lab 3 pt 3

Epidermis

Keratinized stratified squamous epithelium.

Keratin location in skin

Found in the epidermis.

Stratum granulosum

Contains keratin granules.

Stratum lucidum appearance

Appears clear.

Location of stratum lucidum

Only found in thick skin.

Thick skin location

Found on the palms and soles.

Thick skin hair presence

No hair.

Thin skin hair presence

Yes, has hair.

Difference between thick and thin skin

Thick skin has no hair, is found on palms and soles, and has thicker epidermal layers.

Dermis connective tissue type

Dense irregular connective tissue.

Two layers of the dermis

Papillary layer and reticular layer.

Visual distinction of papillary and reticular layers

The papillary layer forms the 'hills,' while the reticular layer is everything below those hills.

Hypodermis connective tissue

Adipose connective tissue.

Another name for hypodermis

Subcutaneous layer.

Skin preparation containing stratum lucidum

Skin–Human Sole, representing thick skin.

Skin preparation containing hair follicles

Skin–Hair Follicles, representing thin skin.

Structures associated with hair follicle

Hair bulb and hair.

Gland associated with hair follicles

Sebaceous gland.

Skin type associated with hair

Thin skin.

Skin type associated with palms and soles

Thick skin.

Epidermal layer thickness in thick skin

Thicker layers.

Key visual clue for identifying papillary layer

Forms hill-like projections at the surface of the dermis.

Key visual clue for identifying reticular layer

The dermal region below the papillary 'hills.'

Hypodermis connective tissue noted

Adipose.

Major differences between two skin preparations

Human sole: thick skin, no hair, thicker layers, stratum lucidum. Hair follicles: thin skin, hair/hair follicles, and no stratum lucidum.