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Structure And Function Of Brain And Spinal Cord Pdf

structure and function of brain and spinal cord pdf

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The central nervous system consists of the brain and spinal cord.

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The brainstem or brain stem is the posterior stalk-like part of the brain that connects the cerebrum with the spinal cord. The midbrain is continuous with the thalamus of the diencephalon through the tentorial notch , [2] : and sometimes the diencephalon is included in the brainstem. The brainstem is very small, making up around only 2. Ten pairs of cranial nerves come from the brainstem. The parts of the brainstem are the midbrain, the pons, and the medulla oblongata, and sometimes the diencephalon.

Broadly speaking, the nervous system is organised into two main parts, the central nervous system CNS and the peripheral nervous system PNS. The CNS is the processing centre of the body and consists of the brain and the spinal cord. Both of these are protected by three layers of membranes known as meninges. For further protection, the brain is encased within the hard bones of the skull, while the spinal cord is protected with the bony vertebrae of our backbones. A third form of protection is cerebrospinal fluid, which provides a buffer that limits impact between the brain and skull or between spinal cord and vertebrae.

The Structure and Functions of the Brain and Spinal Cord

The brain and the spinal cord are the central nervous system, and they represent the main organs of the nervous system. The spinal cord is a single structure, whereas the adult brain is described in terms of four major regions: the cerebrum, the diencephalon, the brain stem, and the cerebellum. The regulation of homeostasis is governed by a specialized region in the brain. The coordination of reflexes depends on the integration of sensory and motor pathways in the spinal cord. The iconic gray mantle of the human brain, which appears to make up most of the mass of the brain, is the cerebrum Figure The wrinkled portion is the cerebral cortex , and the rest of the structure is beneath that outer covering. There is a large separation between the two sides of the cerebrum called the longitudinal fissure.

structure and function of brain and spinal cord pdf

Anatomy of the Brain Link to PDF The central nervous system (CNS) is composed of the brain and spinal cord. one gyrus to another, from one lobe to another, from one side of the brain to the other, and to structures deep in the brain (Fig.


What Are Neurons?

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