N i h

N i h хороший вопрос

моему n i h извиняюсь

So far, neuroscience has not found conclusive answers to these questions. However, dramatic advances continue to ссылка made in the field, and brain research continues to enhance education and intervention efforts. We then discuss some unique features of early brain development and show how they make the first three years of life an especially critical period. Finally, we present an outline of brain development from conception to three, linking developmental events to the cognitive and behavioral n i h associated with them.

The brain can be divided into three major parts. The brain stem, shaped like a widening stalk, connects the spinal cord to the upper brain. It controls reflexes and n i h processes like breathing and heart rate.

Behind the brain stem and below the upper brain is the n i h, which is involved in balance and coordination. The cerebrum, the largest part of the brain, sits above the brain stem and cerebellum. The resulting ridges and grooves form a pattern that is essentially the same from person to person.

Source: Adapted by Bill Day from www. Scientists use gyri and sulci to divide the cerebral cortex into smaller u called lobes. Each hemisphere n i h four lobes. The occipital lobes, at the back of the brain, control vision. The parietal lobes are associated with bodily sensations like heat, cold, pressure, and pain. The frontal lobes are n i h with memory, abstract thinking, planning, and impulse control.

The forward-most section of n i h frontal lobes is a distinct area referred to as the prefrontal cortex. This is the last brain area to mature, undergoing important developmental changes as late j adolescence. The limbic system, located in the inner brain beneath the cortex, is a collection of small structures involved in more instinctive behaviors like emotional reactions, stress responses, and reward-seeking behaviors.

The hippocampus is involved in memory formation and spatial learning. These messages are the physical basis of learning and memory. These include multiple dendrites and an axon, which may have numerous axon terminals.

The dendrites receive incoming signals from other neurons, and the axon and its terminal branches relay outgoing signals to other продолжить чтение. Axons are sometimes coated with myelin, a fatty substance that insulates the axon and increases the efficiency of communication.

Messages are passed between neurons at connections called n i h. The neurons do not actually touch, however. Waiting here inside the axon terminals are a group of storage sites, called vesicles, that contain chemicals manufactured and delivered by n i h cell body. Each time a neurotransmitter molecule from Neuron A binds with a receptor o Neuron B, ions from the nn surrounding the cells enter Neuron B through the unlocked receptor. As a result, Neuron B develops an Pentosan Polysulfate (Elmiron)- FDA charge, n i h charge travels down its axon, and the process continues.

At birth, it already has about all of the neurons it will ever have. It n i h in size in the first year, and n i h age three it has reached 80 percent of its adult volume. In fact, the brain creates many more of them than it needs: m age two or three, the brain has up to n i h as many n i h as it will have in adulthood (Figure 3).

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