Elephantiasis is a tropical disease where small nematode larvae block the lymphatic ducts. As a result, the legs become large like those of an elephant and the scrotum and arms may also swell. This problem would be a severe form of
Which of the following is considered a specific defense against infection?
antibodies in mother's milk
Which protein forms an orderly cascade of reactions in the blood and ends be forming pores in bacterial cell membranes?
The clonal selection theory states that
when a B or T cell is stimulated by encountering the correct antigenm it divides to form a clone of cells that will respond to the same antigen.
Which Type of lymphocyte is somtimes called a "killer cell" that brings about destruction of antigen-bearing cells?
cytotoxic T cell
Which molecule is released from a viral infected cell that interferes with viral replication
Edward Jenner promoted the use of cowpox infection, that was very similar to more dangerous smallpox, as a vaccination to provide patients immunity from future smallpox epidemics. This was a case of these subjects
developing active immunity
When you have been bitten by a highly venomous snake and received a dose of venom sufficient to kill several people, you do not have the time to build up your own immunity over the next week. However, hospitals carry antivenin" made from injecting horses with small to larger dosages of snake venom, and then harvesting the antibodies from the horse plasma. This is a case of you
borrowing passive immunity
The textbook describe the problem with Rh factor hemolytic disease of the newborn in the case where the mother is Rh- and the father is Rh+
This is only a problem in the given case because the Rh -mother lacks the Rh+ protein and only a Rh + father could produce an Rh+ child
Which of the following is not an autoimmune disease? MS,systemic lupus, RA, inflammation, all of the above
Which of the following is/are examples of non-specific immunity? Natural killer cells, compliment, inflammation, interferon, all of the choices are correct
all of the choices are correct
__ infections are those that become established in people whose immune systerms are compromised by some other cause
Natural Killer (NK) cells are lymphocytes that do/do not depend on recognition of a specific foreign antigen
do not depend
Which term can be described as the process of coating bacteria with complement, making them easier to phagocytize?
The function of an antigen-presenting cell depends on the presence of ___ on its plasma membrane.
When an antigen triggers the multiplication of B lymphocytes, some daughter cells transform into antibody producing cells and mount an attack, while others become
Tapeworms, hookworms and other parasites too large to phagocytize are attacked mainly by
Which of these is not one of the cardinal signs of inflammation? redness, fever, swelling, heat, pain
All of the following are autoimmune diseases except: anaphalaxis, systemic lupus erythematosus, rheumatic fever, type II diabetes mellitus, myasthenis gravis
Air that is moving out during expiration will become __ compared to air in the lungs.
cool and lose moisture
Trace the path of an inhaled air molecule
Which of the following statements correctly describes air movement along the respiratory tract? Cillia and hairs in the nose help to screen out foreign particles in the air, food and air both enter the pharynx, presenting a potential danger to respiration, air reaching the lungs has been warmed to boduy temperature by passage through the nose and upper respiratory system, the glottis is the passageway through the larynx by which air enters the trachea, all choices are true
all choices are true
It is extremely difficult to save a premature baby at 4 or 5 months of pregnancy because physicians say there is a wall that prevents survival much earlier than six months. What causes this wall past which they cannot push infant survival
The premature alveoli do not develop surfactant to prevent their collapsing shut
A short while after a person has died a "gasp" of air may occur as the lungs collapse. This flow would represent the
If a person was born and grew up at a higher altitude in the Andes mountain, what consquences would we expect
1. Larger vital capacity from larger chest volume. 2. Ability to breathe slower at sea level than natives of sea level areas 3. Greater endurance in marathon sports conducted at sea level 4. More hemoglobin