Middle Childhood - Adulthood (Body and Mind) Test 1 Answer Key

Body and Mind Part 1 1 The average North American newborn measures _____ inches in length. A. 14 B. 16 C. 20 D. 24 Answer Point Value: 1.0 points Answer Key: C 2 A typical child at 24 months weighs about _____ pounds. A. 19 B. 28 C. 41 D. 52 Answer Point Value: 1.0 points Answer Key: B 3 The average North American newborn weighs _____ pounds at birth. A. 5 B. 6 C. 7 D. 8 Answer Point Value: 1.0 points Answer Key: C 4 The average newborn triples his weight by: A. 6 months. B. 9 months. C. 1 year. D. 2 years. Answer Point Value: 1.0 points Answer Key: C 5 Children reach half their adult height by the age _____ years. A. 2 B. 3 C. 4 D. 6 Answer Point Value: 1.0 points Answer Key: A 6 Clara's weight is in the 30th percentile. This means that _____ percent of all babies her age weigh less than she does and _____ percent of all babies her age weigh more than she does. A. 30; 70 B. 20; 80 C. 70; 30 D. 80; 20 Answer Point Value: 1.0 points Answer Key: A 7 Jordan's weight is in the 50th percentile. This means that: A. he weighs 50 percent more than other children his age. B. he weighs 50 percent less than other children his age. C. the average weight for his age is 50 percent more than his weight. D. 50 percent of children his age weigh less than he does. Answer Point Value: 1.0 points Answer Key: D 8 A _____ is a ranking between 0 and 100 that compares children of the same age in order to determine whether a particular baby is growing well. A. normal score B. standard deviation C. percentile D. norm Answer Point Value: 1.0 points Answer Key: C 9 Alma brought her six-month-old son to the doctor for a well-baby visit. The doctor says 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 compared to other 6 month olds. Answer Point Value: 1.0 points Answer Key: D 10 Parents are told that their newborn is in the 90th percentile for height. This means that their child is: A. above average in height. B. below average in height. C. average in height. D. 90 percent of the desired height for his weight. Answer Point Value: 1.0 points Answer Key: A 11 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. Answer Point Value: 1.0 points Answer Key: C 12 A newborn's brain weight is _____ an adult's brain weight. A. greater than B. the same as C. 50 percent of D. 25 percent of Answer Point Value: 1.0 points Answer Key: D 13 Brain cells are called: A. frontal cells. B. axons. C. dendrites. D. neurons. Answer Point Value: 1.0 points Answer Key: D 14 A basic nerve cell in the central nervous system is called a(n): A. frontal cell. B. axon. C. dendrite. D. neuron. Answer Point Value: 1.0 points Answer Key: D 15 At birth, the human brain has: A. billions of neurons. B. trillions of neurons. C. 25 percent of its adult neurons. D. 50 percent of its adult neurons. Answer Point Value: 1.0 points Answer Key: B 16 The areas at the very front of the cortex: A. are responsible for visual functions. B. help humans to understand spoken words. C. assist with self-control. D. are well-developed in newborns. Answer Point Value: 1.0 points Answer Key: C 17 The outer layers of the brain are referred to as: A. the cortex. B. axons. C. dendrites. D. synapses. Answer Point Value: 1.0 points Answer Key: A 18 The last part of the brain to mature is the: A. axons. B. dendrites. C. synapses. D. prefrontal cortex. Answer Point Value: 1.0 points Answer Key: D 19 Which statement describes the brain's cortex? A. It is found in the center of the brain and is responsible for primitive emotions and reflexes. B. It makes up a small percentage of the outer brain and is responsible for movement. C. It makes up the outer layers of the brain and is responsible for thinking, feeling, and sensing. D. It is the gray matter of the brain where the intersections of dendrites and axons form. Answer Point Value: 1.0 points Answer Key: C 20 The area in the brain that plans, anticipates, and controls impulses is the _____ cortex. A. prefrontal B. parietal C. temporal D. striate Answer Point Value: 1.0 points Answer Key: A 21 Neurons in the brain meet at "intersections" called: A. synapses. B. cortexes. C. axons. D. dendrites. Answer Point Value: 1.0 points Answer Key: A 22 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 area where neurons determine whether a stimulus exceeds the absolute threshold or not. Answer Point Value: 1.0 points Answer Key: A 23 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. Answer Point Value: 1.0 points Answer Key: C 24 Dendrite growth is the main reason that brain weight _____ from birth to the age of two. A. decreases B. doubles C. triples D. quadruples Answer Point Value: 1.0 points Answer Key: C 25 Brain weight triples in size during first two years of life primarily because of the growth of: A. axons. B. dendrites. C. neurons. D. synapses. Answer Point Value: 1.0 points Answer Key: B 26 The brain develops extremely quickly in the first few years, but not all of this growth is permanent. Due to its rapidity and temporary nature, this rapid brain growth is called: A. dendrite proliferation. B. pruning. C. cortex multiplication. D. transient exuberance. Answer Point Value: 1.0 points Answer Key: D 27 Transient exuberance is the: A. rapid growth of dendrites during the first few years of life. B. high energy that toddlers experience following a nap. C. friendliness that infants display prior to the onset of stranger wariness. D. rapid growth of axons during the first few years of life. Answer Point Value: 1.0 points Answer Key: A 28 The process through which unused and misconnected dendrites atrophy and die is called: A. pruning. B. degeneration. C. transitional exuberance. D. myelination. Answer Point Value: 1.0 points Answer Key: A