Chapter 8 - How Does the Nervous System Develop and Adapt? Flashcards
Research has linked the neurotransmitter \_\_\_\_\_\_ to sudden infant death syndrome (SIDS). A) dopamine B) serotonin C) acetylcholine D) norepinephrine
B) serotonin
According to recent research, which of the following scenarios is most likely to lead to an infant death from SIDS?
A) higher than normal levels of serotonin
B) faster reuptake of serotonin in the synapse
C) lower than normal levels of acetylcholine
D) higher levels of acetylcholinesterase
B) faster reuptake of serotonin in the synapse
Which of the following statements regarding SIDS is not true?
A) SIDS is linked with serotonin levels.
B) Mice with high levels of 5-HT1A autoreceptors are more likely to die of SIDS.
C) SIDS kills about 2500 babies a year in the United States.
D) SIDS is more common in girls
D) SIDS is more common in girls
Planning skills are the function of: A) parietal lobes. B) temporal lobes. C) occipital lobes. D) frontal lobes.
D) frontal lobes
You can test planning capability by using the: A) Weschler Adult Intelligence Scale. B) digit span test. C) Tower of Hanoi test. D) mirror drawing test.
C) Tower of Hanoi test
Which of the following is not a correct statement about development?
A) The brain of a child is the same as that of an adult only smaller.
B) Because there are behaviors that develop late, there must be neural structures that develop late.
C) Because a brain structure develops late, there must be behaviors that develop late.
D) The brains of children at different ages are not comparable
The brain of a child is the same as that of an adult only smaller
The frontal lobes are fully developed: A) at birth. B) around age 5. C) around age 10. D) None of the answers is correct.
D) None of the answers is correct
The idea of preformation would imply that:
A) an embryo is a miniature adult.
B) embryos of different species look different.
C) embryos should look nothing like an adult.
D) embryos of different species look different and embryos should look nothing like an adult
A) an embryo is a miniature adult
Which of the following embryos has a forebrain, brainstem, and spinal cord? A) salamander B) human C) chicken D) salamander, human, and chicken
D) salamander, human, and chicken
A primitive brain can be seen in a human embryo by the \_\_\_\_\_\_ week after conception. A) first B) second C) third D) fourth
C) third
After the second week of prenatal development the \_\_\_\_ progresses to become a(n) \_\_\_\_\_\_. A) zygote; embryo B) embryo; zygote C) zygote; fetus D) embryo; fetus
A) zygote; embryo
The forebrain, midbrain, and hindbrain are first visible in a human embryo after about: A) 10 days. B) 14 days. C) 28 days. D) 35 days.
C) 28 days
The central nervous system originates from: A) the neural crest. B) the neural tube. C) the neural envelope. D) All of the answers are correct.
B) the neural tube
In human embryos, gyri and sulci first start to form after about: A) 30 days. B) 5 months. C) 7 months. D) 8 months.
C) 7 months
Sexual differentiation occurs by the end of the \_\_\_\_\_\_ month of gestation. A) first B) second C) third D) fourth
B) second
Testosterone:
A) is present only after the testes are formed.
B) affects the peripheral sexual characteristics but not the development of the brain.
C) affects the peripheral sexual characteristics and the development of the brain in both males
and females.
D) affects the peripheral sexual characteristics and the development of the brain in males but not
females
D) affects the peripheral sexual characteristics and the development of the brain in males but not
females
Male and female genitalia become differentiated at around: A) 30 days. B) 60 days. C) 4 months. D) 6 months.
B) 60 days
\_\_\_\_\_\_ have an almost limitless capacity for self-renewal. A) Stem cells B) Progenitor cells C) Glial cells D) Neuroblasts
A) Stem cells
In an adult, stem cells are found in: A) the hippocampus. B) the ventricles. C) the pia mater. D) the CSF.
B) the ventricles
Progenitor cells come from: A) neuroblasts. B) stem cells. C) glioblasts. D) glial cells.
B) stem cells
Neuroblasts and glioblasts are formed directly from: A) stem cells. B) progenitor cells. C) the ventricles. D) the neural tube.
B) progenitor cells.
Which of the following sequences is correct? A) stem, progenitor, blast, glia B) progenitor, stem, blast, glia C) blast, stem, progenitor, glia D) stem, progenitor, glia, blast
A) stem, progenitor, blast, glia
\_\_\_\_\_\_ is the process that works to suppress gene expression. A) Methylation B) Mutation C) Translation D) Transcription
A) Methylation
Compounds that signal brain cells to develop in certain ways are called: A) progenitors. B) neurotropic factors. C) somites. D) chemical factors.
B) neurotropic factors
If you wanted to increase the number of progenitor cells, you could always add: A) nerve growth factor. B) fibroblast growth factor. C) epidermal growth factor. D) testosterone.
C) epidermal growth factor
Which of the following is the correct sequence of brain development?
A) cell birth, cell differentiation, cell migration, myelogenesis
B) cell birth, cell migration, cell differentiation, cell maturation
C) cell birth, cell maturation, cell differentiation, cell migration
D) cell birth, cell maturation, myelogenesis, cell migration
B) cell birth, cell migration, cell differentiation, cell maturation
Neurogenesis (the process of forming neurons) is largely complete by: A) 10 weeks. B) 20 weeks. C) 30 weeks. D) 40 weeks.
B) 20 weeks
Neuronal differentiation is largely complete by: A) 8 weeks. B) 23 weeks. C) 29 weeks. D) 31 weeks.
C) 29 weeks
Cell differentiation: A) occurs after neuron maturation. B) occurs after migration. C) occurs before neuron generation. D) is not complete until well after birth
B) occurs after migration
The brain can cope with injury more easily during: A) differentiation. B) cell migration. C) neurogenesis. D) neuron maturation.
C) neurogenesis
The \_\_\_\_\_\_ is thought to contain a primitive map or blueprint of the cortex that tells developing neurons where to migrate to. A) brainstem B) thalamus C) subventricular zone D) hippcampus
C) subventricular zone
Cells find their appropriate location by following a road laid down by: A) astrocytes. B) oligodendrocytes. C) radial glial cells. D) None of the answers is correct.
C) radial glial cells
Neurons migrate to the correct locations by following:
A) radial glial cells.
B) chemical signals.
C) genetic signals.
D) both radial glial cells and chemical signals.
D) both radial glial cells and chemical signals
Cells in layer \_\_\_\_\_\_ of the cortex develop first. A) I B) III C) IV D) VI
D) VI
Neuronal maturation involves \_\_\_\_\_\_ and \_\_\_\_\_\_. A) migration; specialization B) dendrite growth; synapse formation C) migration; synapse formation D) specialization; dendrite growth
B) dendrite growth; synapse formation
The process of dendrite growth that occurs in the first 2 years of life is referred to as: A) arborization. B) extension. C) sprouting. D) shaping.
A) arborization
Generally speaking, \_\_\_\_\_\_ tend to grow much faster than \_\_\_\_\_\_. A) neurons; glia B) glia; neurons C) axons; dendrites D) dendrites; axons
C) axons; dendrites
The dendritic field in \_\_\_\_\_\_ starts off very simply, but becomes increasingly complex until about 2 years of age. A) visual cortex B) Broca’s area C) auditory cortex D) somatosensory cortex
B) Broca’s area