Skeletal System
Muscular System
Digestive System
Circulatory System
Respiratory System
100
What are three major functions of the skeletal system?
Structure and support, Attach to muscles for movement, Protect vital organs, Produce blood cells in marrow, Store minerals
100
What are three major functions of the muscular system?
Voluntary movement, Posture, Heartbeat, Produce body heat, Blood Flow, Digestion
100
What is the major function of the digestive system?
To break down food particles into simple molecules to be absorbed by the body
100
What is the major function of the circulatory system?
Transport blood that contains: oxygen, nutrients and waste; Distribute body heat; Immunity; Hormones
100
What is the major function of the respiratory system?
Take in oxygen and expel carbon dioxide and water vapor
200
What bones protect the heart, lungs and kidneys?
The ribcage
200
Name the three types of muscle tissue
Skeletal; Cardiac; Smooth
200
What substance breaks down food chemically in the mouth?
Saliva has enzymes that break down the molecules of food
200
What are the major structures of the circulatory system? (Name 4)
Heart; arteries; veins; capillaries
200
What is another name for the windpipe?
Trachea
300
What bones protect your spinal cord?
The vertebral column (vertebrae)
300
What muscle controls the lungs so you can breathe?
The diaphragm
300
What is the function of the small intestine?
To absorb nutrients and send them into the blood stream
300
What is transported in arteries?
Blood that is rich in oxygen coming away from the heart to be delivered to the cells of the body
300
What are the major organs of the respiratory system? (Name at least 3)
Trachea, bronchi, lungs, bronchioles, alveoli
400
What kind of tissue connects bone to muscle?
Tendons
400
How does the muscular system help out the digestive system?
Smooth muscle allows organs to contract to push food through the esophagus, stomach and intestines
400
What is the main function of the large intestine?
To absorb excess water from undigested food
400
How does the circulatory system work with the excretory system? Think about how urine is made!
Kidneys filter blood to remove waste and eliminate it out of the body in urine
400
How does the respiratory system work with the circulatory system?
Blood carries oxygen and carbon dioxide to and from the lungs
500
How does the skeletal system help out the circulatory system?
Bones produce blood cells and the rib cage protects the heart
500
How does the muscular system help the circulatory system?
The heart is a muscle made of cardiac tissue Blood vessels are lined with smooth muscle to push blood through
500
What is the function of the liver?
To produce bile (substance that breaks down fats in food); To detoxify blood
500
How does the circulatory system work with the digestive system?
The blood carries nutrients absorbed from digested food
500

What do breathing with lungs and cellular respiration in the mitochondria have in common?

Both involve the exchange of gases, specifically oxygen and carbon dioxide.
Breathing is a process that happens at the level of the whole organism—it brings oxygen into the lungs (inhalation) and removes carbon dioxide from the body (exhalation).
Cellular respiration, on the other hand, takes place inside the mitochondria of individual cells. In this process, cells use oxygen to break down glucose and produce energy in the form of ATP. This also creates carbon dioxide and water as waste products.

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