integumentary system

Created by CourtPed 

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66 terms

cutic

skin (subcutaneous)

derma

skin (dermis)

epi

over, above

folli

bag

kerat

horn

melan

black

seb

grease

cyan

dark blue

sudor

sweat

Stratum Basale

the man mitotic nuclei seen in this layer reflect the rapid division of cells

Stratum Spinosum

"prickly layer" or the epidermis

Stratum Granulosum

where keratinocytes begin to flatten and their nuclei and organelles begin to disintegrate

Stratum Lucidum

"Clear Layer" of the epidermis

Stratum Corneum

"horny layer" of the epidermis

Epidermis

where the major portions of hair follicles as well as oil and sweat glands are derived from

necrosis

prolonged pressure causes blood flow to the skin to stop, which eventually leads to the breaking down of the tissue

Dermal Papillae

peg-like projections on the superior surface that indent the overlying epidermis

Epidermal Ridges

finger prints

Papillary

thin superficial layer of areolar CT in which the collagen and elastic fibers are heavily invested with blood vessels

Reticular

consists of dense irregular CT containing collagen and elastic fibers, adipose cells, hair follicles, nerves, and sebaceous and sudoriferous glands

Homeostatic imbalance

short term but acute trauma can cause a blister

Melanin, Carotene, and hemoglobin

3 pigments that influence skin color

melanin

yellow-red pigment

Nevus

a benign localized overgrowth of melanocytes

vitilago

a condition in which there is a partial or complete loss of melanocytes from patches of skin

Carotene

pigment found in the stratum corneum, dermis, and subcutaneous layer

Hemoglobin

located in erythrocytes flowing through dermal capillaries

Erythrocytes

contain hemoglobin, flow through dermal capillaries

protection, insulation, and sensory

3 functions of hair

medulla, cortex, and cuticle

concentric layers of hair, deep to superficial

trichosiderin

Iron containing pigment that turns hair red

Hair bulb

the deep, expanded end of the hair follicle

Hair follicle receptor

a knot of sensory nerve ending that wraps around each hair bulb

Hair papilla

nipple-like bit of dermal tissue that protrudes into the hair bulb

Vellus and terminal

2 types of hair

Anagen, Catagen, and Telogen

3 growth cycles of hair

Alopecia

baldness

proteins

appears to be under control of the the lifespan of hair

Sudoriferous

type of gland all over the body except for the nipples and parts of the external genitalia

Eccrine or Merocrine

most numerous sweat gland, very abundant on the palms, soles, and forehead

Dermicidin

microbe killer

Apocrine

gland common only in axillary and anogenitary areas

Ceruminous

gland found in the lining of the external ear

Sebaceous

gland found all over the body except palms and soles

Sebum

has bactericidal actions

Chemical, Physical/Mechanical, and Biological

3 types of protection provided by the integumentary system

melanin (prevents UV damage)

one chemical barrier for protection supplied integumentary system

glycolipids block the diffusion of water in and out of the body

one physical/mechanical barrier for protection supplied by the integumentary system

Langerhans' cells (immunity agent)

one biological barrier for protection supplied by the integumentary system

Protection, Body Temperature Regulation, Cutaneous Sensation, Metabolic Functions, Blood Resevoir, and Excretion

6 Functions of the integumentary system

Hypodermis

Body temperature regulation of the integumentary system

Merkel Cells

Cutaneous Sensation of the integumentary system

sunlight converts cholesterol in dermal blood vessels to a vitamin D precursor

Metabolic function of the integumentary system

Vitamin D

used by the digestive tract in order to absorb calcium

Papillary level of the dermis

Blood reservoir in the integumentary system

Sweating

Excretion in the integumentary system

Cancer

a logical, coordinated process in which a precise sequence of tiny alterations changes a normal cell into a killer

neoplasm

formed when cells fail to honor normal controls of cell division and multiply excessively

malignant cells

resemble immature cells and invade their surroundings rather than pushing them aside

metastasis

the capability of malignant cells to travel

Biopsy

removing a tissue sample surgically and examining it microscopically for malignant cells

Melanoma

most dangerous skin cancer because it is highly metastatic and resistant to chemotherapy

Asymmetry, Border irregularity, Color, and Diameter

ABCD rule stands for this

First-Degree

burn in which symptoms are localized redness, swelling and pain

Second-Degree

burn in which symptoms are localized redness, swelling, pain, and blisters

Third-Degree

burn in which symptoms are burned area appears grey, red, or black

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