inflammation of the layer.

papillary

Hair follicles are located deep in the .

dermis

The Arrector Pili muscle causes hairs to stand to the skin surface.

perpendicular

The hair root is the part of the hair; the hair shaft is the part.

lower; upper

The medulla is the core that contains soft and air.

keratin

The cortex is the middle layer that provides .

stiffness

The cuticle is the outermost layer that forms the surface.

shiny

Hair head holds UV protection, cushions from trauma, and (insulation).

insulation

Body hair provides detection.

sensory

Root hair plexus detects movement of the .

hair

Arrector Pili contracts to stand hair to the skin surface.

perpendicular

Nails are made of dead cells packed with .

keratin

Nail production occurs in the deep epidermal fold near the bone called the .

nail root

The pale crescent at the base of the nail is the .

lunula

The cuticle is the .

eponychium

The sides of nails lie in lateral nail .

grooves

The visible portion of the nail is called the nail .

body

The Hypodermis lies below the integument and the skin.

stabilizes

The Hypodermis is made of elastic areolar and tissues.

adipose

Deposits of Subcutaneous Fat are distributed according to .

hormones

Cosmetic liposuction (lipoplasty) reduces fat in the .

hypodermis