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

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Grade 8 Respiration, Digestion, and Excretion
Three organs of the digestive system that food does not pass through are the
  1. stomach, esophagus, and small intestine.
  2. liver, gall bladder, and pancreas.
  3. large intestine, small intestine, and stomach.
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 8 Respiration, Digestion, and Excretion
Grade 8 Respiration, Digestion, and Excretion
Which system includes the stomach?
  1. circulatory system
  2. reproductive system
  3. digestive system
  4. urinary system
Grade 8 Respiration, Digestion, and Excretion
The process by which an organism gets rid of waste materials is
  1. ingestion.
  2. digestion.
  3. respiration.
  4. excretion.
Grade 8 Respiration, Digestion, and Excretion
The gallbladder and pancreas are organs of the
  1. digestive system.
  2. nervous system.
  3. circulatory system.
  4. excretory system.
Grade 8 Respiration, Digestion, and Excretion
What gland is responsible for forming insulin?
  1. thyroid gland
  2. pancreas
  3. pituitary gland
  4. adrenal gland
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 a bolus?
  1. a round "ball" of food, typically consisting of masticated food upon swallowing
  2. a pulpy fluid that is acidic and that transfers between the stomach and small intestine
  3. an enzyme involved in digesting fats
  4. masticated food after swallowing
Grade 8 Respiration, Digestion, and Excretion
What is the main job of the large intestine?
  1. get rid of all the fats in your body
  2. help control the sugar level in your body
  3. break down food into chyme
  4. form the food waste into feces
Grade 8 Respiration, Digestion, and Excretion
                    occurs in the alveoli.
  1. Gas exchange
  2. Digestion of food
  3. Production of urine
  4. Nothing
Grade 8 Respiration, Digestion, and Excretion
The three parts of the small intestine are the
  1. ileum, jejunum, and duodenum.
  2. absorption, esophagus, and enzyme.
  3. peristalsis, gastrin, and secretin.
  4. lipids, saliva, and epiglottis.
Grade 8 Respiration, Digestion, and Excretion
What TWO things happen in the stomach? (Select all that apply.)
  1. Acid helps kill bacteria and break down the food.
  2. Food goes directly into the bloodstream.
  3. The muscles churn the food around.
  4. Food stays here until it spoils.
  5. Oxygen is produced inside.
Grade 8 Respiration, Digestion, and Excretion
In which organ is water absorbed?
  1. liver
  2. small intestine
  3. large intestine
  4. esophagus
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
What THREE things are true about the small intestine? (Select all that apply.)
  1. Most of the chemical digestion occurs here.
  2. It is over 50 feet long.
  3. Proteins, carbohydrates, and fats are broken down here by enzymes and enter the bloodstream.
  4. Food is in the small intestine for only about 10 minutes.
  5. It is lined with villi, or little finger-like projections.
Grade 8 Respiration, Digestion, and Excretion
What is the function of the liver? (Select all that apply.)
  1. make mucus
  2. store glucose (sugar)
  3. make bile for digestion
  4. remove harmful chemicals
  5. produce more oxygen
Grade 8 Respiration, Digestion, and Excretion
Grade 8 Respiration, Digestion, and Excretion
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