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1stQ SCIENCE - Answer Key-ADMU-Gr4

The document describes the key parts and functions of the digestive system. It identifies the stomach (A), small intestines (C), large intestines (D), liver (E), and rectum (F) as main parts. Most digestion occurs in the small intestines through enzymes that break down food into nutrients, which are then absorbed and circulated through the body. The large intestines absorb water from undigested food before waste is stored and passed through the rectum.

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746 views4 pages

1stQ SCIENCE - Answer Key-ADMU-Gr4

The document describes the key parts and functions of the digestive system. It identifies the stomach (A), small intestines (C), large intestines (D), liver (E), and rectum (F) as main parts. Most digestion occurs in the small intestines through enzymes that break down food into nutrients, which are then absorbed and circulated through the body. The large intestines absorb water from undigested food before waste is stored and passed through the rectum.

Uploaded by

flower.power11233986
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
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1

DIGESTIVE SYSTEM

A. PARTS AND FUNCTIONS/ DIGESTION PROCESS

DIRECTIONS. Look at the illustration below. Write the name of the organs with
letters A, C, D, E, and F
A - ___________
C - ___________
D - ___________
E - ___________
F - ___________

DIRECTIONS: Write T if the sentence is true and F if it is not.

(For #1-8, look at the illustration above.)


___T___ 1. A contains the liquid that softens food and makes it
easy to swallow.

___F___ 2. E sends nutrients to the rest of the body.

___T___ 3. Most digestion occurs in C.


2

___T___ 4. E stores undigested food.

___T___ 5. B moves the food down the stomach through the


peristalsis.

___F___ 6. Digestive enzymes are found in A only.

___T___ 7. Peristalsis happens in B and C.

___F___ 8. Digestion happens in A to E.

___T___ 9. Chemicals called enzymes cause most of the


changes of digestion.

___T___ 10. Muscular contraction in the esophagus is called


peristalsis.

___F___ 11. The whole lining of the small intestine is covered by


enzymes.

___T___ 12. The undigested parts of food move from the small intestine
to the large intestine.

___T___ 13. Saliva breaks starches in food to sugars.

___T___ 14. Blood carries the nutrients from the small intestines to the
rest of the body.

___F___ 15. The rectum is the final passage way of waste.

DIRECTIONS: Write

A if the phrase describes A only,


B if the phrase describes B only,
C if the phrase describes A and B,
D if the phrase describes neither.

A. small intestines
B. large intestines

___A___ 1. digests food


3

___A___ 2. absorbs nutrients from food

___A___ 3. has villi

___D___ 4. has peristalsis

__B____ 5. where waste is stored

__D____ 6. where food is cut into little pieces

__A____ 7. secretes enzymes that break down food

__D____ 8. where digestion starts

__B____ 9. absorbs water from undigested food

__C____ 10. part of the digestive system

Multiple Choice: Write the letter of the correct answer:

__C____ 1. Which one causes most of the changes in digestion?

A. stomach
B. liver
C. enzyme
D. large intestine

__A____ 2. Where does digestion take place?

mouth
esophagus
stomach
large intestine

A. I and III
B. II and III
C. I, III and IV
D. All of the above

__B____ 3. What if found in the lining of the small intestines?

A. enzymes
B. villi
4

C. blood vessels
D. all of the above

__D____ 4. The __________ in the mouth mixes with food and makes it
easier to swallow.

A. water
B. enzymes
C. peristalsis
D. saliva

__C____ 5. Changing of food into a form that the body cells can use is
called ___________.

A. constipation
B. circulation
C. digestion
D. respiration

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