A/P Integumentary System

Epidermis- Thick skin 5 Layers

Stratum- corneum, lucidum, granulosum, spinosum, basale

Epidermis- Thin skin- 4 Layers

Usually hairy skin, all but palms and soles. Stratum- corneum, granulosum, spinosum, basale (no lucidum)

Epidermis

Superficial layer of epithelial tissue

Dermis

Deep layer of connective tissue

Subcutaneous tissue

Not part of skin, loose connective tissue that connects skin to underlying structures

What are the 5 types of cells in the epidermis?

Keratinocytes, Melanocytes, Langerhans(dendritic)cells, Merkel(tactile) cells, stem cells

Structures that are apart of the integument

Skin, hair, nails, glands

What are the functions of the integumentary system

Protection, sensation, tempature regulation, vitamin D production, excretion

Cyanosis

Blue color caused by decrease iin blood oxygen content

What are the two layers of the dermis

Papillary and Reticular

What are the types of sweat (sudoriferous) glands

Eccrine (merocrine), Apocrine, Modified apocrine glands- Ceruminous and mammary

Integumentary system

Consist of the skin and its accessory organs- hair, nails, cutaneous glands

What is the most vulnerable organ and why?

Skin- radiation, trauma, infection, injurious chemicals

Dermatology

Scientific study and medical treatment of the integumentary system

Name the different parts of the hair model

Which type of epithelial cell type is flattened and scale like

Squamous

What is an example of a cell that is part of the integumentary system’s defense against invading pathogens?

Langerhans cell

Shape of cells (Epithelium)

Squamous, Cuboidal, Columnar

Squamous

Flat, scale-like, like squashed

Cuboidal

About equal in height and width, like cube

Columnar

Taller than wide, like column

Number of cell layers (epithelium)

Simple, Stratified, Psudostratified

Hypodermis

Subcutaneous layer, deepest layer of the integumentary system