systems in animals. main idea different body systems help animals carry out basic life functions....
TRANSCRIPT
Systems in Animals
Main Idea
Different body systems help animals carry out basic life functions.
Skeletal system Muscular system Nervous system Respiratory system Circulatory system Excretory system Digestive system
What is a system?
A system is a group of parts, people, things that work together.
Example: The school system. How does it work?
For what we will be talking about is a system of body parts in an organism.
Can you name a system in your body? Can you name a system that has nothing to do
with science.?
Chapter Overview
Animals have different organ systems. By the end of this chapter you will be able
to answer these questions:How do animals move and sense
changes? (Hint: 3 systems)How do air and blood travel in the body?
(Hint: 3 systems)How food is broken down?(Hint: 1 system)
How do animals move and sense changes?
Through these three systems:The Skeletal system /bonesMuscular System /musclesNervous System /nerves
Animals use skeletal and muscular systems to move. The nervous system can sense and respond to changes.
How do air and blood travel in the body?
Through these three systems: The Respiratory System / oxygen, lungs, breathing The Circulatory System / heart, blood, going through
your body The Excretory System / removes waste, throws out
the trash
The circulatory and respiratory systems transports or moves blood and oxygen. The excretory system removes waste or throws out bad stuff for your body.
How is food broken down?
Through this system:The Digestive System / food goes in, body takes the good stuff
from the food, food goes out.
The digestive system breaks down food so animals can get the energy they need.
The Skeletal System
Bones made of living tissueSupports body (Helps you stand)Protects soft body organs (like a shield)
The Skeletal System
The Muscular System
The Muscular System
Made of strong tissue called muscles.Vertebrates move when muscles shorten
and pull on bones. Invertebrates move by tensing muscles
and relaxing.
Nervous System
Made of nerve cellsThe nerve cells join together to become
nervesControls all the body systemsSystem has brain, nerves, spine
Nervous System
Respiratory System
Respiratory System
Brings oxygen to the blood and removes waste gas.
Small invertebrates do not have this! (ex: Worms)
Lungs, gills
Circulatory System
Move blood around bodyCarries oxygen, water, and food to blood
cells. Heart, blood vessels, and blood
Heart is made up of strong muscle tissue.
Fish has 2 chambers in their heartAmphibians 3 chambers in their heartMammals 4 chambers in our hearts.
Circulatory System
Excretory System
Removes waste/ throw out trashLiver, kidney, bladder, skin, lungs
a. Liver and kidney filter waste from the blood b. Skin sweats excess (too much) minerals c. lungs, gills remove waste gas
Excretory System
Digestive System
Breaks down food Animals digest food in different ways
a. Sponge turns food into tiny pieces (small particles)
b. Simple invertebrates eat food and throws out waste from the same opening.
c. Segmented worms eat in one hole and comes out of the tail. (2 openings)
Digestive System
d. Reptile, amphibian have a more complex digestive system.
e. Mammals also have a complex digestive system that breaks down food for the blood to take.
Digestive System