What is the best graft to have so as to avoid rejection of a transplanted tissue?
A) an autograft
B) a graft from a recently deceased individuals
C) a graft from another primate
D) a xenograft
E) an allograft
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Question 2) The normal resting eye is generally set for distant vision.
Indicate whether the statement is true or false
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Question 3) What type of T cell releases cytokines to indirectly rid the body of antigens?
A) helper T cells
B) cytotoxic T cells
C) regulatory T cells
D) killer T cells
E) suppressor T cells
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Question 4) An astigmatism results from unequal curvatures of the cornea or lens.
Indicate whether the statement is true or false
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Question 5) Antigen presentation is essential for the activation and clonal selection of ________.
A) T cells
B) B cells
C) plasma cells
D) antigen-presenting cells
E) antibodies
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Question 6) From the optic nerve, the visual pathway continues to the optic chiasma, optic tracts, thalamus, optic radiation, and then visual interpretation occurs in the occipital lobe.
Indicate whether the statement is true or false
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Question 7) The process by which antibodies bind to specific sites on bacterial exotoxins (toxic chemicals secreted by bacteria) to block their harmful effects is called ________.
A) agglutination
B) chemotaxis
C) complement fixation
D) neutralization
E) precipitation
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Question 8) The ciliary body is a smooth muscle structure to which the lens is attached.
Indicate whether the statement is true or false
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Question 9) Which antibody-antigen interaction results when a foreign blood type is transfused and clumped?
A) opsonization
B) agglutination
C) neutralization
D) precipitation
E) phagocytosis
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Question 10) Cones are photoreceptor cells that allow us to see gray tones in dim light.
Indicate whether the statement is true or false
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