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Twelfth Grade (Grade 12) Respiration, Digestion, and Excretion Questions

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Grade 12 Respiration, Digestion, and Excretion
Name three parts of the digestive system.
  1. large intestine, esophagus, lungs
  2. stomach, skin, mouth
  3. rectum, heart, stomach
  4. mouth, small intestine, esophagus
Grade 12 Respiration, Digestion, and Excretion
What does the respiratory system do?
  1. pumps blood throughout the body
  2. takes oxygen in and exchanges it for carbon dioxide
  3. gives the body nutrients
  4. makes babies
Grade 12 Respiration, Digestion, and Excretion
The main functions of the digestive system are
  1. ingestion and digestion.
  2. propulsion and secretion.
  3. absorption and elimination.
  4. all of the above
Grade 12 Respiration, Digestion, and Excretion
The digestive system is a group of organs that work together to
  1. take in oxygen and give carbon dioxide.
  2. convert food into energy.
  3. give the body shape.
  4. all of the above
Grade 12 Respiration, Digestion, and Excretion
The kidneys and urethra are part of which organ system?
  1. skeletal
  2. digestive
  3. urinary
  4. reproductive
Grade 12 Respiration, Digestion, and Excretion
Grade 12 Respiration, Digestion, and Excretion
Grade 12 Respiration, Digestion, and Excretion
The function of the digestive system is
  1. elimination and expulsion.
  2. digestion and absorption.
  3. absorption and elimination.
  4. circulation and excretion.
Grade 12 Respiration, Digestion, and Excretion
Which organ is the longest section of the digestive tube?
  1. small intestine
  2. stomach
  3. large intestine
Grade 12 Respiration, Digestion, and Excretion
Where is pepsin located?
  1. lungs
  2. small intestine
  3. stomach
  4. large intestine
Grade 12 Respiration, Digestion, and Excretion
Inhalation in humans is achieved by
  1. contraction of muscles in the lungs.
  2. contraction of the lungs.
  3. relaxation of the diaphragm and muscles between the ribs.
  4. contraction of the diaphragm and muscles between the ribs.
  5. relaxation of the diaphragm and contraction of the muscles between the ribs.
Grade 12 Respiration, Digestion, and Excretion
What is the role of the small intestine during the digestion process?
  1. absorbs water, mineral, salts, and vitamins
  2. secretes mucus to aid in the movement of feces
  3. completes food digestion and nutrients absorbed into the bloodstream
  4. none of the above
Grade 12 Respiration, Digestion, and Excretion
Alveoli are tiny air sacs in the
  1. pancreas.
  2. lungs.
  3. brain.
  4. liver.
Grade 12 Respiration, Digestion, and Excretion
How do oxygen and carbon dioxide cross capillary walls in the alveoli?
  1. endocytosis
  2. osmosis
  3. pinocytosis
  4. diffusion
  5. phagocytosis
Grade 12 Respiration, Digestion, and Excretion
The urinary system functions do not include
  1. producing urine.
  2. filtering waste products from the blood.
  3. regulating the acid-base balance of the body.
  4. eliminating fecal matter from the body.
Grade 12 Respiration, Digestion, and Excretion
When there is increased muscle activity, what occurs?
  1. higher oxygen demands and a decrease in heart rate
  2. higher oxygen demands and an increase in heart rate
  3. lower oxygen demands and an increase in heart rate
  4. lower oxygen demands and a decrease in heart rate
Grade 12 Respiration, Digestion, and Excretion
What is the order of passage as air is inhaled into the lungs in a typical mammal?
  1. nasal cavity, pharynx, larynx, bronchiole, bronchus, trachea, alveolus
  2. nasal cavity, larynx, pharynx, trachea, bronchus, bronchiole, alveolus
  3. nasal cavity, pharynx, larynx, trachea, bronchus, bronchiole, alveolus
  4. nasal cavity, pharynx, larynx, trachea, bronchiole, bronchus, alveolus
  5. nasal cavity, pharynx, trachea, larynx, bronchus, bronchiole, alveolus
Grade 12 Respiration, Digestion, and Excretion
During exhalation in a typical young adult human,
  1. the diaphragm contracts and flattens, moving downward.
  2. the rib cage returns to a resting position.
  3. alveolar pressure becomes lower than atmospheric pressure.
  4. the volume of the chest cavity increases.
  5. the lungs expand.
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