SKIN DRAWINGInstructions

You will draw the epidermis. 1. There are 5 layers to the epidermis & you will represent each layer within your drawing. Add each of the following epidermal layers and color each as indicated below. Be sure to make the thickness of each layer proportional to what it is in real life (number of cell

layers thick). stratum basale (dark purple) stratum spinosum (orange) stratum granulosum (pink)

Stratum lucidum (clear/white) stratum corneum (white w/ black dashes)

2. Black stars* will represent Melanocytes which produce pigment. Add stars to the Stratum basale, spinosum and granulosum.

3. Green plus signs (+) will represent Keratinocytes which water repel on the skin. Add + to 4 layers.

4. Red dollar signs ($) will represent Langerhans cells which defend against pathogens. Add $ to Stratum spinosum

5. Color & Label each of the following nerve endings as directed below.

free dendrite nerve endings (gray) Merkel discs “light touch” receptor (pink)

6. Make sure to leave room in your epidermis for the hair root to pass through & outside of the epidermis. Label the hair shaft.

7. Write the Four (4) functions of the epidermis.

  GRADING MATRIX: SKIN MODEL 

Points Possible

Score

Epidermis    

1.   Stratum basale (dark purple) & label the layer 2  

1.   Stratum spinosum (orange) & label the layer 2  

1.   Stratum ganulosum (pink) & label the layer 2  

1. Stratum lucidum (white/clear) & label the layer 2

1. Stratum corneum ( white w/black dashes) & label the layer 2

1.   Melanocytes (black *) to basale, spinosum & granulosum & label it’s function

4  

1. Langerhans Cells (red $) to spinosum & label it’s function 2

Keratinocytes (Green +) to all but lucidum & label it’s function 8

1.   Free dendrite nerve endings (grey) up to basale 2  

1.   Merkel discs (pink) to basale & label it’s function 2  

1.   All structures labeled in black marker 6  

1.   4 Function of epidermis indicated 4  

1.   Total 38  

Other

  Neatness 1  

  Wow Factor 1  

Epidermis

You will draw the dermis. Each of the following structures is found within the dermis. Nerves (grey) Meissner's Corpuscles (light brown)Pacinian's Corpusles (light pink) Sebaceous glands (dark

pink)Arrector pili muscles (red) Sudoriferous glands (dark

green)Krause's end bulbs (light blue) Ruffini's Corpuscles

(orange)Arteries - left (red) Veins -right (blue)Capillaries(left½ red; right½ blue) Areolar Connective

tissue(papillary layer = light green)

Hair Root (dark brown) Dense Connective tissue(reticulary layer = light purple)

Write the function of the dermis.

Label all structures’ function. (i.e. sudoriferous gland- sweat gland)

Tape the epidermis above the dermis.

  GRADING MATRIX: SKIN MODEL 

Points Possible

Score

Dermis    

1.   Nerves (gray) to reticular & papillary layers 3  

1.   Meissner’s Corpuscles (light brown) to papillary layer & give function 3  

1.   Pacinian Corpuscles (light pink) to reticular layer & give function 3  

1.   Sebaceous glands (dark pink) to reticular layer & give function 3  

1.   Arrector pili muscles (red) to reticular & papillary layers & give function 4  

1.   Sudoriferous glands (dark green) to reticular layer & give function 3  

1.   Krause’s end bulbs (light blue) to papillary layer & give function 3  

1.   Ruffini’s Corpuscles (orange) to papillary layer & give function 3  

1.   Arteries (red) to reticular & papillary layers 2  

1.   Veins (blue) to reticular & papillary layers 2  

1.   Capillaries (½ red ½ blue) to reticular & papillary layers 2  

1.   Hair Root (dark brown) to reticular & papillary layers 2  

1. Aerolar Connective tissue (papillary layer = light green) 2

1. Dense Connective tissue (reticulary layer = light purple) 2

1.   All structures labeled in black marker 6  

1.   3 Function of dermis indicated 3  

Total 46  

Other

  Neatness 6  

  Wow Factor    

Dermis

You will draw the Hypodermis.

Each of the following structures is found within the hypodermis.

Adipose tissue (yellow) Areolar tissue (light green)

Arteries - superior (red) Veins - inferior (blue)Capillaries (left½ red; right½ blue) Sudoriferous

gland (dark green)Nerves grayTape the hypodermis below the dermis.Write the function of the hypodermis, dermis, &

epidermis.Label all structures with their scientific names &

functional name.

  GRADING MATRIX: SKIN MODEL 

Points Possible

Score

Hypodermis    

1.   Adipose tissue (yellow) 2  

1.   Arteries (red) 2  

1.   Veins (blue) 2  

1.   Capillaries (½ red ½ blue) 2  

1.   Nerves (gray) 2  

1.   Sudoriferous glands (dark green) 2  

1.   All structures labeled in black marker 6  

1.   Function of epidermis indicated 6  

1.   Total 24  

Other

  Neatness 6  

  Wow Factor    

Hypodermis

Skin