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Two-year-olds are about 20 percent of their adult weight.

A) True
B) False

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On average, which skill does an infant develop first?


A) running
B) walking backward
C) walking well
D) jumping

E) A) and D)
F) B) and C)

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Dendrite growth is the main reason that brain weight _____ from birth to the age of 2.


A) decreases
B) doubles
C) triples
D) quadruples

E) All of the above
F) C) and D)

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The fetus's sense of hearing develops during the _____ trimester of pregnancy.

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last (thir...

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Pruning neural connections slows neural communication and decreases thinking ability.

A) True
B) False

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The part of the brain that is very immature at birth is the _____.


A) axons
B) dendrites
C) synapses
D) prefrontal cortex

E) A) and B)
F) A) and C)

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Which of the following is a sense organ?


A) retina
B) neuron
C) brain
D) fusiform area

E) B) and D)
F) All of the above

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Brain maturation is the only factor that influences an infant's sleep patterns.

A) True
B) False

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The human body is equipped to protect the brain when malnutrition temporarily affects body growth. This protective feature is known as _____.


A) the blood-brain barrier
B) brain-override
C) head-sparing
D) caudal protection

E) B) and C)
F) None of the above

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Gross motor skill is to crawling as fine motor skill is to _____.


A) standing
B) sitting up
C) grabbing
D) crawling

E) All of the above
F) A) and B)

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By 2 months of age, babies not only stare at faces but also smile at them. This change is due to _____.


A) increased interest in other humans
B) increased awareness of caregivers' identities
C) changes in willingness to interact with adults
D) improvements in vision

E) B) and D)
F) B) and C)

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When they practice walking, toddlers average about _____ steps per hour of free play.


A) 300
B) 800
C) 1,200
D) 2,400

E) None of the above
F) All of the above

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The ability to move and control some parts of the body is referred to as _____.


A) instinct
B) facilitation
C) motor skill
D) reflex

E) A) and B)
F) B) and C)

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When the immune system is primed to resist a particular disease, the process is called _____.


A) exuberance
B) immunization
C) pertussis
D) head-sparing

E) A) and C)
F) B) and C)

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The function of neurotransmitters is to _____.


A) bind the neurons of the central nervous system together
B) form the synapse between neurons
C) carry information from one neuron to another
D) assist in the formation of new neurons

E) A) and B)
F) B) and D)

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Synapses are _____.


A) intersections where the axons of one neuron meet the dendrites of another neuron
B) where neurons make direct contact with one another
C) chemical structures that allow dendrites to send their messages to axons
D) the areas where neurons determine whether a stimulus exceeds the absolute threshold or not

E) B) and C)
F) None of the above

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All _____ are functional at birth, although some are more developed than others.


A) senses
B) brain stems
C) cognitions
D) perceptions

E) B) and C)
F) None of the above

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You see a beautiful yellow flower while walking through a meadow. The light reflected from the flower activates your retinas, producing _____.


A) knowing
B) cognition
C) sensation
D) perception

E) All of the above
F) C) and D)

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Alma brought her 6-month-old son to the doctor for a well-baby visit. The doctor said that her son's weight is in the 20th percentile. What does this definitely mean?


A) He is large for his age.
B) He is not growing properly.
C) He is malnourished.
D) He is small for his age.

E) B) and C)
F) A) and D)

Correct Answer

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_____ is a life-threatening injury that occurs when an infant is forcefully shaken, since this motion ruptures blood vessels in the brain and breaks neural connections.

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Shaken bab...

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