Integumentary, Circulatory, Immune

Major functions of the skin

Primary defense mechanism against

Plays a role in sensation perception, and helps to regulate body temperature foreign outside invaders 

Three layers of the skin 

Epidermis, Dermis, Subcutis 

Function of the epidermis

Function of the Dermis

Function of the subcutis- what’s another name for it?

Hypodermis

Differences in papillary and reticular layers of the Dermis

Order of layers of the Epidermis (surface to dermis)

1. Stratum basale (basal layer)

2. Stratum spinosum (prickle cell layer)

3. Stratum granulosum (granular layer)

4. Stratum lucidum (clear layer)

5. Stratum corneum (Keratin layer)

Function of the Stratum basale

Function of the stratum spinosum

Function of the stratum granulosum

Function of the stratum lucidum

Function of the stratum corneum

Thin vs Thick skin tissue

Largest organ in the body

Skin

Two systems within the circulatory system

cardiovascular and lymphatic vascular system

Cardiovascular is made up of what? What’s it responsible for?

Heart, blood vessels (arteries, arterioles, capillaries, venules and veins), and blood

transporting oxygen, nutrients, hormones and wastes throughout the body

Lymphatic vascular system is made up of what? What’s it responsible for?

lymph capillaries and vessels that drain extracellular fluid (lymph) from the tissues

What is the immune system

a collection of organs and aggregates of lymphoid tissue that work to prevent disease as part of the immune system

Lymphoid organs (4)

• Lymph nodes

• Spleen

• Thymus

• Tonsils

What is the most common site for microbial invasion?

The mucosa

What protects mucosal surfaces from microbial invasion?

MALT- small aggregates of lymphoid tissue called mucosa-associated lymphoid tissue

Where can MALT be found?

the gastrointestinal tract (e.g. peyer's patches), respiratory system, genitourinary system, and integumentary system

AND Bone marrow- makes lymphocytes

Define pilosebaceous apparatus