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

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Grade 12 Respiration, Digestion, and Excretion
What does an increase in the rate of contractions of the diaphragm and rib muscles indicate?
  1. decreased reduced hemoglobin in the blood.
  2. decreased hydrogen ion concentration.
  3. increased concentration of oxyhemoglobin in the blood.
  4. increased concentration of bicarbonate ion in the blood.
Grade 12 Respiration, Digestion, and Excretion
What is the function of the cilia found in the respiratory system function?
  1. bring air into the lungs.
  2. initiate the coughing reflex.
  3. force air out of the lungs.
  4. move mucus towards the glottis.
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
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
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
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 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 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
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.
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
Which structure is located closest to the alveoli?
  1. bronchiole
  2. larynx
  3. pharynx
  4. trachea
  5. bronchus
Grade 12 Respiration, Digestion, and Excretion
What is breathing?
  1. the exchange of gases in the mitochondria
  2. the exchange of gases in the lungs
  3. the exchange of gases in chloroplasts
  4. the exchange of gases in the mouth
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
Which organ is the longest section of the digestive tube?
  1. small intestine
  2. stomach
  3. large intestine
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
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.
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