chapter 20, and 21
Match the following digestive processes with the correct description
Mechanical Digestion – Chewing, mixing, churning and segmentation of food
Defecation – Elimination of indigestible solids
Chemical Digestion – Enzymatic degradation of foodstuffs into simpler molecules
Absorption – Passage of digested materials from the lumen of the GI tract into the blood or lymph
Ingestion – Taking food into the digestive system
What is the consequence of obstruction of the lymphatics
Obstruction of the lymphatics results in edema distal to the obstruction.
Children born without a thymus must be kept in a germ-free environment if they are to survive. Explain why this is necessary.
If the thymus fails to develop, the T cells will not mature and become immunocompetent. If T cell function is disrupted, there is no resistance to disease.
What are some of the drawbacks of passive humoral immunity?
The effects are short lived; it does not trigger memory cell production; and your body degrades the antibodies.
Which of the following would not be classified as a lymphatic structure?
The thymus is most active during:
The lymphatic capillaries are:
more permeable than blood capillaries.
Peyer's patches are found in the:
The tonsils located at the base of the tongue are the
Which of the following is associated with passive immunity?
passage of IgG antibodies from a pregnant mother to her fetus
Which of the following is not a function of the inflammatory response?
replaces injured tissues with connective tissue
the system that recognizes foreign molecules and acts to immobilize, neutralize, or destroy them is the:
interfere with viral replication within cells
The system that recognizes foreign molecules and acts to immobilize, neutralize, or destroy them is the:
Which of the following is characteristic of complete antigens?
reactivity with an antibody
Innate immune system defenses include
Select the correct statement about active and passive immunity.
Active and passive humoral immunity are both mechanisms of specific immunity that use antibodies.
include anaphylaxis, triggered by a second (or later) exposure to an allergen to which the individual has been sensitized.
Select the correct statement about antigens.
type II diabetes
The chemical and mechanical processes of food breakdown are called:
The absorptive effectiveness of the small intestine is enhanced by increasing the surface area of the mucosal lining. Which of the following accomplish this task?
plicae circulares and intestinal villi
The ducts that deliver bile and pancreatic juice from the liver and pancreas, respectively, unite to form the:
The terminal portion of the small intestine is known as the:
Which of the following is not characteristic of the large intestine? It:
is longer than the small intestine.
A baby is admitted to the hospital with a history of projectile vomiting after each feeding. On examination, it is found that the sphincter controlling food passage from the stomach to the duodenum is thickened and does not open readily. Because of the baby's loss of gastric juice, his blood probably indicates:
When a person's hypothalamic thermostat is set to a higher level and the actual body temperature is below that level, the person may:
When the lymphatics are blocked due to tumors, the result is:
severe localized edema distal to the blockage.