Nervous System (CNS), answer them all with just few words no need for details an

Question

Nervous System (CNS), answer them all with just few words no need for details and I will rate you.

1-What is the forebrain composed of? The cerebrum makes up about 80% of the brain. What composes the other 20%? The cerebrum is divided into two separate hemispheres (a right and a left), yet the two intercommunicate. What structure of the brain facilitates this cross-talk?

2-The cerebral cortex is an aggregation of gray matter and glial cells. What is the gray matter composed of? What are the glial cells found in the cerebral cortex?

3-Which lobe of the cerebrum is responsible for you recognizing yourself in the mirror in the morning? Which lobe of the cerebrum receives afferent information from the integument? At some point in your life, someone locked up their brakes in front of you on the road. The bright-red brake lights were a sign of impending danger and induced a release of adrenaline in your body. Even today, when brake lights come on in front of you on the road, even if there is clearly no impending danger, you might still feel an adrenaline response. This is an example of how our emotions and our memories are intimately related. Where does this occur in the cerebrum?

Explanation / Answer

Nervous System (CNS)

1. ANS: The forebrain (proencephalon) is the largest part of the brain, most of which is cerebrum.

The human brain is hugely interconnected but three major components can be identified: the cerebrum, the cerebellum and the brain stem. So the other 20% of the brain is cerebellum and the brain stem.

The corpus callosum allows the right and left hemispheres of the cerebral hemispheres to communicate with one another.

2. ANS:

Gray areas of brain and spinal cord made up primarily of cell bodies and dendrites of nerve cells rather than myelinated axons. White matter or substance is the tissue composed primarily of myelinated, or medullated, fibers.

The glial cells surround neurons and provide support for and insulation between them. Glial cells are the most abundant cell types in the central nervous system.

3. ANS:

The occipital lobe is located in the rear of the head and is an important region controlling sight, reading, and visual images.

Partial lobe of the cerebrum receives afferent information from the integument.

The cerebellum plays an important role in balance, motor control, but is also involved in some cognitive functions such as attention, language, emotional functions (such as regulating fear and pleasure responses) and in the processing of procedural memories.

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