COMPARATIVE ANATOMY

LET’S REVIEW

• 3 KEY CONCEPTS:– STRUCTURE AND FUNCTION– DIFFUSION– SURFACE AREA

STRUCTURE AND FUNCTIONWHAT DOES THE STRUCTURE OF AN

OBJECT HAVE TO DO WITH ITS FUNCTION?

VELCRO

COCKLEBUR

DIFFUSIONWHAT BODY SYSTEMS USE

DIFFUSION IN ORDER TO FUNCTION PROPERLY?

SURFACE AREAEXPLAIN THE RELATIONSHIP BETWEEN

THE VILLI AND THE TERRY CLOTH

VILLI

TERRY CLOTH

SURFACE AREA, DIFFUSION AND STRUCTURE AND

FUNCTIONHOW DO ALL THREE OF THESE

CONCEPTS HELP THE VILLI FUNCTION?

DIGESTIVE

Mammal

Annelid

Cnidarian

Arthropod

RESPIRATORY

Gills

Crayfish

Spider Book lung

Alveoli

Mammal

CIRCULATORY

Mammal

Insect

Open

Annelid

Closed

EXCRETORY

Mammal

Annelid

Arthropod

NERVOUS

Human Brain

Nerve cord

Cnidarian

Arthropod

Annelid

SKELETAL Endoskeleton

Exoskeleton