The nervous system is divided into two parts the central nervous system and the peripheral nervous system. The nervous system is essential for our survival, because it sends messages to and from the brain.
Function of the Nervous System: The nervous system is critical for everything we do. You would not be able to breathe, walk, sleep, or live without the nervous system, because it controls everything we do. The nervous system responds to the body's environment, and sends messages in response. Whenever your body is being hurt (ex. hand near a flame) a message is sent to the brain due to this external stimuli. In response a message is sent back to the hand telling you to move. The nervous system consists of the brain, our spinal cord, and our nerves. Nerves are present throughout our body and help the body feel pain, temperature, and pressure. Our nerves receive messages, and send them to the brain.
Function of the Nervous System: The nervous system is critical for everything we do. You would not be able to breathe, walk, sleep, or live without the nervous system, because it controls everything we do. The nervous system responds to the body's environment, and sends messages in response. Whenever your body is being hurt (ex. hand near a flame) a message is sent to the brain due to this external stimuli. In response a message is sent back to the hand telling you to move. The nervous system consists of the brain, our spinal cord, and our nerves. Nerves are present throughout our body and help the body feel pain, temperature, and pressure. Our nerves receive messages, and send them to the brain.
The Cerebrum: This is the largest part of the brain, and is connected with higher levels of brain function. The cerebrum is divided into four sections. These sections are the frontal lobe, the parietal lobe, the occipital lobe, and the temporal lobe.
Frontal Lobe: This part of the brain is associated with reasoning, and planning. It is said that the frontal lobe isn't fully developed until the mid-twenties, which is why teenagers are so prone to poor decision making.
Parietal Lobe: This part of the brain is connected to the perception of stimuli regarding touch, pressure, temperature, and pain.
Occipital Lobe: This part of the brain is the center for our visual perception system.
Temporal Lobe: This part of the brain is connected to the perception and recognition of auditory stimuli (this means hearing) and also regarding memory.
Cerebellum: This part of the brain helps manage balance and motor movement.
Brain Stem: This part of the brain is vital for basic life functions such as breathing, heartbeat, and blood pressure.
Frontal Lobe: This part of the brain is associated with reasoning, and planning. It is said that the frontal lobe isn't fully developed until the mid-twenties, which is why teenagers are so prone to poor decision making.
Parietal Lobe: This part of the brain is connected to the perception of stimuli regarding touch, pressure, temperature, and pain.
Occipital Lobe: This part of the brain is the center for our visual perception system.
Temporal Lobe: This part of the brain is connected to the perception and recognition of auditory stimuli (this means hearing) and also regarding memory.
Cerebellum: This part of the brain helps manage balance and motor movement.
Brain Stem: This part of the brain is vital for basic life functions such as breathing, heartbeat, and blood pressure.
Central Nervous System:
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Peripheral Nervous System:
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Types of Neurons:
Sensory Neuron: Connected from the stimulus receptors ( touch, odor, taste, sound, vision) to the central nervous system, the brain, and the spinal cord. These neurons are located in clusters, and have axons extending in both directions.
Interneurons: These neurons are only found within the brain and spinal cord. They become stimulated when receiving signals from sensory neurons, or interneurons.
Motor Neurons: These send impulses from the nervous system to the muscles and glands who in the end carry out the response.
Pyramidal Cell: These are found in certain parts of the brain (hippocampus). They have a distinct shape, and two branches of dendrites.
Sensory Neuron: Connected from the stimulus receptors ( touch, odor, taste, sound, vision) to the central nervous system, the brain, and the spinal cord. These neurons are located in clusters, and have axons extending in both directions.
Interneurons: These neurons are only found within the brain and spinal cord. They become stimulated when receiving signals from sensory neurons, or interneurons.
Motor Neurons: These send impulses from the nervous system to the muscles and glands who in the end carry out the response.
Pyramidal Cell: These are found in certain parts of the brain (hippocampus). They have a distinct shape, and two branches of dendrites.
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