Pig Dissection

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Unit 3 Internal Systems

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.

____1.The human stomach is
a.| made up of a single type of cell.| d.| a complex organ.| b.| a single tissue.| e.| an organ system.|
c.| a simple organ.|

____2.Which of the following is not part of the mammalian digestive system? a.| esophagus| d.| small intestine|
b.| crop| e.| large intestine|
c.| stomach|

____3.In which of the following lists are the structures listed in order from the simplest to the most complex? a.| organ system, organ, tissue, cell| d.| cell, tissue, organ, organ system| b.| tissue, organ, organ system, cell| e.| cell, organ, tissue, organ system| c.| cell, organ system, system, tissue|

____4.A doctor suspects that a tumour present in the digestive tract of a patient is cancerous. Which of the following procedures would the doctor use to confirm the diagnosis? a.| a CAT scan| d.| a PSA blood test|

b.| an X ray| e.| an injection of a radionucleotide|
c.| a MRI |

____5.Which of the following diagnostic techniques would be used to observe peristalsis? a.| X ray| d.| an MRI|
b.| CAT scan| e.| a nuclear implant|
c.| nuclear imaging|

____6.In which of the following lists are the events listed in the sequence in which they actually occur? a.| ingestion, absorption, digestion, egestion|
b.| ingestion, digestion, absorption, egestion|
c.| absorption, ingestion, egestion, digestion|
d.| absorption, digestion, ingestion, egestion|
e.| digestion, ingestion, absorption, egestion|

____7.Which of the following statements correctly describes the relationship between pH and enzyme activity? a.| All enzymes function best around pH 7.|
b.| All enzymes function best when the pH is less than 7.| c.| All enzymes function best when the pH is greater than 7.| d.| There are some enzymes that function when the pH is less than 7 and others that function when the pH is greater than 7.| e.| There are some enzymes that function when the pH is less than 7, some that function around pH 7, and others that function when the pH is greater than 7.|

____8.Which of the following statements is true?
a.| Canines are used mainly for tearing.| d.| Molars are used mainly for grinding.| b.| Canines are used mainly for grinding.| e.| Incisors are used mainly for grinding.| c.| Molars are used mainly for tearing.|

____9.Which of the following statements is not a function of saliva? a.| It lubricates the food passage.| d.| It activates the taste buds.| b.| It contains the enzyme amylase.| e.| It dissolves food particles.| c.| It helps grind and tear food.|

____10.The pH of the stomach usually ranges
a.| between 2.0 and 3.0.| d.| between 7.0 and 9.0.|
b.| between 3.0 and 5.0.| e.| between 9.0 and 10.0.|
c.| between 5.0 and 7.0.|

____11.Which of the following is not found in digestive fluids in the stomach? a.| hydrochloric acid| d.| amylase|
b.| pepsinogen| e.| mucus|
c.| pepsin|

____12.Lasers allow doctors to perform surgery that causes less damage to surrounding tissue because laser beams a.| produce so much heat.| d.| are wider than a scalpel blade.| b.| produce ultraviolet rays.| e.| have less energy than a light beam.| c.| are thinner than a scalpel blade.|

____13.Which of the following factors probably does not contribute to the formation of peptic ulcers? a.| stress|
b.| diet|
c.| a bacterium known as Heliobacter pylori|
d.| drinking large amounts of milk|
e.| drinking large amounts of orange juice|

____14.Starch digestion in the mouth occurs best when the pH range is a.| 2.0 - 3.0.| d.| 8.0 - 10.0.|
b.| 3.0 - 5.0.| e.| 10.0 - 12.0.|
c.| close to 7.0.|

____15.Which of the following enzymes...
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