I. Label each of the lettered areas of the Digestive System on the diagram.

pic of digestive system

A. ____________________                               B. ____________________           

C. ____________________                               D. ____________________

E. ____________________                               F. ____________________

G. ____________________                               H. ____________________

I. _____________________                              J. _____________________

K. ____________________

II. Fill In

A series of involuntary muscular contractions along the digestive tract is known as __________________________.

 

A soft, flattened gland called the _________________ lies beneath the stomach and secretes both digestive enzymes and hormones.

 

Where is the hunger center in the brain? ___________________________

 

What signals someone to stop eating? _____________________________________

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III. I. Label the following structures on the diagram: nasal cavity, epiglottis, larynx, trachea, lung, bronchioles, and alveoli.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

What prevents food and other substances from getting into the air passages when you swallow?

__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

How is air forced out of the lungs? __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

______________________________________________________________________________

How is breathing controlled? _______________________________________________

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How does the exchange of carbon dioxide for oxygen take place in the lungs? ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________