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Fifth Grade (Grade 5) Respiration, Digestion, and Excretion Questions

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Grade 5 Respiration, Digestion, and Excretion
To eat is to
  1. respond.
  2. ingest.
  3. reproduce.
  4. diffuse.
Grade 5 Respiration, Digestion, and Excretion
The main job of your lungs is to bring carbon dioxide into your body when you inhale and let out oxygen when you exhale.
  1. True
  2. False
Grade 5 Respiration, Digestion, and Excretion
How many kidneys do humans have?
  1. one
  2. two
  3. more than 600
Grade 5 Respiration, Digestion, and Excretion
The air breathed through your mouth is filtered before entering your body.
  1. True
  2. False
Grade 5 Respiration, Digestion, and Excretion
The increasingly smaller airways branching off into the lungs are the
  1. air sacs.
  2. bronchial tubes.
  3. capillaries.
  4. alveoli.
Grade 5 Respiration, Digestion, and Excretion
Which statement about oxygen is true?
  1. Your lungs can store several hours worth of oxygen.
  2. Your body cannot store oxygen at all.
  3. Your body stores oxygen in your bloodstream.
  4. Your body can function without oxygen at night.
Grade 5 Respiration, Digestion, and Excretion
The hair inside your nose catches tiny dust particles when you breathe in.
  1. True
  2. False
Grade 5 Respiration, Digestion, and Excretion
The walls of the alveoli and capillaries are permeable. Permeable means that
  1. substances can pass through them.
  2. they are made of muscle.
  3. they are located throughout the body.
  4. they are made of bone.
Grade 5 Respiration, Digestion, and Excretion
Food enters the large intestine as it leaves the small intestine.
  1. True
  2. False
Grade 5 Respiration, Digestion, and Excretion
Which statement about kidneys is NOT true?
  1. They are filters for the body.
  2. They store liquid waste.
  3. They separate liquid waste from blood.
  4. They keep the blood clean.
Grade 5 Respiration, Digestion, and Excretion
Which type of digestive system is characterized by a four-chambered stomach?
  1. ruminant
  2. non-ruminant
Grade 5 Respiration, Digestion, and Excretion
The human respiratory system that is composed of different organs that help humans breathe.
  1. True
  2. False
Grade 5 Respiration, Digestion, and Excretion
How much liquid can the bladder hold?
  1. 5 cups
  2. 16 ounces
  3. 2 pints
  4. 1 quart
Grade 5 Respiration, Digestion, and Excretion
I am the organ that contains enzymes and gastric juices that break down the food.

Who am I?           stomach          
Grade 5 Respiration, Digestion, and Excretion
This is where most of the digestion takes place. Here, nutrients are absorbed through my walls.

Who am I?                  small intestine                  
Grade 5 Respiration, Digestion, and Excretion
Swallowed food enters this long tube that leads from the mouth to the stomach. Muscles here squeeze to push the food through.

Who am I?             esophagus            
Grade 5 Respiration, Digestion, and Excretion
On an average, how many times does a person inhale and exhale per day?
  1. 20
  2. 200
  3. 2,000
  4. 20,000
  5. 200,000
Grade 5 Respiration, Digestion, and Excretion
The             digestive            system is a system which includes mouth, esophagus, stomach, small intestine and large intestine.
Grade 5 Respiration, Digestion, and Excretion
What gas allows us all to breathe?
Grade 5 Respiration, Digestion, and Excretion
The system that removes wastes from the body.
  1. muscular
  2. nervous
  3. excretory
  4. skeletal
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