Name
1
Date
Reinforcement
Class
The Digestive System
Directions: Listed below are organs that aid in the digestion of food. Describe the function of each organ and
label the figure.
1. mouth:
Meeting Individual Needs
2. esophagus:
3. stomach:
4. small intestine:
5. pancreas:
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
6. large intestine:
7. liver:
8. rectum:
9.
13.
10.
14.
11.
15.
16.
12.
17.
Digestion, Respiration, and Excretion 27
Name
3
Date
Reinforcement
Class
The Respiratory System
Directions: Label the parts of the respiratory system shown in the diagram below.
1.
3.
7.
4.
5.
6.
Directions: In the space provided below, write the name of the structure indicated.
8. warms and moistens air; filters dust particles
9. tube that transports air to the bronchi
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
10. prevents food from entering the trachea
11. oxygen passes into the capillaries that surround these sacs
12. organ made up of masses of alveoli
13. a sheet of muscle across the bottom of the chest cavity
14. a division of the trachea
Directions: Label each statement below as a description of either inhalation or exhalation. Write the word
inhale or exhale in the space provided below.
15. The diaphragm contracts.
16. Air pressure in the chest cavity increases.
17. The gases inside the lungs are pushed out through air passages.
18. Air pressure in the chest cavity decreases.
19. The volume of the chest cavity increases.
Digestion, Respiration, and Excretion 29
Meeting Individual Needs
2.
Name
4
Date
Reinforcement
Class
The Excretory System
Directions: Answer the following questions on the lines provided.
1. What functions does the urinary system perform?
2. What are three of the excretory organs of the body?
4. Why is skin considered an excretory organ?
5. Why do you see your breath on a cold day?
6. Number the following events to place them
in the correct order.
______ g. The renal vein returns purified
blood to be circulated.
______ a. Urine flows from ureters to the
bladder.
______ h. Urine flows from the bladder
through the urethra and out of
the body.
7. Label the parts of the urinary system
shown in the diagram below using the
following terms: urethra, ureter, bladder,
kidney, aorta, renal vein. (Arrows show the
direction of blood flow.)
______ b. Blood enters the nephrons.
______ c. Blood enters the kidneys
through the renal artery.
______ d. Urine drains from each
collecting tubule into funnelshaped areas of the kidney.
______ e. Capillaries reabsorb
most of the water,
sugar, and salt.
a.
______ f. Water, sugar, salt,
and wastes in
the blood enter
a cuplike structure.
c.
b.
d.
e.
f.
30 Digestion, Respiration, and Excretion
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
Meeting Individual Needs
3. What happens when the kidneys don’t work?