External Structures
What are external structures?
Parts on the outside of an animal’s body
What body parts help animals move? (Name 3 for all animals)
Legs, wings, fins
What are internal structures?
Parts inside of the body
Which system helps you breathe?
Respiratory system
What are receptors?
Structures that send information to the brain
Name one external structure animals use to eat.
Beak, teeth, tongue, or jaws
What external structure helps fish move through water?
Fins
What organ pumps blood through the body?
The heart
Which system moves blood through the body?
Circulatory system
Which sense uses taste buds?
Taste
What external structure helps birds stay warm and fly?
Feathers
What covering protects animals like turtles?
A hard shell
What organ helps animals/humans breathe oxygen? (2 things)
Lungs or gills
How do the lungs and heart work together?
Lungs get oxygen; heart moves it through the body
What sense helps you hear sounds?
Hearing
Why do geckos have special feet?
To climb smooth surfaces
How do scales help snakes move?
They help grip and push against surfaces
What is one example of an organ system in animals?
Respiratory, circulatory, or digestive system
Why do animals & humans need different body systems to work together?
One system cannot do everything alone
What is a reflex?
A fast response that does not use the brain
How do external structures help animals survive? (4 things)
They help animals eat, move, stay safe, and live in their environment
Why wouldn’t a frog’s skin work well in the Arctic?
It is not adapted for cold environments
Why are internal structures important? (3 things)
They help animals breathe, digest food, and survive
Why do birds have air sacs?
To help them breathe better while flying
How do bats and dolphins “see” in the dark?
Echolocation