Worksheets24 Hours: Your Food on the Move
Total questions: 22
Worksheet time: 12mins
Which of the body systems is this article about?
Cardiovascular
Digestive
Respiratory
Lymphatic (immune)
According to the article, where does digestion begin?
Brain
Mouth
Stomach
Small Intestine
The first step in digestion is ______.
Producing saliva before you even eat
Chewing food to break it in to smaller pieces
Chemical digestion to break polymers into smaller pieces
Absorption of nutrients through the small intestine
The digestive system stretches from mouth to anus. How long is that?
3 feet, approximately the length of your arm
30 ft, approximately the length of the classroom
300 ft, length of the football field
How long after you swallow does the food reach the stomach?
20 seconds
4 hours
16 hours
24 hours
How long after you swallow does the food reach the small intestines?
20 seconds
4 hours
16 hours
24 hours
How long after you swallow does the food reach the colon (large intestine)?
20 seconds
4 hours
16 hours
24 hours
How long after you swallow does the waste material reach the rectum to be excreted as feces (poop!)?
20 seconds
4 hours
16 hours
24 hours
Which is NOT one of the four parts to digestion?
Ingestion
Digestion
Absorption
Protection
Ingestion occurs when
food is placed in the mouth.
food is broken down.
nutrients are absorbed into the blood for transport to the rest of the body.
waste materials are excreted.
Elimination occurs when
food is placed in the mouth.
food is broken down.
nutrients are absorbed into the blood for transport to the rest of the body.
waste materials are excreted.
Digestion occurs when
food is placed in the mouth.
food is broken down.
nutrients are absorbed into the blood for transport to the rest of the body.
waste materials are excreted.
Absorption occurs when
food is placed in the mouth.
food is broken down.
nutrients are absorbed into the blood for transport to the rest of the body.
waste materials are excreted.
Saliva is formed in a gland at the back of the mouth. The major component of saliva is
food.
digestive enzymes.
water.
mucus.
Enzymes work as catalysts, making chemical reactions happen faster. What type of molecule are most enzymes?
Lipid
Carbohydrate
Protein
Nucleic acid
Enzymes work as catalysts, making chemical reactions happen faster. Carbonic anhydrase catalyzed the conversion of carbon dioxide into bicarbonate ions for transport in the blood stream. How many bicarbonate ions are produced every second with this enzyme?
600
6,000
60,000
600,000
Digestion kicks in once the food reaches the stomach. The stomach contains powerful muscles that churn food continuously. What type of muscles are these?
skeletal
cardiac
striated
smooth
Which part of the digestive system is designed for absorption of nutrients into the blood stream?
esophagus
stomach
small intestine
large intestine
The job of the liver is to remove toxins (poisons) from the blood before the nutrients are transported to the rest of the body. Where is the liver located?
anterior to the large intestine
posterior to the esophagus
lateral to the stomach
all answers are correct
Once you have swallowed your food the rest of the digestive process is
voluntary.
involuntary.
Two other organs are important in digestion. The gall bladder produces bile that helps digest fats. The pancreas produces insulin, which is important for maintaining constant levels of glucose in the blood. The pancreas and gall bladder are located:
distal to the esophagus
inferior to the small intestine
proximal to the stomach
inferior to the liver
