Integumentary System

What is 1?

Epidermis

What is 4?

Dermis

What is 5?

Subcutaneous layer or Hypodermis

What is 6?

Hair shaft

What is 7?

Sebaceous gland

What is 8?

Arrector pili muscle

What is 9?

Nerve fibers

What is 10?

Sweat Gland

What is 11?

Pore of Sweat Gland Duct

What is 12?

Epidermal Ridge

What is 13?

Dermal Papilla

What is 14?

Sweat gland duct

What is 15?

Touch and pressure receptors

What is 16?

Hair Follicle

What is 17

Artery

What is 18

Vein

What is 20

Fat or adipose

The two major components of the integumentary system are

The cutaneous membrane or skin composed of epithelium and accessory structures

What are the five major functions of the integumentary system

Provide protection, regulates the temperature , synthesizes and stores nutrients, sensory reception, and excretes and secretes glands

Epidermis

Is the first layer of the skin and consists of stratified squamous epithelium. Contains 5 to 4 layers

Stratum Germinativum/ Stratum Basale

This layer is connected to the basement membrane which seperates the epidermis from the loose connective tissue of adjacent dermis

What is the function of the stratum germinativum

Forms epidermal ridges/fingerprints, contains melanocytes and is a layer where new cells are generated and begin to grow

Stratum spinosum

Layer where cells continue to divide and add to the thickness of the epithelium

Stratum granulosum

Consists of cells displaces from the stratum spinosum. Produces keratin and coats ksing and structures of hair

Stratum lucidum

Covers the stratum granulosum, the cells in this layer are flattened and densely packed and filled with keratin

Stratum Corneum

The layer that is on the surface of the epidermis consists of later of dead epithelial cells that are keratinized. The dead cells are connected by desmosomes

What are the two layers of the dermis

The papillary later and reticular layer

Papillary Layer

Consists of loose connective tissue that supports and nourishes the epidermis. Contains capillaries and nerves

Reticular layer

Consists of irregular connective tissue consisting of both elastic and collagen fibers.

How are hairs produced

They are produced by hair follicles

Sebaceous Glands

These are oil glands and produce large quantities of lipids as they mature

Sebum

Secreted from the sebaceous gland lubricating the hair and skin and inhibits the growth of bacteria

Apocrine Sweat Glands

Concentrated in areas like armpits, odorless sweat into hair follicles

Merocrine Sweat Glands

Releasing water sweat to cool the body

What are the function of nails?

Protect the exposed tips of fingers or toes. Covers an area of the epidermis (nail bed)