# 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.

This page titled 4.3: Exercises is shared under a CC BY-SA license and was authored, remixed, and/or curated by Laird C. Sheldahl.