Nervous System
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| What is the role of the Brain and Spinal Cord? | The brain is responsible for virtually everything we think, feel and do. The Spinal cord connects the brain and PNS system, initiating spinal reflexes.
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| What nervous system do they make up? | Central Nervous System.
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| Myelin allows axons to transport messages faster or slower? | Faster
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| What is the function of dendrites? | Dendrites detect and receive neural information from other neurons and transmits info to soma.
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| What is the function of the CNS? | Carries messages to and from the CNS
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| What is the function of the PNS? | Carries messages to and from the PNS.
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| What is the function of the Autonomic system? | Connects CNS to internal organs and glands, slef-regulating.
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| What is the function of the Somatic Nervous system? | Carries messages from receptors in the body to the CNS, and motor messages from the CNS to skeletal muscles.
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| Describe the structure and function of sensory neuron? | Sensory neurons carry the information on afferent pathways from the PNS to the CNS.
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| Describe the structure and function of motor neuron? | Motor neurons carry motor messages from the CNS to the PNS on efferent pathways.
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| Describe the structure and function of Interneuron? | Interneurons in the spinal cord allow the sensory and motor messages to communicate by integrating the information.
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| The four lobes of the brain are?: | Frontal Lobe,
Parietal Lobe,
Occipital lobe,
Temporal Lobe.
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| What are their main functions of Frontal and Parietal Lobe: | Frontal: Planning, Initiative, personality , behaviour, impulse control, problem solving.
Parietal: Spatial Awareness, perception, sensation (5 SENSES).
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| What are their main functions of Occipital and Temporal Lobe: | Occipital: Processes visual information from both eyes.
Temporal: Hearing from both ears, facial recognition, tempo and perception of sound.
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| What sort of neurons initiate a spinal reflex? | Interneurons.
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| The gap between two neurons is called a: | Synaptic gap
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| Why do we have reflexes? | We have reflexes to prevent injury to ourselves. Generally using them as a survival mechanism.
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| What is a neurotransmitter? | chemical substances produced by a neuron that carry a message to other neurons or cells in muscles, organ or other tissue.
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| A neurotransmitter has its effect when it binds to: | The receptor sites
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| 18. Explain the lock and key process, using all important key terms. | Each neurotransmitter acts as a key, which has a chemically distinct shape. Receptor sites on the dendrites of the post-synaptic neuron (lock) have complementary shapes that can be affected by specific neurotransmitters.
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| What is the effect of GABA and Glutamate? | GABA - GABA has an inhibitory effect. This decreases the likelihood of the message firing.
Glutamate - glutamate has an excitatory effect. This increases the likelihood of the message firing.
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| Explain the LTP and how it occurs. | LTP - Long- Term potentiation is when some pathways are used over an dover again. This makes messages more efficient.
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| Explain the LTD and how it occurs. | LTD - Long-Term depression is when pathways are not used.This is the weakening of the pathway and make the message less efficient.
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| What is a spinal reflex? | Spinal Reflex is an involuntary response and we do it without thinking.
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