if you haven't learned about this yet in A&P...

don't worry, because the content in our Program is much, much simpler than A&P I lecture (but still carries over)!

with the hypodermis!

let's start :)

the hypodermis ...

• bottom-most layer

• AKA subcutaneous layer

• functions

  • connect skin to muscles & bones

  • insulate

  • protect

  • store energy

the hypodermis ... (continued)

• made of

  • adipose tissue (AKA fatty tissue)

  • loose areolar connective tissue

now let's assemble the "hypodermis" !

is the dermis!

now, the next "ingredient"...

the dermis ...

• middle layer

• 2 layers

  • papillary layer (20%)

    • areolar connective tissue

  • reticular layer (80%)

    • dense irregular connective tissue

the dermis ... (continued)

• functions

  • energy storage

  • insulation

  • sense touch via receptors

  • secrete sweat/oil

  • enhance gripping ability

the dermis ... (continued)

• made of

  • blood vessels

  • sensory receptors

  • lymphatic vessels

  • sweat glands & sebaceous (oil) glands

  • hair

• basically there's a lot to learn about the dermis ... gonna leave the rest to yall's lecture class

now let's assemble the "dermis" !

one more layer to go...

the epidermis ...

• top layer

• 4-5 layers* (depends on thick or thin skin)

  • stratum corneum

  • stratum lucidum* (only THICK skin)

  • stratum granulosum

  • stratum spinosum

  • stratum basale

• "Come Let's Get Sun Burnt"

the epidermis ... (continued)

• made of

  • stratified squamous epithelial cells

  • keratinocytes

  • melanocytes

  • dendritic cells (Langerhans cells)

  • Merkel cells

  • pigments (melanin, carotene, hemoglobin)

the epidermis ... (cont.)

• functions

  • keratinization

  • protect

  • create pigments

  • "waterproofing"

let's assemble the "epidermis"!

rewards include a free UTA tumbler & chocolate!

let's test your knowledge...

thank you for joining us!!!

happy early Valentine's Day :)

-RPM Janine & RA Liana