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Human Body Systems
Unit A Chapter 4
30
Science
4th Grade
04/02/2012

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Term
Cells of the same type that work together are called...
Definition
tissue
Term
Different tissues that work together are ...
Definition
organs
Term
Organs that work together are ...
Definition
systems
Term
How do skeletal muscles move your body?
Definition
Skeletal muscles can only pull, they can not push.  They have to move in pairs to move back and forth.  Skeletal muscles contract and relax to help you move.
Term
Name the body's three types of muscles.
Definition

cardiac muscles

smooth muscles

stiated muscles

Term
--- muscles are skeletal muscles with light and dark stripes
Definition
striated muscles
Term
--- muscles are found in the walls of the stomach
Definition
Smooth
Term
--- muscles work automatically without stopping or resting.
Definition
Cardiac
Term
Cardiac muscles are found in the walls of a ---.
Definition
heart
Term
Bones meet at ---.
Definition
joints
Term
Name two jobs of the skeletal system.
Definition

1.  supports the body

2.  protects the organs

Term
The main function of the respiratory system is to ---.
Definition
get oxygen to all cells
Term
Your body's cells need --- to work.
Definition
oxygen
Term
The main organ of the respiratory system are the ---.
Definition
lungs
Term
The --- system's job is to take the blood to all of your body's cells.
Definition
Circulatory
Term
a tube of nerves that runs through the backbone
Definition
spinal cord
Term
blood vessels that return blood to the heart
Definition
veins
Term
a nerve cell
Definition
neuron
Term
Vessels that carry blood from the heart are called ...
Definition
arteries
Term
Tiny blood vessels that surround air sacs are  ...
Definition
capillaries
Term
--- are groups of neurons that pass along information.
Definition
nerves
Term
Which system provides nutrients to all parts of your body's systems.
Definition
digestive system
Term
Where and how does digestion begin?
Definition
Digestion starts in the mouth with the help of your teeth, tongue and saliva.
Term
--- is a tube that connects your mouth with your stomach.
Definition
esophagus
Term
--- is a bag made up of smooth muscles which digests and churns food.
Definition
stomach
Term
--- is a long tube of muscles where most digestion is done.
Definition
small intestines
Term
The --- --- is the last part of the digestive system.
Definition
large intestines
Term
The --- is the control center of your nervous system.
Definition
brain
Term
The --- system sends and receives messages.
Definition
nervous
Term
Why is regular exercise especially good for the circulatory system?
Definition
Regular exercise strengthens the heart and lungs by making them work harder, which increases the amount of oxygen in the body.
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