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The nervous system

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Alden Ceasar Pilongo
Alden Ceasar Pilongo

The nervous system is made up of the central nervous system (brain and spinal cord) and peripheral nervous system. It functions to transmit signals between different parts of the body via neurons. The brain is the main organ of the nervous system and is divided into four principal parts - the brain stem, cerebrum, cerebellum and diencephalon. The brain stem controls basic functions, the cerebrum controls sensory perception and voluntary movement, the cerebellum coordinates movement, and the diencephalon gives rise to posterior forebrain structures.

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By Alden Ceasar Pilongo
 Is a complex network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body. Function  The function of the nervous system is to send signals from one cell to others, or from one part of the body to others.
 The nervous system includes both the Central nervous system and Peripheral nervous system. The Central nervous system is made up of the brain and spinal cord and The Peripheral nervous system is made up of the Somatic and the Autonomic nervous systems. The Main Parts  Brain  Spinal Cord  Neuron
 the function of the brain is to provide coherent control over the actions of a human or animal  the brain weighs approximately 1.3 to 1.4 kg  The brain consists of four principal parts:  the brain stem  the cerebrum  the cerebellum  the diencephalon
 This is also known as the Medulla Oblongata  The medulla oblongata controls autonomic functions, and connects the higher levels of the brain to the spinal cord. It is also responsible for regulating several basic functions of the autonomic nervous system which include respiration, cardiac center, vasomotor center and reflex centers of vomiting, coughing, sneezing, and swallowing.  Any nerve fibers that are sent to the rest of the body from the brain must move through the brain stem.
 The cerebrum forms the bulk of the brain and is supported on the brain stem. The cerebrum is divided into two hemispheres. Each hemisphere controls the activities of the side of the body opposite that hemisphere.  It functions as the center of sensory perception, memory, thoughts and judgment; also functions as the center of voluntary motor activity.
 Frontal lobe- The executive functions of the frontal lobes involve the ability to recognize future consequences resulting from current actions, to choose between good and bad actions (or better and best), override and suppress socially unacceptable responses, and determine similarities and differences between things or events.  Parietal lobe- The parietal lobe plays important roles in integrating sensory information from various parts of the body, knowledge of numbers and their relations, and in the manipulation of objects.  Occipital lobe- Occipital lobe function includes processing of vision and color recognition.  Temporal lobe- The temporal lobes play an important role in organizing sensory input, auditory perception, language and speech production, as well as memory association and formation.
 The cerebellum is a rounded structure located behind the brain stem, to which it is linked by thick nerve tracts.  It is concerned mainly with the maintenance of posture and balance and the coordination of movement.
 The diencephalon is also known as the fore brain stem.  It gives rise to posterior forebrain structures including the thalamus, hypothalamus, posterior portion of the pituitary gland, and pineal gland.
 The spinal cord consists of thirty-one pairs of spinal nerves. They are all mixed nerves, and they provide a two-way communication system between the spinal cord and parts of the arms, legs, neck and trunk of the body.  The spinal cord has three major functions: as a conduit for motor information, which travels down the spinal cord, as a conduit for sensory information in the reverse direction, and finally as a center for coordinating certain reflexes.
 A neuron is an electrically excitable cell that processes and transmits information through electrical and chemical signals.  Neurons are the core components of the nervous system  A number of specialized types of neurons exist: sensory neurons respond to touch, sound, light and numerous other stimuli affecting cells of the sensory organs that then send signals to the spinal cord and brain. Motor neurons receive signals from the brain and spinal cord, cause muscle contractions, and affect glands.
Dendrites Axon terminal Node of Cell Body Ranvier Schwaan Cell Myelin Sheath Nucleus

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The nervous system

  • 1. By Alden Ceasar Pilongo
  • 2. Is a complex network of nerves and cells that carry messages to and from the brain and spinal cord to various parts of the body. Function  The function of the nervous system is to send signals from one cell to others, or from one part of the body to others.
  • 3. The nervous system includes both the Central nervous system and Peripheral nervous system. The Central nervous system is made up of the brain and spinal cord and The Peripheral nervous system is made up of the Somatic and the Autonomic nervous systems. The Main Parts  Brain  Spinal Cord  Neuron
  • 4. the function of the brain is to provide coherent control over the actions of a human or animal  the brain weighs approximately 1.3 to 1.4 kg  The brain consists of four principal parts:  the brain stem  the cerebrum  the cerebellum  the diencephalon
  • 5. This is also known as the Medulla Oblongata  The medulla oblongata controls autonomic functions, and connects the higher levels of the brain to the spinal cord. It is also responsible for regulating several basic functions of the autonomic nervous system which include respiration, cardiac center, vasomotor center and reflex centers of vomiting, coughing, sneezing, and swallowing.  Any nerve fibers that are sent to the rest of the body from the brain must move through the brain stem.
  • 6. The cerebrum forms the bulk of the brain and is supported on the brain stem. The cerebrum is divided into two hemispheres. Each hemisphere controls the activities of the side of the body opposite that hemisphere.  It functions as the center of sensory perception, memory, thoughts and judgment; also functions as the center of voluntary motor activity.
  • 7. Frontal lobe- The executive functions of the frontal lobes involve the ability to recognize future consequences resulting from current actions, to choose between good and bad actions (or better and best), override and suppress socially unacceptable responses, and determine similarities and differences between things or events.  Parietal lobe- The parietal lobe plays important roles in integrating sensory information from various parts of the body, knowledge of numbers and their relations, and in the manipulation of objects.  Occipital lobe- Occipital lobe function includes processing of vision and color recognition.  Temporal lobe- The temporal lobes play an important role in organizing sensory input, auditory perception, language and speech production, as well as memory association and formation.
  • 8. The cerebellum is a rounded structure located behind the brain stem, to which it is linked by thick nerve tracts.  It is concerned mainly with the maintenance of posture and balance and the coordination of movement.
  • 9. The diencephalon is also known as the fore brain stem.  It gives rise to posterior forebrain structures including the thalamus, hypothalamus, posterior portion of the pituitary gland, and pineal gland.
  • 10. The spinal cord consists of thirty-one pairs of spinal nerves. They are all mixed nerves, and they provide a two-way communication system between the spinal cord and parts of the arms, legs, neck and trunk of the body.  The spinal cord has three major functions: as a conduit for motor information, which travels down the spinal cord, as a conduit for sensory information in the reverse direction, and finally as a center for coordinating certain reflexes.
  • 11. A neuron is an electrically excitable cell that processes and transmits information through electrical and chemical signals.  Neurons are the core components of the nervous system  A number of specialized types of neurons exist: sensory neurons respond to touch, sound, light and numerous other stimuli affecting cells of the sensory organs that then send signals to the spinal cord and brain. Motor neurons receive signals from the brain and spinal cord, cause muscle contractions, and affect glands.
  • 12. Dendrites Axon terminal Node of Cell Body Ranvier Schwaan Cell Myelin Sheath Nucleus