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Eighth Grade (Grade 8) Respiration, Digestion, and Excretion Questions

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Grade 8 Respiration, Digestion, and Excretion
Which list shows 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 8 Respiration, Digestion, and Excretion
Carbohydrate digestion starts in the
  1. small intestine
  2. esophagus
  3. stomach
  4. mouth
Grade 8 Respiration, Digestion, and Excretion
What is the main job of the large intestine?
  1. To get rid of all the fats in your body.
  2. To help control the sugar levels in your body.
  3. To break down the food into chyme.
  4. To form the food waste into feces.
Grade 8 Respiration, Digestion, and Excretion
After air is inhaled where does the exchange of oxygen take place?
  1. in the lungs from the alveoli to the capillaries
  2. in the blood from the alveoli to the blood vessels
  3. in the lungs from the bronchi to the trachea
  4. in the blood from the white blood cells to red blood cells
Grade 8 Respiration, Digestion, and Excretion
Where are the bronchioles located?
  1. in the throat.
  2. in the trachea.
  3. at the end of the bronchial tubes.
  4. below the diaphragm.
Grade 8 Respiration, Digestion, and Excretion
Mark 2 things that happen in your stomach.
  1. Acid helps kill bacteria and break down the food.
  2. Your food goes right into your bloodstream.
  3. The muscles start churning the food around.
  4. Food stays there until it spoils.
  5. Oxygen is produced inside.
Grade 8 Respiration, Digestion, and Excretion
What is the function of the liver? Select all that apply.
  1. Makes mucus.
  2. Stores glucose (sugars).
  3. Makes bile for digestion.
  4. Removes chemicals that could harm you.
  5. Produces more oxygen.
Grade 8 Respiration, Digestion, and Excretion
Mark 3 things that are true about the small intestine.
  1. Most of the chemical digestion occurs here.
  2. It is over 50 feet long.
  3. Proteins, carbohydrates, and fats are broken down by enzymes and enter the bloodstream.
  4. Food is only in the small intestine for about 10 minutes.
  5. It is lined with villi- little finger-like projections.
Grade 8 Respiration, Digestion, and Excretion
Grade 8 Respiration, Digestion, and Excretion
What does the pancreas do?
  1. cleans blood
  2. absorbs nutrients
  3. It releases powerful digestive enzymes into the small intestine to aid the digestion of food.
  4. It releases the hormones insulin and glucagon into the bloodstream.
Grade 8 Respiration, Digestion, and Excretion
Which of these describes what happens when you breathe out?
  1. diaphragm relaxes into an upward position, the ribs settles downwards, the space shrinks and air is forced out of the lungs.
  2. diaphragm contracts and drops down, the ribs expands outwards, the space shrinks and air rushes out of the lungs.
  3. diaphragm contracts and drops down, the ribs expands outwards and air rushes into the lungs to fill the space.
  4. diaphragm relaxes into an upward position, the ribs expands outwards and air rushes into the lungs to fill the space.
  5. none of the above
Grade 8 Respiration, Digestion, and Excretion
What is the gland responsible for forming insulin?
  1. thyroid gland
  2. pancreas
  3. pituitary gland
  4. adrenal gland
Grade 8 Respiration, Digestion, and Excretion
What is the function of the sinuses?
  1. divide incoming oxygen into left and right lungs.
  2. warm and moisten air before entering lungs.
  3. allow bacteria to enter.
  4. strengthen the diaphragm.
Grade 8 Respiration, Digestion, and Excretion
What is the function of the trachea? Select all that apply.
  1. a voice box
  2. for air to pass through to the bronchioles
  3. where food passes
  4. carbon dioxide exits here
Grade 8 Respiration, Digestion, and Excretion
What is a bolus?
  1. chewed food at the moment of swallowing.
  2. pulpy acidic fluid that passes from the stomach to the small intestine
  3. an enzyme
  4. chewed food after swallowing
Grade 8 Respiration, Digestion, and Excretion
Which of these describes what happens when you breathe in?
  1. diaphragm relaxes into an upward position, the ribs settles downwards, the space shrinks and air is forced out of the lungs.
  2. diaphragm contracts and drops down, the ribs expands outwards, the space shrinks and air is forced out of the lungs.
  3. diaphragm contracts and drops down, the ribs expands outwards and air rushes into the lungs to fill the space.
  4. diaphragm relaxes into an upward position, the ribs expands outwards and air rushes into the lungs to fill the space.
  5. none of the above
Grade 8 Respiration, Digestion, and Excretion
Which is the correct order gas passes when breathing in?
  1. trachea, bronchus, alveoli, bronchiole
  2. bronchus, alveoli, bronchiole, trachea
  3. trachea, bronchus, bronchiole, alveoli
  4. bronchus, bronchiole, trachea, alveoli
Grade 8 Respiration, Digestion, and Excretion
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