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Digestive System


What is the digestive system?

The body's breathing system

The body's system of nerves

The body's food-processing system

The body's blood-transporting system


Digestion begins in the mouth. Which of the following statement is INCORRECT?

The tongue aids in the digestion of the food.

The saliva changes some of the starches in the food to sugar.

The tongue keeps the food in place in the mouth
while the food is being chewed.


The digestive juices can react more easily with the food when chewed.

Where does food pass through between the mouth and the stomach?

The gullet

The rectum

The small intestine

The large intestine


Our throat divides into two separate tubes: the windpipe and the gullet. What prevents food from entering the windpipe?

The uvula

The tongue

The trachea

The epiglottis


What happens when food reaches the stomach?

Nothing. No digestion occurs in the stomach.

The food moves quickly into the small intestine.

Juices mix with the food and stomach muscles squeeze it.

The food is completely digested and is absorbed
by tiny blood vessels in the walls of the stomach.


Where does the partly-digested food (in liquid form) go after it leaves the stomach?

The gullet

The appendix

The small intestine

The large intestine


How does digested food finally reach the bloodstream?

It passes through the gullet into the blood.

It is absorbed into the blood through blood vessels.

It is absorbed into the blood through the walls of the lungs.

It passes from the small intestine into the large
intestine, then into the blood.


The digestive system processes food into usable and unusable materials. The usable materials are sent to the body's cells as food. What happens to unusable materials?

It goes into the pancreas to await disposal.

It goes to the right ventricle to await disposal.

It goes into the large intestine to await disposal.

It goes into the small intestine to await disposal.


Solid waste leaves the body through the rectum then the anus. Liquid waste leaves the body after passing through the ...

kidneys and bladder

blood vessels and lungs

large intestine and bowel

small intestine and large intestine


Digestion takes place in a long tube-like canal called the alimentary canal, or the digestive tract. Food travels through these organs in the following order:

Mouth, gullet, stomach, small intestine,
large intestine and rectum


Mouth, oesophagus, stomach, large intestine,
small intestine and rectum


Mouth, stomach, oesophagus, small intestine,
large intestine and rectum


Mouth, stomach, gullet, small intestine,
large intestine and rectum


Which of the following does NOT manufacture digestive juices?

Liver

Kidneys

Stomach

Pancreas


The liver is located in the abdomen and performs many functions. Which of the following is NOT a function of the liver?

Storing food

Manufacturing insulin

Producing digestive juices

Healing itself when it is damaged



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