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Myelination of the neurons involved in the sense of hearing begins
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Neurons consist of a cell body, axon and dendrites. Axon is the one that differentiates the length of the neuron. These neurons are tightly packed by the high fat content sheath called myelin sheath.
This protects the neuron from leaking the electrically charged atoms in the fluids that encase the nervous system. It is gradually developed as the age progresses.
The conception of the prenatal development is divided into three stages
1. The germinal stage
2. Embryonic stage
3. Fetal stage.
The myelination of different parts takes place in different stages of the conception. At birth the parts that are involved in sleeping, heartbeat and respiration are well myelinated than the other parts. So they are well functioned.
Hence the option (c) is not correct.
Later the myelination of the parts that involves the stereotyped reflexes takes place. Otherwise the physical activities will be affected.
Hence the option (d) is not correct.
The sensory functions like touch, see, and hear myelination begins at the six month of pregnancy means embryonic stage but they are less myelinated at the beginning. Later till the child attains of four years myelination continues and the connections between these areas of cortex thickens and function well.
Hence the correct option is
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Failure to receive adequate sensory stimulation during a ____________ period can result in permanent sensory deficits.
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Nature and nurture are the two things that are involved in the better brain development. The areas of the brain that control sensation and moment begin as a result of maturation. But physical and sensory stimulation also spurts.
Sensory stimulation sparks the cortex. This is proved by the experiment done on rats. Two sets of rats are taken into the experiment. Some rats are exposed to complex environment that involves the toys and ladders. And the control group is grown under the dark area.
The result is that the rats grown under complex environment have heavier brains than the control groups. The control groups have developed shrinkage visual cortex and impaired vision. This illustrates that if they are not used they are lost.
Thus adaptability allows us to develop more neural connections to different environments. So lack of sensory stimulation during critical periods can result in permanent sensory defects.
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Animals reared in darkness show shrinkage of the ____________.
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Nature and nurture are the two things that are involved in the better brain development. The areas of the brain that control sensation and moment begin as a result of maturation. But physical and sensory stimulation also spurts.
Sensory stimulation sparks the cortex. This is proved by the experiment done on rats. Two sets of rats are taken into the experiment. Some rats are exposed to complex environment that involves the toys and ladders. And the control group is grown under the dark area.
The result is that the rats grown under complex environment have heavier brains than the control groups. The control groups have developed shrinkage visual cortex and impaired vision. This illustrates that if they are not used they are lost.
Hence the blank can be filled with the
.
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How long does it take for a child's brain to reach half of its adult weight
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Breast milk contains the mother's ____________ and helps the infant ward off health problems such as ear infections and pneumonia.
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Fantz showed 2-month-old infants disks colored red, white, and yellow, and disks with newsprint, a bull's eye, and a human face. The infants fixated longest on the ____________.
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At 3 to 4 months of age, infants hold objects clumsily between their fingers and their palm. This behavior is known as the
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Which of the following is most accurate about a newborn's taste preferences
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Native American Hopi Indians typically spend the first year strapped to a ____________.
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The American Academy of Pediatrics recommends that infants be fed breast milk for at least
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The tendency to return to one's genetically determined pattern of growth following a period of deprivation is referred to as ____________.
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The first major growth spurt of the brain occurs during the fourth and fifth months of prenatal development, due to the proliferation of ____________.
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In the disease ____________ , myelin is replaced by hard, fibrous tissue that disrupts the timing of neural transmission, interfering with muscle control.
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By 12 to 15 months or so, infants walk by themselves, earning them the name ____________.
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