What type of eye movement helps you to follow a moving object?
A. Saccadic
B. Smooth pursuit
C. Fixational
D. Vergence
Answer: B
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Ling, a 75-year-old grandmother, complained that her vision was becoming obscured. Upon examination by an ophthalmologist she was told she had cataracts. What are they, how do they occur, and how are they treated?
What will be an ideal response?
The human body is made up of approximately how many specialized cell types?
a. 400 b. 200 c. 100 d. 50 e. 25
Clonal selection occurs when:
A) plasma cells secrete antibodies. B) B cells undergo rapid mitosis. C) B cells are activated. D) B cells differentiate into plasma cells and memory B cells.
Blood enters into what structure in the heart from the superior and inferior vena cavae?
A. Right atrium B. Left ventricle C. Left atrium D. Right ventricle