Integumentary system Amoeba Sisters

Keratinocytes

Cells that make keratin

keratin

protein that helps cells be water resistant and tough

Keratinocytes

Cells that make keratin

keratin

protein that helps cells be water resistant and tough

bottom layer of the epidermis

where is keratin produced

cornified cells

hardened, flat and dead that are just filled with keratin

strateum corneum

Outer Top layer

strateum corneum

layer that consists of cornified cells

stratum lucidum

second layer

stratum lucidum

only found in thick skin areas and contain cornified cells that give them a transparent appearance

stratum granulosum

third layer

straum granulosum

keretinocytes will flatten and contain granules

stratum spinosum

4th layer

stratum spinosum

many layers of keratinocytes, and will consume worn-out cells

stratum basale

5th layers

stratum basale

consists of basal cells that do mitosis and give rise to keratinocytes to the layers above

melanocytes

makes melanin that result in different array of skin color

stratum granulosum

they will also eventually lose their organelles

merkel cells

help have sense of touch

dermis

you will find blood vessels in the

dermis

type of connective tissue

hair follicles, sweat glands, nerves

other things in the dermis

collagen and elastin

2 types of protein in the dermis

fibroblast

what makes collagen and elastin

papillary and reticular layer

layers of the dermis

papillary layer

loose connective tissue

reticular layer

connective tissue is packed

hypodermis

connects the skin above to bone and muscle

hypodermis

contains adipose tissue

adipose tissue

stored body fat

sweat glands

important for cooling the body

widen, escape

blood vessels will ___ so that heat can ____

produce oil and help keep skin and hair waterproof and lubricate

sebaceous glands