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Nervous System

QuestionAnswer
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.
What nervous system do they make up? Central Nervous System.
Myelin allows axons to transport messages faster or slower? Faster
What is the function of dendrites? Dendrites detect and receive neural information from other neurons and transmits info to soma.
What is the function of the CNS? Carries messages to and from the CNS
What is the function of the PNS? Carries messages to and from the PNS.
What is the function of the Autonomic system? Connects CNS to internal organs and glands, slef-regulating.
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.
Describe the structure and function of sensory neuron? Sensory neurons carry the information on afferent pathways from the PNS to the CNS.
Describe the structure and function of motor neuron? Motor neurons carry motor messages from the CNS to the PNS on efferent pathways.
Describe the structure and function of Interneuron? Interneurons in the spinal cord allow the sensory and motor messages to communicate by integrating the information.
The four lobes of the brain are?: Frontal Lobe, Parietal Lobe, Occipital lobe, Temporal Lobe.
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).
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.
What sort of neurons initiate a spinal reflex? Interneurons.
The gap between two neurons is called a: Synaptic gap
Why do we have reflexes? We have reflexes to prevent injury to ourselves. Generally using them as a survival mechanism.
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.
A neurotransmitter has its effect when it binds to: The receptor sites
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.
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.
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.
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.
What is a spinal reflex? Spinal Reflex is an involuntary response and we do it without thinking.
Created by: sharna.powell
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