Human Anatomy & Physiology
Unit 2: Tissue & Integumentary System
Review Sheet
Tissues:
¤ Realate
tissues to the levels of organization in the body
¤
What are the 4 Tissue type?
o
characteristics of each?
o
examples
o
structure & function
¤ Focus
on epithelium...
o
What is the function? Where
is it found?
o
How would you classify the different
types? How does the layer/shape relate to its role in the body?
o
Identification -- see your quiz
for things to be able to label.
¤
Describe the effects of aging
on the 4 types of tissues
Integumentary System:
What parts make up the Integumentary System?
What are all the functions of the Integumentary
System? Can you explain HOW each function is accomplished?
¤
Protection
o
Water loss ˆ Keratinocytes
o
Invasion
o
UV light ˆ Melanocytes
¤
Metabolism
o
Vitamin D, dehydrocholesterol,
calcium, rickets
¤
Thermoregulation: radiation
& evaporation
o
Anterior hypothalamus
o
Vasoconstriction vs. vasodilation
o Sweat- responses to various stimuli
o
Shivering
o
Goose bumps
o
Frostbite
¤
Sensation
o
Free vs. encapsulated nerve
endings
o
4 basic kinds of sensors
o
distribution
¤
Excretion and absorption
What are the layers of the Skin? What is each
layer made of? What roles does each layer have? How are these functions accomplished?
¤
Epidermis
o
Stratified squamous
o
No blood vessels
o Cells: keratinocytes & melanocytes (pigmentation, freckles, albino, etc)
o
All 5 layers
¤
Dermis
o
Fibroblasts ˆ collagen & elastin
o
Vasculated -- explain 2 roles
of blood vessels?
o
Nerve fibers -- can you describe
where the concentration of nerves are and why they are there?
o
Hair follicles
¤
Root
¤
Shaft
¤
Melanocytes
¤
Arrector pili - what are goosebumps?
o
Sebaceous glands
¤
What is sebum?
¤
What role do androgens &
estrogen have?
o
Sweat glands
¤
Hypodermis (Subcutaneous)
o
Addipose tissue