4.3: Exercises
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EPIDERMAL LAYERS
& Physiology Lab Homework by Laird C. Sheldahl, under a Creative Commons Attribution-ShareAlike License 4.0
Lab 4 Exercise \(\PageIndex{1}\)
Integument Layers

Label the following: *Hair follicle * Sebaceous gland * Epidermis * Dermis (papillary layer) *Dermis (reticular layer) * Hypodermis * Arrector pili muscle * Sweat gland.
1 | Hair follicle |
2 | Sebaceous gland |
3 | Epidermis |
4 | Dermis (papillary layer) |
5 | Dermis (reticular layer) |
6 | Hypodermis |
7 | Arrector pili muscle |
8 | Sweat gland |
9 |
Lab 4 Exercise \(\PageIndex{2}\)
Epidermal Layers

Label the following: Stratum corneum * Stratum lucidum * Stratum granulosum * Stratum spinosum * Stratum basale * Dermal papilla * Sweat duct * Sweat pore * Stratified squamous epithelium * Dendritic cell * Melanocyte
1 | Stratum corneum |
2 | Stratum lucidum |
3 | Stratum granulosum |
4 | Stratum spinosum |
5 | Stratum basale |
6 | Dermal papilla |
7 | Sweat duct |
8 | Sweat pore |
9 | Stratified squamous epithelium |
10 | Dendritic cell |
11 | Melanocyte |
Lab 4 Exercise \(\PageIndex{3}\)
Skin Accessories

Label the parts of a hair follicle: Sebaceous gland * Hair shaft * Hair bulb * Hair root * Hair papilla
1 | Sebaceous gland |
2 | Hair shaft |
3 | Hair bulb |
4 | Hair root |
5 | Hair papilla |
Label the parts of a nail: Eponychium * Free edge * Hyponychium * Lunula * Nail matrix * Nail root * Lateral nail fold * Nail bed * Nail plate.
1 | Eponychium |
2 | Free edge |
3 | Hyponychium |
4 | Nail matrix |
5 | Nail root |
6 | Lateral nail fold |
7 | Nail bed |
8 | Nail plate. |
Lab 4 Exercise \(\PageIndex{4}\)
Integument Layers

Histology: Hair * Hair follicle * Dermal papilla * Sebaceous gland * Eccrine sweat gland * Stratified squamous epithelium * Areolar CT * Dense irregular CT.
1 | Hair follicle |
2 | Dermal papilla |
3 | Sebaceous gland |
4 | Eccrine sweat gland |
5 | Stratified squamous epithelium |
6 | Areolar CT |
7 | Dense irregular CT. |