Edwin is able to see normally in low-light conditions and demonstrates a normal ability to detect movements in his periphery. However, he has great difficulty recognizing different colors. He sees the world mostly in shades of gray. Which of the following structures are either impaired or not present in Edwin's eyes?
A. Sclerae
B. Cornea
C. Rods
D. Cones
Answer: D
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The word puberty is derived from the Latin word meaning "to grow larger."
a. True b. False
Which of the following is the newest reason to study infants, among the reasons cited in the text?
a. The ability to communicate through language emerges during the first three years. b. By three to four months of age, initially immobile infants roll over. c. Infants who are born preterm are more likely than ever before to survive. d. Pediatricians are interested in studying the conditions under which infants thrive.
Violence in discharged mental patients is usually attributable to:
a) The natural tendency of most mental patients to be violent b) Their failure to take their medication c) Environmental conditions that elicited and set the stage for violence d) A predictable personality structure characterized by high impulsivity and low harm avoidance
The risk of developing schizophrenia for the general population is percent
a. one b. five c. 10 d. 25