Animal structures and functions

STUDY
PLAY
Structural adaptation
Adjustments to internal or external body parts.
Internal structure
structures that are found inside of an organism's body.
respiratory system
the organ system that brings oxygen to body cells and removes waste gas.
external structures
structures that are found outside of an organism's body.
skeletal system
The frame that protects and supports body organs and provides a framework the muscles use to support movement. Made up of bones and joints.
adaptation
a trait that helps an organism survive in its environment.
exoskeleton
a hard skeleton on the outside of an arthropod's body.
invertebrate
An animal without a backbone.
vertebrate
An animal with a backbone.
Arthropods
Invertebrates that have an exoskeleton, body segments, jointed limbs, and bilateral body symmetry. The largest animal group on earth. Examples: spiders, crabs, and insects.
Mammals
Warm-blooded vertebrates that have hair and produce milk for their young.
Reptiles
Cold-blooded vertebrates, with scales cover part of all of their body and lungs rather than gills for breathing. They lay eggs to reproduce.
Birds
Warm-blooded vertebrates with feathers covering their bodies and scales covering their legs. They lay eggs to reproduce.
Amphibians
Cold-blooded vertebrates, such as frogs, that take in oxygen with their lungs and through their skin.
Fish
a cold-blooded animal that lives in water, breathes with gills, and usually has fins and scales.
YOU MIGHT ALSO LIKE...

Flickr Creative Commons Images

Some images used in this set are licensed under the Creative Commons through Flickr.com.
Click to see the original works with their full license.