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Seventh Grade (Grade 7) Respiration, Digestion, and Excretion Questions

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Grade 7 Respiration, Digestion, and Excretion
Where does the digestive system begin?
  1. esophagus
  2. stomach
  3. mouth
  4. feet
Grade 7 Respiration, Digestion, and Excretion
The liver is part of which organ system?
  1. digestive
  2. respiratory
  3. nervous
  4. cardiovascular
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 7 Respiration, Digestion, and Excretion
The wave-like movement that moves food through the digestive system is
  1. chyme.
  2. mechanical digestion.
  3. peristalsis.
  4. chemical digestion.
Grade 7 Respiration, Digestion, and Excretion
What is the purpose of the respiratory system?
  1. to break down food for energy and nutrients
  2. to facilitate the exchange of oxygen and carbon dioxide
  3. to provide response to stimuli in the world around us
  4. to provide structure and support for the body
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
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 7 Respiration, Digestion, and Excretion
Which body system is shown in the diagram?
Respiratory System
  1. nervous
  2. endocrine
  3. circulatory
  4. respiratory
Grade 7 Respiration, Digestion, and Excretion
Grade 7 Respiration, Digestion, and Excretion
Where does the digestive system start?
  1. stomach
  2. mouth
  3. intestines
  4. esophagus
Grade 7 Respiration, Digestion, and Excretion
What word best describes the function of the trachea?
  1. passageway
  2. entry point
  3. muscle
  4. pumping station
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 7 Respiration, Digestion, and Excretion
What can you infer about the function of the ribcage?
  1. It helps the lungs pump oxygen.
  2. It connects the trachea to the lungs.
  3. It protects the lungs.
  4. It delivers oxygen from the lungs to the blood vessels.
Grade 7 Respiration, Digestion, and Excretion
When you inhale, oxygen enters your body through the
  1. esophagus.
  2. nose.
  3. diaphragm.
  4. heart.
Grade 7 Respiration, Digestion, and Excretion
Grade 7 Respiration, Digestion, and Excretion
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
Grade 7 Respiration, Digestion, and Excretion
Where is hydrochloric acid added to the food mass?
  1. mouth
  2. stomach
  3. small intestine
  4. large intestine
Grade 7 Respiration, Digestion, and Excretion
What is chemical digestion?
  1. physical breakdown of food through chewing and churning, making digestion easier
  2. organism’s ability to keep the proper conditions inside no matter what is going on outside of the organism
  3. breakdown of food through compounds such as acids and enzymes, making it possible for the body to absorb nutrients
  4. process that releases energy by breaking down glucose and other food molecules in the presence of oxygen
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