Integumentary (Skin, Cutaneous) Epidermis

0.0(0)
Studied by 0 people
call kaiCall Kai
Locked
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
GameKnowt Play
Card Sorting

1/6

encourage image

There's no tags or description

Looks like no tags are added yet.

Last updated 12:29 AM on 9/21/26
Name
Mastery
Learn
Test
Matching
Spaced
Call with Kai
Chat

No analytics yet

Send a link to your students to track their progress

7 Terms

1
New cards

Functions

  • Protection

  • Prevention of H2O loss/gain

  • Body Temp. Reg.

  • Cutaneous Sensation

  • Metabolic Functions

  • Blood Reservoir

  • Excretion of Wastes

  • Absorption


2
New cards

Five Layers

keratinized, stratified squamous

-1st 3 layers living keratinocytes, last 2 layers- dead dying

3
New cards

Stratum Basale (1) Living

  • 3 Cell Types:

  1. Keratinocytes: produce keratin

  2. Melanocytes: scattered among pre-keratinocytes

- produce melanin transferred to keratinocytes by melanosomes

  1. Merkel/Tactile: respond to light touch & FREE NERVE ENDINGS: respond to pain


4
New cards

Stratum Spinosum (spikey) (2) Living

-connected by desmosomes (reason y keratinocytes look spikey); allows to resist tension & pulling

-Melanosomes & Dendritic (Langerhans)- patrol & defend against microbes & skin cancer


5
New cards

Stratum Granulosum (Grainy) (3) Living

-cells flattened, layer thin

  • Keratinization: cells accumulate keratohyalin granules (form keratin fibers in upper layers)

-cells accumulate water resistant glycolipid (slows H2O loss)

6
New cards

Stratum Lucidum (4) Dead

-only in thick skin (palms & soles), sweat glands

-thin, translucent rows of clear, flat, dead keratinocytes filled w/ eleidin

7
New cards

Stratum Corneum (5) Dead

-flat, enucleated, keratinized dead cells connected- desmosomes

-barrier against biological, chemical, & physical assaults