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Respiration, Digestion, and Excretion Questions - All Grades

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Grade 7 Respiration, Digestion, and Excretion
Which body system is shown in the diagram?
Respiratory System
  1. nervous
  2. endocrine
  3. circulatory
  4. respiratory
Grade 4 Respiration, Digestion, and Excretion
What does your body need that it gets from air?
  1. carbon dioxide
  2. oxygen
  3. nitrogen
Grade 7 Respiration, Digestion, and Excretion
Which series indicates the correct order through the digestive system?
  1. mouth-stomach-esophagus-small intestine-large intestine
  2. mouth-esophagus-stomach-large intestine-small intestine
  3. mouth-small intestine-stomach-large intestine-esophagus
  4. mouth-esophagus-stomach-small intestine-large intestine
Grade 5 Respiration, Digestion, and Excretion
Oxygen enters the body through the                 system.
  1. respiratory
  2. excretory
  3. digestive
  4. circulatory
Grade 7 Respiration, Digestion, and Excretion
What is the function of the digestive system?
  1. digestion and absorption
  2. supplying oxygen
  3. circulating blood
  4. moving the body
Grade 7 Respiration, Digestion, and Excretion
What muscular tube connects the mouth to the stomach?
  1. esophagus
  2. duodenum
  3. digestive tract
  4. trachea
Grade 4 Respiration, Digestion, and Excretion
This substance, also known as "spit," is in your mouth to help break up food.
  1. medicine
  2. salt
  3. taste buds
  4. saliva
Grade 8 Respiration, Digestion, and Excretion
Which system includes the stomach?
  1. circulatory system
  2. reproductive system
  3. digestive system
  4. urinary system
Grade 4 Respiration, Digestion, and Excretion
Which part of the digestive system makes food mostly liquid?
  1. stomach
  2. esophagus
  3. small intestine
  4. large intestine
Grade 5 Respiration, Digestion, and Excretion
Which body part is not directly related to the digestive system?
  1. lungs
  2. stomach
  3. esophagus
  4. large intestine
Grade 7 Respiration, Digestion, and Excretion
The respiratory system supplies the body with
  1. oxygen.
  2. carbon dioxide.
  3. air.
  4. trachea.
Grade 7 Respiration, Digestion, and Excretion
Where does the digestive system start?
  1. stomach
  2. mouth
  3. intestines
  4. esophagus
Grade 3 Respiration, Digestion, and Excretion
The                 are the organs that help us breathe in air.
  1. kidneys
  2. lungs
  3. intestines
Grade 5 Respiration, Digestion, and Excretion
What system are the lungs, kidneys, and skin part of?
  1. digestive
  2. respiratory
  3. circulatory
  4. excretory
Grade 5 Respiration, Digestion, and Excretion
What system breaks down sugars and proteins?
  1. digestive system
  2. muscle system
  3. respiratory system
  4. circulatory system
Grade 8 Respiration, Digestion, and Excretion
What is the path of oxygen entering the body?
  1. nose - bronchi - lungs - trachea
  2. trachea - nose - bronchi - lungs
  3. nose - trachea - bronchi - lungs
  4. trachea - nose - lungs - bronchi
Grade 7 Respiration, Digestion, and Excretion
Food particles pass through the walls of the
  1. large intestine.
  2. small intestine.
  3. stomach.
  4. gallbladder.
Grade 6 Respiration, Digestion, and Excretion
In what organ of the digestive system do nutrients separate from waste?
  1. stomach
  2. liver
  3. large intestine
  4. small intestine
Grade 6 Respiration, Digestion, and Excretion
What system is responsible for breaking down food into energy?
  1. excretory system
  2. digestive system
  3. skeletal system
  4. circulatory system
Grade 7 Respiration, Digestion, and Excretion
What is the dome-shaped muscle that contracts when you inhale?
  1. diaphragm
  2. lungs
  3. stomach
  4. biceps
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