Complete Human Nervous System 🧠

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In this comprehensive video, we delve into the intricate world of the human nervous system. Join us on an enlightening journey as we explore the anatomy, structure, and functions of this remarkable network. From the brain to the spinal cord, from neurons to synapses, we uncover the essential components that make up this complex system. Discover how the central nervous system and peripheral nervous system work in harmony to regulate sensory perception, motor control, and even autonomic functions. Gain insights into the role of neurotransmitters and learn about common nervous system disorders. Whether you're a student, a health enthusiast, or simply curious about how our bodies function, this video will provide you with a comprehensive understanding of the complete human nervous system.

In biology, the nervous system is the highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body. The nervous system detects environmental changes that impact the body, then works in tandem with the endocrine system to respond to such events.[1] Nervous tissue first arose in wormlike organisms about 550 to 600 million years ago. In vertebrates, it consists of two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord. The PNS consists mainly of nerves, which are enclosed bundles of the long fibers, or axons, that connect the CNS to every other part of the body. Nerves that transmit signals from the brain are called motor nerves or efferent nerves, while those nerves that transmit information from the body to the CNS are called sensory nerves or afferent. Spinal nerves are mixed nerves that serve both functions. The PNS is divided into three separate subsystems, the somatic, autonomic, and enteric nervous systems. Somatic nerves mediate voluntary movement. The autonomic nervous system is further subdivided into the sympathetic and the parasympathetic nervous systems. The sympathetic nervous system is activated in cases of emergencies to mobilize energy, while the parasympathetic nervous system is activated when organisms are in a relaxed state. The enteric nervous system functions to control the gastrointestinal system. Both autonomic and enteric nervous systems function involuntarily. Nerves that exit from the cranium are called cranial nerves while those exiting from the spinal cord are called spinal nerves.
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