Integumentary System Amoeba sisters

skin

____ is critical for maintaining homeostasis and helps maintain internal body temperature and fluid balance

physical barrier, internal structures, bacteria, vitamin d

the skin is a p_____ b____ and protect i____ s____ from being damaged protects from invasion of b____ and v____ _ is produced

keratinocytes, keratin

cells can be found in different location in the epidermis called ____that make ____ which help cells be water resistant

cornified cells

they are made at the bottom layer of the cells and are pushed upward where they are now considered as ___

cornified cells

_____ ____ are hardened, flattened and dead and they are just full of keratin

stratum corneum

The first layer of th epidermis is the ____ ____ which consists of cornified cells and consistently shed off with replacement cells

stratum lucidum

the second layer is _____ ____ which also contains cornified cells which is only found in thick areas of the skin

stratum granulosum

the third layer is ___ ____ where keratinocytes will develop a flatter structure and they contain granules

stratum spinosum

the fourth layer is ___ ____ that will consume worn out cells and bacteria

stratum basale

the fifth layer is ___ ___ consists of basal cells which are constantly doing mitosis and give rise to keratinocytes

calluses

_____ form when the stratum basale layer is trying to respond to frequent abrasion by making more cells which make a thicker stratum corneum

melanocytes, melanin

the stratum corneum also has different cells like ____ which makes the protein called ____

melanin

______ is a pigment that can result in a different arrays of skin color which can be damaged by UV rays

melanosomes

melanin gets transported to keratonixytes in organelles called ____

Merkel

_____ cells are another cell type that work with the nerves fo our sense of touch

dermis

the ____ is a connective tissue with sweat glands, air follicles and nerves

collagen, elastin

the demris has 2 fbers of protein which is ____ which provides support and ____ which provides elasticity

fibroblast

these proteins are made by specialized cells in the layer called ____

papillary, reticular

the dermis has 2 general layers, a ____ layer, which has connective tissue general loose and a deeper ____ layer where connective tissue is more tightly packed

hypodermis

the ____ contains adipose tissue which is stored body fat and connects the skin to bone and muscle tissue

insulation

hypodermis important functions such as ___

Blood vessels

____ ____ help with temp regulation and it ocnstricts to be kept away from the surface of the skin so that heat can be conserved

sebaceous glands

____ ____ produce oil and help keep the skin and hair waterproof